The Biota of the Gordon Natural Area - Lichens

Lichen research at the Gordon can be described as being in its infancy. To date, no faculty members or students have undertaken any lichen research. Hence, the only GNA lichen data come from observations from GNA staff. As with the bryophytes and fungi, there are numerous photos of unidentified lichens awaiting determination.

To date, 49 species of lichens, in 35 genera, 20 families, and 10 orders have been noted at the GNA. This number of species only represents a very small portion of the lichens present at the GNA. As we continue working with this group, we hope to amplify the current species list significantly.

You can explore the lichen checklist below, or you can access a pdf copy of the checklist.

Hypotrachyna livida (Lead Lichen)

Group: Lichens

Family: Parmeliaceae

Notes

Common Names: Lead Lichen; Wrinkled Loop Lichen; Clingy Square Britches

Year Noted: 2021

Identified By: James Lendemer (iNaturalist)

First Noted By: Nur Ritter

iNaturalist Observations:

102723609 (Observed: 12/7/2021)

Images

Lead Lichen (Hypotrachyna livida): Habit
Lead Lichen (Hypotrachyna livida): Close-up of thallus showing the abundant pycnidia
Lead Lichen (Hypotrachyna livida): Close-up of the edge of the thallus
Lead Lichen (Hypotrachyna livida): Close-up of the edge of the thallus

Myelochroa galbina (Smooth Axil-bristle Lichen)

Group: Lichens

Family: Parmeliaceae

Notes

Common Name: Smooth Axil-bristle Lichen

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

200811510 (Observed: 2/2/2024)

Parmotrema Indet 2 (Ruffle Lichen)

Group: Lichens

Family: Parmeliaceae

Notes

Common Name: Ruffle Lichen

Identified By: Nur Ritter

First Noted By: Noah Long

iNaturalist Observations:

38341405 (Observed: 2/2/2020)

Images

Ruffle Lichen (Parmotrema): Habit
Ruffle Lichen (Parmotrema): Close-up of black underside of lobe
Ruffle Lichen (Parmotrema): Close-up of long

Arthoniaceae Indet 1 (Crustose Lichen)

Group: Lichens

Type: Crustose

Notes

Common Name: Crustose Lichen

Year Noted: 2020

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

70038023 (Observed: 8/17/2020)

Images

Crustose Lichen (Arthoniaceae)
Crustose Lichen (Arthoniaceae)
Crustose Lichen (Arthoniaceae)
Crustose Lichen (Arthoniaceae)
Crustose Lichen (Arthoniaceae)

Pertusariales Indet 1 (Crustose, Corticolous Lichen)

Group: Lichens

Type: Crustose

Notes

Common Name: Crustose, Corticolous Lichen

Year Noted: 2020

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

71301639 (Observed: 3/12/2020)

Images

Crustose
Crustose
Crustose
Crustose
Crustose

Micarea peliocarpa (Shadow Dot Lichen)

Group: Lichens

Type: Crustose

Family: Byssolomataceae

Notes

Common Name: Shadow Dot Lichen

Year Noted: 2020

Identified and First Noted By: Nur Ritter

Comments:
Noted growing on a rock in a shaded, 'moist' area (i.e., about 10' upslope from a stream).

iNaturalist Observations:

103099461 (Observed: 4/9/2020)

Images

Shadow Dot Lichen (Micarea peliocarpa)
Shadow Dot Lichen (Micarea peliocarpa)
Shadow Dot Lichen (Micarea peliocarpa)
Shadow Dot Lichen (Micarea peliocarpa)
Shadow Dot Lichen (Micarea peliocarpa)
Shadow Dot Lichen (Micarea peliocarpa)

Buellia Indet 1 (Button Lichens)

Group: Lichens

Type: Crustose

Family: Caliciaceae

Notes

Common Name: Button Lichens

Year Noted: 2021

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

88175930 (Observed: 7/22/2021)

Images

Button Lichens (Buellia): Habit
Button Lichens (Buellia)
Button Lichens (Buellia): Close-up of apothecia

Pyxine Indet 1 (Pyxine Lichens)

Group: Lichens

Type: Crustose

Family: Caliciaceae

Notes

Common Name: Pyxine Lichens

Year Noted: 2019

Identified By: C.J. Pasiche Lisboa (iNaturalist)

First Noted By: Nur Ritter

iNaturalist Observations:

70586979 (Observed: 12/2/2019)

Images

Pyxine Lichens (Pyxine)
Pyxine Lichens (Pyxine): lichen thallus one year later
Pyxine Lichens (Pyxine): lichen thallus one year later photographed under UV light
Pyxine Lichens (Pyxine)
Pyxine Lichens (Pyxine)
Pyxine Lichens (Pyxine): close-up of isidia

Candelariella efflorescens (Powdery Gold Speck Lichen)

Group: Lichens

Type: Crustose

Family: Candelariaceae

Notes

Common Names: Powdery Gold Speck Lichen; Yellow Powder

Years Noted: 2019; 2021; 2022; 2023; 2024

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

102183172 (Observed: 11/29/2021)

36750841 (Observed: 12/18/2019)

Images

Powdery Gold Speck Lichen (Candelariella efflorescens)
Powdery Gold Speck Lichen (Candelariella efflorescens)
Powdery Gold Speck Lichen (Candelariella efflorescens)

Candelariella vitellina (Common Goldspeck Lichen)

Group: Lichens

Type: Crustose

Family: Candelariaceae

Notes

Common Names: Common Goldspeck Lichen; Common Yolk Lichen

Synonyms: Candelaria vitellina

Years Noted: 2021; 2022; 2023; 2024

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

200652592 (Observed: 2/27/2024)

149431444 (Observed: 2/22/2023)

70341304 (Observed: 2/28/2021)

Images

Common Yolk Lichen (Candelariella vitellina)
Common Yolk Lichen (Candelariella vitellina)
Common Yolk Lichen (Candelariella vitellina)
Common Yolk Lichen (Candelariella vitellina)
Common Yolk Lichen (Candelariella vitellina)
Common Yolk Lichen (Candelariella vitellina)
Common Yolk Lichen (Candelariella vitellina)

Chrysothrix caesia (Frosted Comma Lichen)

Group: Lichens

Type: Crustose

Family: Chrysotrichaceae

Notes

Common Name: Frosted Comma Lichen

Synonyms: Arthonia caesia

Years Noted: 2020; 2021; 2022; 2023; 2024

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

158608984 (Observed: 4/26/2023)

107767333 (Observed: 3/1/2022)

40237917 (Observed: 3/18/2020)

103099069 (Observed: 12/14/2021)

Images

Frosted Comma Lichen (Chrysothrix caesia): Habit
Frosted Comma Lichen (Chrysothrix caesia): Close-up showing the dense pruina on the apothecia (i.e.

Pycnothelia papillaria (Nipple Lichen)

Group: Lichens

Type: Crustose

Family: Cladoniaceae

Notes

Common Name: Nipple Lichen

Year Noted: 2019

Identified By: Nur Ritter

First Noted By: Nur Ritter & Maribeth Beatty

Comments:
Thus far, a single occurrence noted at the Gordon.

Images

Nipple Lichen (Pycnothelia papillaria)
Nipple Lichen (Pycnothelia papillaria)
Nipple Lichen (Pycnothelia papillaria)
Nipple Lichen (Pycnothelia papillaria)
Nipple Lichen (Pycnothelia papillaria)

cf Coenogonium pineti (Pink Dimple Lichen)

Group: Lichens

Type: Crustose

Family: Coenogoniaceae

Notes

Common Names: Pink Dimple Lichen; Lesser Candydish

Year Noted: 2022

Identified By: J. Jensen (FB Lichen Identification Group)

First Noted By: Nur Ritter

iNaturalist Observations:

107413917 (Observed: 2/21/2022)

Images

Pink Dimple Lichen (Coenogonium pineti): Habit
Pink Dimple Lichen (Coenogonium pineti): Close-up of the apothecia

Graphis scripta Complex (Common Script Lichen)

Group: Lichens

Type: Crustose

Family: Graphidaceae

Notes

Common Name: Common Script Lichen

Years Noted: 2020; 2021; 2022; 2023; 2024

Identified and First Noted By: Nur Ritter

Comments:
To date, a single 'occurrence' noted: growing on a large, fallen Northern Red Oak (Quercus rubra).

iNaturalist Observations:

70250519 (Observed: 2/26/2021)

46418403 (Observed: 5/18/2020)

Images

Common Script Lichen (Graphis scripta)
Common Script Lichen (Graphis scripta)
Common Script Lichen (Graphis scripta)
Common Script Lichen (Graphis scripta)
Common Script Lichen (Graphis scripta)
Common Script Lichen (Graphis scripta)
Common Script Lichen (Graphis scripta)

Thelotrema Indet 1 (Barnacle Lichens)

Group: Lichens

Type: Crustose

Family: Graphidaceae

Notes

Common Name: Barnacle Lichens

Year Noted: 2022

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

108599099 (Observed: 3/14/2022)

Lecanora cf thysanophora (Fringed Stud Lichen)

Group: Lichens

Type: Crustose

Family: Lecanoraceae

Notes

Common Names: Fringed Stud Lichen; Mapledust Lichen

Years Noted: 2020; 2021

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

70351897 (Observed: 2/28/2021)

50918726 (Observed: 6/25/2020)

Images

Fringed Stud Lichen (Lecanora thysanophora)
Fringed Stud Lichen (Lecanora thysanophora)
Fringed Stud Lichen (Lecanora thysanophora)
Fringed Stud Lichen (Lecanora thysanophora)
Fringed Stud Lichen (Lecanora thysanophora)
Fringed Stud Lichen (Lecanora thysanophora)

Lecanora cinereofusca (Beaded Rim-lichen)

Group: Lichens

Type: Crustose

Family: Lecanoraceae

Notes

Common Names: Beaded Rim-lichen; Ashen Stud Lichen

Year Noted: 2021

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

103433320 (Observed: 12/21/2021)

Images

Beaded Rim-lichen (Lecanora cinereofusca): Habit
Beaded Rim-lichen (Lecanora cinereofusca): Habit
Beaded Rim-lichen (Lecanora cinereofusca): Close-up of apothecia
Beaded Rim-lichen (Lecanora cinereofusca): Close-up of apothecia

Lecanora hybocarpa (Bumpy-rim Lichen)

Group: Lichens

Type: Crustose

Family: Lecanoraceae

Notes

Common Names: Bumpy-rim Lichen; Under-fruited Lichen

Years Noted: 2019; 2021; 2022; 2023

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

148691962 (Observed: 2/1/2023)

107768176 (Observed: 3/1/2022)

70262335 (Observed: 2/26/2021)

69525803 (Observed: 12/6/2019)

Images

Under-fruited Lichen (Lecanora hybocarpa)
Under-fruited Lichen (Lecanora hybocarpa)
Under-fruited Lichen (Lecanora hybocarpa)
Under-fruited Lichen (Lecanora hybocarpa)
Under-fruited Lichen (Lecanora hybocarpa)

Lecanora Indet 2 (Rim Lichen)

Group: Lichens

Type: Crustose

Family: Lecanoraceae

Notes

Common Name: Rim Lichen

Year Noted: 2020

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

52529110 (Observed: 7/9/2020)

Images

Rim Lichen (Lecanora Indet. #1)
Rim Lichen (Lecanora Indet. #1)
Rim Lichen (Lecanora Indet. #1)
Rim Lichen (Lecanora Indet. #1)

Lecanora strobilina (Mealy Rim-lichen)

Group: Lichens

Type: Crustose

Family: Lecanoraceae

Notes

Common Name: Mealy Rim-lichen

Years Noted: 2019; 2021; 2023; 2024

Identified By: C.J. Pasiche Lisboa (iNaturalist)

First Noted By: Nur Ritter

iNaturalist Observations:

198233079 (Observed: 2/2/2024)

148711612 (Observed: 2/13/2023)

102871224 (Observed: 12/7/2021)

70354737 (Observed: 2/28/2021)

70256135 (Observed: 2/26/2021)

36346268 (Observed: 12/2/2019)

Images

Mealy Rim-lichen (Lecanora strobilina)
Mealy Rim-lichen (Lecanora strobilina)
Mealy Rim-lichen (Lecanora strobilina)
Mealy Rim-lichen (Lecanora strobilina)
Mealy Rim-lichen (Lecanora strobilina)

Lecanoraceae Indet 1 (Rim-lichen)

Group: Lichens

Type: Crustose

Family: Lecanoraceae

Notes

Common Name: Rim-lichen

Year Noted: 2020

Identified and First Noted By: Nur Ritter

Comments:
At this point, only a single occurrence noted. Growing on a small, fallen branch.

iNaturalist Observations:

39553669 (Observed: 3/4/2020)

Images

Rim-lichen (Lecanoraceae)
Rim-lichen (Lecanoraceae)
Rim-lichen (Lecanoraceae)
Rim-lichen (Lecanoraceae): close-up of apothecia
Rim-lichen (Lecanoraceae): close-up of apothecia

Lecidella cf euphorea (Bark Disc Lichen)

Group: Lichens

Type: Crustose

Family: Lecanoraceae

Notes

Common Name: Bark Disc Lichen

Year Noted: 2020

Identified and First Noted By: Nur Ritter

Comments:
At this point, only a single occurrence noted. Growing on a small, fallen branch.

iNaturalist Observations:

39553361 (Observed: 3/4/2020)

Images

Bark Disc Lichen (Lecidella euphorea)
Bark Disc Lichen (Lecidella euphorea)
Bark Disc Lichen (Lecidella euphorea)
Bark Disc Lichen (Lecidella euphorea)
Bark Disc Lichen (Lecidella euphorea)
Bark Disc Lichen (Lecidella euphorea)
Bark Disc Lichen (Lecidella euphorea)

Polyozosia hagenii (Hagens Rim-lichen)

Group: Lichens

Type: Crustose

Family: Lecanoraceae

Notes

Common Name: Hagen's Rim-lichen

Synonyms: Lecanora hagenii; Myriolecis hagenii

Year Noted: 2021

Identified and First Noted By: Nur Ritter

Images

Hagen's Rim-lichen (Polyozosia hagenii): under rainy conditions
Hagen's Rim-lichen (Polyozosia hagenii): under rainy conditions
Hagen's Rim-lichen (Polyozosia hagenii): under rainy conditions
Hagen's Rim-lichen (Polyozosia hagenii)
Hagen's Rim-lichen (Polyozosia hagenii)
Hagen's Rim-lichen (Polyozosia hagenii)
Hagen's Rim-lichen (Polyozosia hagenii)

Porpidia albocaerulescens (Smokey-eye Boulder Lichen)

Group: Lichens

Type: Crustose

Family: Lecideaceae

Notes

Common Name: Smokey-eye Boulder Lichen

Years Noted: 2019; 2020; 2021; 2022; 2023; 2024

Identified By: C.J. Pasiche Lisboa (iNaturalist)

First Noted By: Nur Ritter

Comments:
The most frequently encountered and abundant saxicolous lichen (i.e. one that grows on rock) in the Gordon. Habitat: on boulders and rocks (as would be expected) throughout the Gordon.

iNaturalist Observations:

146847074 (Observed: 1/18/2023)

106389699 (Observed: 2/8/2022)

93391724 (Observed: 9/2/2021)

73239597 (Observed: 4/6/2021)

77680081 (Observed: 5/6/2021)

70630511 (Observed: 3/3/2021)

70630029 (Observed: 3/3/2021)

70254484 (Observed: 2/26/2021)

67721320 (Observed: 1/7/2021)

41029030 (Observed: 3/29/2020)

37884642 (Observed: 2/15/2019)

37885224 (Observed: 11/5/2019)

Images

Smokey-eye Boulder Lichen (Porpidia albocaerulescens)
Smokey-eye Boulder Lichen (Porpidia albocaerulescens)
Smokey-eye Boulder Lichen (Porpidia albocaerulescens)

Aspicilia cf cinerea (Cinder Lichen)

Group: Lichens

Type: Crustose

Family: Megasporaceae

Notes

Common Names: Cinder Lichen; Ashen Stud Lichens

Year Noted: 2019

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

38905196 (Observed: 11/4/2019)

Images

Cinder Lichen (Aspicilia cinerea)
Cinder Lichen (Aspicilia cinerea)
Cinder Lichen (Aspicilia cinerea)
Cinder Lichen (Aspicilia cinerea)
Cinder Lichen (Aspicilia cinerea)

Aspicilia Indet 1 (Sunken Disk Lichen)

Group: Lichens

Type: Crustose

Family: Megasporaceae

Notes

Common Name: Sunken Disk Lichen

Year Noted: 2020

Identified By: C.J. Pasiche Lisboa (iNaturalist)

First Noted By: Nur Ritter

Comments:
Saxicolous (i.e., growing on stone), crustose lichen.

iNaturalist Observations:

40239121 (Observed: 3/18/2020)

Images

Sunken Disk Lichen (Aspicilia)
Sunken Disk Lichen (Aspicilia)
Sunken Disk Lichen (Aspicilia)
Sunken Disk Lichen (Aspicilia)
Sunken Disk Lichen (Aspicilia)

Aspicilia Indet 2 (Sunken Disk Lichen)

Group: Lichens

Type: Crustose

Family: Megasporaceae

Notes

Common Name: Sunken Disk Lichen

Year Noted: 2020

Identified and First Noted By: Nur Ritter

Comments:
Saxicolous (i.e., growing on stone), crustose lichen.

iNaturalist Observations:

70413658 (Observed: 3/18/2020)

Images

Sunken Disk Lichen (Aspicilia)
Sunken Disk Lichen (Aspicilia)
Sunken Disk Lichen (Aspicilia)
Sunken Disk Lichen (Aspicilia)
Sunken Disk Lichen (Aspicilia)

Ochrolechia Indet 1 (Crabseye Lichens)

Group: Lichens

Type: Crustose

Family: Ochrolechiaceae

Notes

Common Name: Crabseye Lichens

Year Noted: 2022

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

144685332 (Observed: 12/19/2022)

Opegrapha Indet 1 (Scribble Lichen)

Group: Lichens

Type: Crustose

Family: Opegraphaceae

Notes

Common Name: Scribble Lichen

Years Noted: 2021; 2022; 2023; 2024

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

85396679 (Observed: 7/2/2021)

Lepra pustulata (Pustule Crust Lichen)

Group: Lichens

Type: Crustose

Family: Pertusariaceae

Notes

Common Name: Pustule Crust Lichen

Synonyms: Haematomma pustulatum

Years Noted: 2020; 2021

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

69467088 (Observed: 5/21/2020)

70812280 (Observed: 2/28/2021)

Images

Pustule Crust Lichen (Lepra pustulata)
Pustule Crust Lichen (Lepra pustulata)
Pustule Crust Lichen (Lepra pustulata)

Pertusaria Indet 1 (Pore Lichens)

Group: Lichens

Type: Crustose

Family: Pertusariaceae

Notes

Common Name: Pore Lichens

Year Noted: 2020

Identified and First Noted By: Nur Ritter

Comments:
Growing on the trunk of a Northern Red Oak (Quercus rubra).

iNaturalist Observations:

38904682 (Observed: 1/14/2020)

Images

Pore Lichens (Pertusaria)
Pore Lichens (Pertusaria)
Pore Lichens (Pertusaria)

Phlyctis argena (Whitewash Lichen)

Group: Lichens

Type: Crustose

Family: Phlyctidaceae

Notes

Common Name: Whitewash Lichen

Years Noted: 2020; 2021; 2023

Identified and First Noted By: Nur Ritter

Comments:
A tentative ID.

iNaturalist Observations:

52529558 (Observed: 7/9/2020)

146765167 (Observed: 1/11/2023)

70629317 (Observed: 3/3/2021)

70614418 (Observed: 3/3/2021)

70111098 (Observed: 2/24/2021)

Images

Whitewash Lichen (Phlyctis argena)
Whitewash Lichen (Phlyctis argena)
Whitewash Lichen (Phlyctis argena)
Whitewash Lichen (Phlyctis argena)

Phlyctis boliviensis (Bark Whitewash)

Group: Lichens

Type: Crustose

Family: Phlyctidaceae

Notes

Common Name: Bark Whitewash

Year Noted: 2021

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

103061993 (Observed: 12/14/2021)

Bacidia Indet 1 (Dot Lichen)

Group: Lichens

Type: Crustose

Family: Ramalinaceae

Notes

Common Name: Dot Lichen

Year Noted: 2020

Identified and First Noted By: Nur Ritter

Comments:
To date, just a single occurrence has been noted at the Gordon; however, this species is quite difficult to detect. Growing on a small rock with scattered bryophytes.

iNaturalist Observations:

38797353 (Observed: 2/18/2020)

Images

Dot Lichen (Bacidia).  Object in the upper left-hand corner is a hand lens.
Dot Lichen (Bacidia)
Dot Lichen (Bacidia)
Dot Lichen (Bacidia)
Dot Lichen (Bacidia)
Dot Lichen (Bacidia)

Lepraria Indet 2 (Dust Lichen)

Group: Lichens

Type: Crustose

Family: Stereocaulaceae

Notes

Common Name: Dust Lichen

Year Noted: 2019

Identified By: G. Perlmutter (iNaturalist)

First Noted By: Nur Ritter

Comments:
Thus far, only noted once in the Gordon. Growing in secondary forest on a small boulder.

iNaturalist Observations:

38835697 (Observed: 10/29/2019)

Images

Dust Lichen (Lepraria Indet. #2)
Dust Lichen (Lepraria Indet. #2)
Dust Lichen (Lepraria Indet. #2)
Dust Lichen (Lepraria Indet. #2)
Dust Lichen (Lepraria Indet. #2)

Polycauliona polycarpa (Pin-cushion Sunburst Lichen)

Group: Lichens

Type: Crustose

Family: Teloschistaceae

Notes

Common Name: Pin-cushion Sunburst Lichen

Year Noted: 2021

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

103161885 (Observed: 12/15/2021)

Pyxine subcinerea (Jack-o-Lantern Lichen)

Group: Lichens

Type: Foliose

Family: Caliciaceae

Notes

Common Names: Jack-o-Lantern Lichen; Mustard Lichen

Years Noted: 2021; 2022; 2023

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

148894201 (Observed: 2/15/2023)

148758302 (Observed: 2/13/2023)

106746545 (Observed: 2/11/2022)

104415291 (Observed: 1/4/2022)

102871583 (Observed: 12/7/2021)

Candelaria concolor (Lemon Lichen)

Group: Lichens

Type: Foliose

Family: Candelariaceae

Notes

Common Names: Lemon Lichen; Candle Flame Lichen

Years Noted: 2018; 2019; 2020; 2021; 2022; 2023; 2024

Identified and First Noted By: Nur Ritter

Comments:
Seemingly, one of the most common lichens at the Gordon.

iNaturalist Observations:

104343979 (Observed: 9/11/2020)

95680014 (Observed: 9/21/2021)

70617842 (Observed: 3/3/2021)

40238602 (Observed: 3/18/2020)

Images

Lemon Lichen (Candelaria concolor)
Lemon Lichen (Candelaria concolor)
Lemon Lichen (Candelaria concolor)
Lemon Lichen (Candelaria concolor)
Lemon Lichen (Candelaria concolor)

Flavoparmelia caperata (Wrinkled Shield Lichen)

Group: Lichens

Type: Foliose

Family: Parmeliaceae

Notes

Common Names: Wrinkled Shield Lichen; Common Greenshield Lichen

Years Noted: 2018; 2019; 2021; 2023

Identified and First Noted By: Nur Ritter

Comments:
Common at the Gordon.

iNaturalist Observations:

70146709 (Observed: 1/8/2021)

70084512 (Observed: 10/29/2019)

Images

Wrinkled Shield Lichen (Flavoparmelia caperata)
Wrinkled Shield Lichen (Flavoparmelia caperata): underside of thallus
Wrinkled Shield Lichen (Flavoparmelia caperata)
Wrinkled Shield Lichen (Flavoparmelia caperata)
Wrinkled Shield Lichen (Flavoparmelia caperata)
Wrinkled Shield Lichen (Flavoparmelia caperata)

Parmelia squarrosa (Squarrose Shield Lichen)

Group: Lichens

Type: Foliose

Family: Parmeliaceae

Notes

Common Names: Squarrose Shield Lichen; Bottlebrush Shield Lichen

Year Noted: 2019

Identified and First Noted By: Nur Ritter

Comments:
Seemingly, quite common at the Gordon.

Images

Squarrose Shield Lichen (Parmelia squarrosa)
Squarrose Shield Lichen (Parmelia squarrosa)
Squarrose Shield Lichen (Parmelia squarrosa)
Squarrose Shield Lichen (Parmelia squarrosa)

Parmeliaceae Indet 1 (Shield Lichens and Allies)

Group: Lichens

Type: Foliose

Family: Parmeliaceae

Notes

Common Name: Shield Lichens and Allies

Year Noted: 2019

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

104464002 (Observed: 10/25/2019)

Parmotrema cf hypotropum (Powdered Ruffle Lichen)

Group: Lichens

Type: Foliose

Family: Parmeliaceae

Notes

Common Names: Powdered Ruffle Lichen; Bleached Shield Lichen

Years Noted: 2019; 2022

Identified By: T. Walker (iNaturalist)

First Noted By: Nur Ritter

Comments:
In part, can be differentiated from other species of Parmotrema in the area by the white lower margin of the thallus lobes (Orr 2011, p. 37).

iNaturalist Observations:

104466975 (Observed: 10/25/2019)

Images

Powdered Ruffle Lichen (Parmotrema hypotropum): Habit
Powdered Ruffle Lichen (Parmotrema hypotropum): Close-up of soredia
Powdered Ruffle Lichen (Parmotrema hypotropum): Showing the blue UV+ reaction of the lobe tips

Parmotrema Indet 1 (Ruffle Lichen)

Group: Lichens

Type: Foliose

Family: Parmeliaceae

Notes

Common Name: Ruffle Lichen

Years Noted: 2019; 2020

Identified By: T. Walker (iNaturalist)

First Noted By: Nur Ritter

Also Noted By: Noah Long

iNaturalist Observations:

39213459 (Observed: 10/21/2019)

Images

Ruffle Lichen (Parmotrema Indet. #1)
Ruffle Lichen (Parmotrema Indet. #1)
Ruffle Lichen (Parmotrema Indet. #1)
Ruffle Lichen (Parmotrema Indet. #1)

Punctelia caseana (Powdered Speckled Shield Lichen)

Group: Lichens

Type: Foliose

Family: Parmeliaceae

Notes

Common Names: Powdered Speckled Shield Lichen; Moondust Speckled Lichen

Year Noted: 2022

Identified By: T. Walker (iNaturalist)

First Noted By: Nur Ritter

iNaturalist Observations:

105172200 (Observed: 1/18/2022)

Images

Powdered Speckled Shield Lichen (Punctelia caseana): Habit. Note: apothecia are from a different species of lichen.
Powdered Speckled Shield Lichen (Punctelia caseana): Close-up of whitepseudocyphellae (tiny pores) and soralia. Note: apothecia are from a different species of lichen.
Powdered Speckled Shield Lichen (Punctelia caseana). Close-up of lobe tips.
Powdered Speckled Shield Lichen (Punctelia caseana): Underside of thallus.

Punctelia rudecta (Rough Shield Lichen)

Group: Lichens

Type: Foliose

Family: Parmeliaceae

Notes

Common Name: Rough Shield Lichen

Years Noted: 2019; 2021; 2022; 2023

Identified By: T. Walker (iNaturalist)

First Noted By: Nur Ritter

iNaturalist Observations:

137737658 (Observed: 10/5/2022)

121766967 (Observed: 6/9/2022)

105981383 (Observed: 2/1/2022)

104409470 (Observed: 1/4/2022)

70841702 (Observed: 3/8/2021)

70611707 (Observed: 3/3/2021)

70084853 (Observed: 7/8/2019)

70055212 (Observed: 11/26/2019)

Images

Rough Shield Lichen (Punctelia rudecta)
Rough Shield Lichen (Punctelia rudecta)
Rough Shield Lichen (Punctelia rudecta)
Rough Shield Lichen (Punctelia rudecta)
Rough Shield Lichen (Punctelia rudecta)
Rough Shield Lichen (Punctelia rudecta): underside of thallus

Hyperphyscia syncolla (Smooth Shadow-crust Lichen)

Group: Lichens

Type: Foliose

Family: Physciaceae

Notes

Common Name: Smooth Shadow-crust Lichen

Years Noted: 2019; 2024

Identified and First Noted By: Nur Ritter

Comments:
A somewhat tentative identification. Only noted once in the Gordon: Growing on a small branch from a fallen, mature Northern Red Oak (Quercus rubra).

iNaturalist Observations:

200118653 (Observed: 2/22/2024)

36735715 (Observed: 12/17/2019)

Images

Smooth Shadow-crust Lichen (Hyperphyscia syncolla)
Smooth Shadow-crust Lichen (Hyperphyscia syncolla)
Smooth Shadow-crust Lichen (Hyperphyscia syncolla)
Smooth Shadow-crust Lichen (Hyperphyscia syncolla)
Smooth Shadow-crust Lichen (Hyperphyscia syncolla)
Smooth Shadow-crust Lichen (Hyperphyscia syncolla)

Phaeophyscia pusilloides (Tiny Blister Lichen)

Group: Lichens

Type: Foliose

Family: Physciaceae

Notes

Common Names: Tiny Blister Lichen; Pom-pom Shadow Lichen

Years Noted: 2019; 2020; 2021; 2022; 2023; 2024

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

105171215 (Observed: 1/18/2022)

103057182 (Observed: 12/14/2021)

71302316 (Observed: 3/12/2020)

37886190 (Observed: 11/4/2019)

Images

Tiny Blister Lichen (Phaeophyscia pusilloides)
Tiny Blister Lichen (Phaeophyscia pusilloides)
Tiny Blister Lichen (Phaeophyscia pusilloides)
Tiny Blister Lichen (Phaeophyscia pusilloides): underside of thallus
Tiny Blister Lichen (Phaeophyscia pusilloides)

Phaeophyscia rubropulchra (Orange-cored Shadow Lichen)

Group: Lichens

Type: Foliose

Family: Physciaceae

Notes

Common Names: Orange-cored Shadow Lichen; Orange Pith Lichen

Years Noted: 2018; 2019; 2020; 2021; 2022; 2023; 2024

Identified and First Noted By: Nur Ritter

Comments:
Quite common at the Gordon.

iNaturalist Observations:

105979807 (Observed: 2/1/2022)

104776291 (Observed: 1/11/2022)

94209623 (Observed: 9/2/2021)

70610684 (Observed: 3/3/2021)

Images

Orange-cored Shadow Lichen (Phaeophyscia rubropulchra)
Orange-cored Shadow Lichen (Phaeophyscia rubropulchra)
Orange-cored Shadow Lichen (Phaeophyscia rubropulchra)
Orange-cored Shadow Lichen (Phaeophyscia rubropulchra)

Physcia adscendens (Hooded Rosette Lichen)

Group: Lichens

Type: Foliose

Family: Physciaceae

Notes

Common Names: Hooded Rosette Lichen; Hood-fruited Lichen

Year Noted: 2021

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

70528678 (Observed: 3/3/2021)

Images

Hooded Rosette Lichen (Physcia adscendens)
Hooded Rosette Lichen (Physcia adscendens)
Hooded Rosette Lichen (Physcia adscendens)
Hooded Rosette Lichen (Physcia adscendens): underside of thallus

Physcia aipolia (Hoary Rosette Lichen)

Group: Lichens

Type: Foliose

Family: Physciaceae

Notes

Common Names: Hoary Rosette Lichen; Goat Lichen

Years Noted: 2021; 2022

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

108596943 (Observed: 3/14/2022)

102183872 (Observed: 11/29/2021)

Physcia Indet 1 (Rosette Lichens)

Group: Lichens

Type: Foliose

Family: Physciaceae

Notes

Common Name: Rosette Lichens

Year Noted: 2020

Identified and First Noted By: Nur Ritter

Comments:
Likely either Physcia aipolia or P. stellaris.

iNaturalist Observations:

38903080 (Observed: 2/18/2020)

Images

Rosette Lichens (Physcia)
Rosette Lichens (Physcia)
Rosette Lichens (Physcia)
Rosette Lichens (Physcia)
Rosette Lichens (Physcia)
Rosette Lichens (Physcia)
Rosette Lichens (Physcia): underside of thallus
Rosette Lichens (Physcia): close-up of apothecium

Physcia millegrana (Lace-tipped Lichen)

Group: Lichens

Type: Foliose

Family: Physciaceae

Notes

Common Names: Lace-tipped Lichen; Mealy Rosette Lichen

Years Noted: 2018; 2019; 2021; 2022; 2023; 2024

Identified and First Noted By: Nur Ritter

Comments:
Frequently encountered in the GNA.

Note: This species is very tolerant of air pollution.f

iNaturalist Observations:

199304090 (Observed: 2/14/2024)

100074194 (Observed: 11/1/2021)

99973595 (Observed: 10/28/2021)

40813094 (Observed: 10/21/2019)

38904116 (Observed: 1/14/2020)

Images

Lace-tipped Lichen (Physcia millegrana). Mixed collection with Candelaria concolor.
Lace-tipped Lichen (Physcia millegrana)
Lace-tipped Lichen (Physcia millegrana)
Lace-tipped Lichen (Physcia millegrana)
Lace-tipped Lichen (Physcia millegrana)
Lace-tipped Lichen (Physcia millegrana)

Physcia stellaris (Star Rosette Lichen)

Group: Lichens

Type: Foliose

Family: Physciaceae

Notes

Common Names: Star Rosette Lichen; Gray Star Lichen

Years Noted: 2020; 2021; 2024

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

87901621 (Observed: 2/26/2020)

52389321 (Observed: 4/9/2020)

102783207 (Observed: 12/7/2021)

Xanthomendoza weberi (Bare-bottomed Sunburst Lichen)

Group: Lichens

Type: Foliose

Family: Teloschistaceae

Notes

Common Name: Bare-bottomed Sunburst Lichen

Years Noted: 2018; 2023

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

185002630 (Observed: 9/25/2023)

72773171 (Observed: 4/2/2021)

Images

Bare-bottomed Sunburst Lichen (Xanthomendoza weberi): Habit
Bare-bottomed Sunburst Lichen (Xanthomendoza weberi): Showing the bright orange UV reaction
Bare-bottomed Sunburst Lichen (Xanthomendoza weberi)

Usnea strigosa (Bristly Beard Lichen)

Group: Lichens

Type: Fruticose

Family: Parmeliaceae

Notes

Common Names: Bristly Beard Lichen; Shaggy Beard Lichen

Year Noted: 2022

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

137669598 (Observed: 10/5/2022)

Images

Bristly Beard Lichen (Usnea strigosa): Habit
Bristly Beard Lichen (Usnea strigosa): Close-up of 'branch'
Bristly Beard Lichen (Usnea strigosa): Close-up of 'stem'

Ramalina Indet 1 (Twig Lichen)

Group: Lichens

Type: Fruticose

Family: Ramalinaceae

Notes

Common Name: Twig Lichen

Year Noted: 2021

Identified and First Noted By: Nur Ritter

iNaturalist Observations:

70219005 (Observed: 2/26/2021)

Images

Twig Lichen (Ramalina)
Twig Lichen (Ramalina)
Twig Lichen (Ramalina)
Twig Lichen (Ramalina)
Twig Lichen (Ramalina)

Psilolechia lucida (Sulphur Dust Lichen)

Group: Lichens

Type: Leprose-Crustose

Family: Psilolechiaceae

Notes

Common Names: Sulphur Dust Lichen; Glowing Teardrop

Year Noted: 2021

Identified and First Noted By: Nur Ritter

Comments:
Distinctive crust lichen. Almost always found on stone. Thus far, known in the Gordon from a single 'occurrence.'

iNaturalist Observations:

70358251 (Observed: 2/28/2021)

Images

Glowing Teardrop (Psilolechia lucida)
Glowing Teardrop (Psilolechia lucida)
Glowing Teardrop (Psilolechia lucida)
Glowing Teardrop (Psilolechia lucida)

Lepraria Indet 3 (Dust Lichen)

Group: Lichens

Type: Leprose-Crustose

Family: Stereocaulaceae

Notes

Common Name: Dust Lichen

Year Noted: 2021

Identified By: G. Perlmutter (iNaturalist)

First Noted By: Nur Ritter

Images

Dust Lichen (Lepraria)
Dust Lichen (Lepraria)
Dust Lichen (Lepraria)
Dust Lichen (Lepraria)
Dust Lichen (Lepraria)

Sarea resinae (Sarea Lichen)

Group: Lichens

Type: Resinicolous

Family: Sareaceae

Notes

Common Names: Sarea Lichen; Pine Pumpkins

Synonyms: Zythia resinae

Years Noted: 2020; 2021; 2022; 2023

Identified By: James K. Mictchell (iNaturalist)

First Noted By: Nur Ritter

Also Noted By: Kathryn Krueger

Comments:
Noted in the GNA on both pine 'stands', growing on the sap of Eastern White Pine (Pinus strobus): its obligate habitat.

iNaturalist Observations:

157257262 (Observed: 4/28/2023)

107431174 (Observed: 2/22/2022)

45906534 (Observed: 5/14/2020)

46770528 (Observed: 5/21/2020)

68735084 (Observed: 1/28/2021)

70734141 (Observed: 2/26/2021)

Images

Sarea Lichen (Sarea resinae)—the orange 'dots'—growing on pine sap
Sarea Lichen (Sarea resinae)—the orange 'dots'—growing on pine sap
Sarea Lichen (Sarea resinae)—the orange 'dots'—growing on pine sap
Sarea Lichen (Sarea resinae)—the orange 'dots'—growing on pine sap
Sarea Lichen (Sarea resinae)—the orange 'dots'—growing on pine sap

Cladonia caespiticia (Stubby-stalked Cladonia)

Group: Lichens

Type: Squamulose

Family: Cladoniaceae

Notes

Common Names: Stubby-stalked Cladonia; Bank Lichen

Years Noted: 2018; 2019; 2020; 2022

Identified By: C.J. Pasiche Lisboa (iNaturalist)

First Noted By: Nur Ritter

Comments:
To date, a number of occurrences have been noted at the Gordon. One population was noted growing on a large, fallen Black Cherry (Prunus serotina) that still had much of its bark. A number of other occurrences have been noted on heavily decayed, decorticated stumps (all were likely hardwood species).

iNaturalist Observations:

38836548 (Observed: 10/18/2019)

37686398 (Observed: 1/13/2020)

Images

Stubby-stalked Cladonia (Cladonia caespiticia)
Stubby-stalked Cladonia (Cladonia caespiticia)
Stubby-stalked Cladonia (Cladonia caespiticia)
Stubby-stalked Cladonia (Cladonia caespiticia)
Stubby-stalked Cladonia (Cladonia caespiticia)
Stubby-stalked Cladonia (Cladonia caespiticia)

Cladonia coniocraea (Powder Horn Lichen)

Group: Lichens

Type: Squamulose

Family: Cladoniaceae

Notes

Common Names: Powder Horn Lichen; Common Powderhorn

Years Noted: 2019; 2020; 2021; 2022

Identified and First Noted By: Nur Ritter

Also Noted By: Noah Long

Comments:
Fairly common and widespread at the Gordon. At this time, the most commonly encountered Cladonia.

iNaturalist Observations:

104421442 (Observed: 10/16/2021)

102418210 (Observed: 12/1/2021)

95682665 (Observed: 9/21/2021)

90808017 (Observed: 8/6/2021)

85457023 (Observed: 7/2/2021)

70550182 (Observed: 3/3/2021)

70416706 (Observed: 4/14/2020)

70415231 (Observed: 8/17/2020)

37556491 (Observed: 10/25/2019)

37556780 (Observed: 1/13/2020)

51630751 (Observed: 7/1/2020)

Images

Powder Horn Lichen (Cladonia coniocraea)
Powder Horn Lichen (Cladonia coniocraea)
Powder Horn Lichen (Cladonia coniocraea)
Powder Horn Lichen (Cladonia coniocraea)

Cladonia gracilis (Smooth Horn Lichen)

Group: Lichens

Type: Squamulose

Family: Cladoniaceae

Notes

Common Names: Smooth Horn Lichen; Spoon Lichen; Smooth Cladonia

Year Noted: 2020

Identified and First Noted By: Nur Ritter

Comments:
Only a single 'population' noted in the Gordon. This was on a large, fallen Black Cherry (Prunus serotina). As of late-winter 2021, all the bark had fallen off this tree and no Cladonia was observed.

iNaturalist Observations:

37685705 (Observed: 1/17/2020)

69588404 (Observed: 1/21/2020)

Images

Smooth Horn Lichen (Cladonia gracilis)
Smooth Horn Lichen (Cladonia gracilis)
Smooth Horn Lichen (Cladonia gracilis)
Smooth Horn Lichen (Cladonia gracilis)
Smooth Horn Lichen (Cladonia gracilis)

Cladonia macilenta (Lipstick Powderhorn)

Group: Lichens

Type: Squamulose

Family: Cladoniaceae

Notes

Common Names: Lipstick Powderhorn; White Pin Lichen; Pin Lichen; Scarlet Pin Lichen

Years Noted: 2021; 2022

Identified and First Noted By: Nur Ritter

Comments:
To date, a single 'occurrence' noted: growing inside a hollowed-out wooden post.

iNaturalist Observations:

70343150 (Observed: 2/28/2021)

Images

Lipstick Powderhorn (Cladonia macilenta): colonizing the hollow interior of a wooden post
Lipstick Powderhorn (Cladonia macilenta)
Lipstick Powderhorn (Cladonia macilenta)
Lipstick Powderhorn (Cladonia macilenta)

Chaenotheca furfuracea (Sulphur Stubble Lichen)

Group: Lichens

Type: Stubble Lichens

Family: Coniocybaceae

Notes

Common Name: Sulphur Stubble Lichen

Year Noted: 2022

Identified By: Nur Ritter

First Noted By: Nur Ritter & Kathryn Krueger

Also Noted By: Miranda Davies

iNaturalist Observations:

109916637 (Observed: 3/29/2022)

109241468 (Observed: 3/22/2022)

Images

Sulphur Stubble Lichen (Chaenotheca furfuracea): Chaenotheca furfuracea growing on soil on a root ball of a fallen tree
Sulphur Stubble Lichen (Chaenotheca furfuracea): Close-up of the thallus

Mycocalicium subtile (Slender Stubble Lichen)

Group: Lichens

Type: Stubble Lichens

Family: Mycocaliciaceae

Notes

Common Names: Slender Stubble Lichen; Snag Pins

Year Noted: 2019

Identified and First Noted By: Nur Ritter

Comments:
To date, a single occurrence known for the GNA. Growing on a large, fallen, Tulip Tree (Liriodendron tulipifera) log. Reportedly, this species is an indicator of good habitat.

iNaturalist Observations:

40255801 (Observed: 1/29/2019)

Images

Slender Stubble Lichen (Mycocalicium subtile)
Slender Stubble Lichen (Mycocalicium subtile): barely visible and with a hand lens for scale
Slender Stubble Lichen (Mycocalicium subtile)
Slender Stubble Lichen (Mycocalicium subtile)
Slender Stubble Lichen (Mycocalicium subtile)

Phaeocalicium polyporaeum (Polypore Club Lichen)

Group: Lichens

Type: Stubble Lichens

Family: Mycocaliciaceae

Notes

Common Names: Polypore Club Lichen; Fairy Pin; Black Matchstick Fungus

Years Noted: 2018; 2019; 2020; 2021; 2022; 2023; 2024

Identified and First Noted By: Nur Ritter

Also Noted By: Paige Vermeulen; Noah Long; kojo1019; Arriana Rivellini; Maribeth Beatty

Comments:
This diminutive species is known to grow only on the caps of Trichaptum biforme (Violet-toothed Polypore) and other species of Trichaptum. Extremely common at the Gordon: wherever we see older Violet-toothed Polypore, we almost always find Polypore Club Lichen.

iNaturalist Observations:

108195948 (Observed: 3/8/2022)

104409061 (Observed: 1/4/2022)

96932068 (Observed: 10/1/2021)

48171189 (Observed: 6/1/2020)

46023678 (Observed: 5/12/2020)

70254819 (Observed: 2/26/2021)

40809658 (Observed: 3/27/2019)

42226906 (Observed: 4/14/2020)

66309426 (Observed: 12/8/2020)

Images

Polypore Club Lichen (Phaeocalicium polyporaeum)
Polypore Club Lichen (Phaeocalicium polyporaeum)
Polypore Club Lichen (Phaeocalicium polyporaeum)
Polypore Club Lichen (Phaeocalicium polyporaeum)
Polypore Club Lichen (Phaeocalicium polyporaeum)