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.
Arthoniaceae Indet 1 (Crustose Lichen)
Group: Lichens
Type: Crustose
Family: Arthoniaceae
Notes
Common Name: Crustose Lichen
Year Noted: 2020
Identified and First Noted By: N. Ritter.
Images
Candelariella efflorescens (Powdery Gold Speck Lichen)
Group: Lichens
Type: Crustose
Family: Candelariaceae
Notes
Common Names: Powdery Gold Speck Lichen; Yellow Powder
Year Noted: 2019
Identified and First Noted By: N. Ritter.
Images
Candelariella vitellina (Common Yolk Lichen)
Group: Lichens
Type: Crustose
Family: Candelariaceae
Notes
Common Names: Common Yolk Lichen; Common Goldspeck Lichen
Year Noted: 2021
Identified and First Noted By: N. Ritter.
Images
Graphis scripta Complex (Common Script Lichen)
Group: Lichens
Type: Crustose
Family: Graphidaceae
Notes
Common Name: Common Script Lichen
Years Noted: 2020; 2021
Identified and First Noted By: N. Ritter.
Comments:
To date, a single 'occurrence' noted: growing on a large, fallen Northern Red Oak (Quercus rubra).
Images
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: N. Ritter.
Lecanora hybocarpa (Under-fruited Lichen)
Group: Lichens
Type: Crustose
Family: Lecanoraceae
Notes
Common Names: Under-fruited Lichen; Bumpy-rim Lichen
Years Noted: 2019; 2021
Identified and First Noted By: N. Ritter.
Images
Lecanora strobilina (Mealy Rim-lichen)
Group: Lichens
Type: Crustose
Family: Lecanoraceae
Notes
Common Name: Mealy Rim-lichen
Years Noted: 2019; 2021; 2023
Identified By: C.J. Pasiche Lisboa (iNaturalist); First Noted By: Nur Ritter.
Images
Lecanoraceae Indet 1 (Rim-lichen)
Group: Lichens
Type: Crustose
Family: Lecanoraceae
Notes
Common Name: Rim-lichen
Year Noted: 2020
Identified and First Noted By: N. Ritter.
Comments:
At this point, only a single occurrence noted. Growing on a small, fallen branch.
Images
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: N. Ritter.
Comments:
At this point, only a single occurrence noted. Growing on a small, fallen branch.
Images
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: N. Ritter.
Images
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
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.
Images
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: N. Ritter.
Images
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: N. Ritter.
Comments:
Saxicolous (i.e., growing on stone), crustose lichen.
Images
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: N. Ritter.
Comments:
Saxicolous (i.e., growing on stone), crustose lichen.
Images
Lepra pustulata (Pustule Crust Lichen)
Group: Lichens
Type: Crustose
Family: Pertusariaceae
Notes
Common Name: Pustule Crust Lichen
Synonyms: Loxospora pustulata
Year Noted: 2020
Identified and First Noted By: N. Ritter.
Images
Pertusaria Indet. #1 (Pore Lichens)
Phlyctis argena (Whitewash Lichen)
Group: Lichens
Type: Crustose
Family: Phlyctidaceae
Notes
Common Name: Whitewash Lichen
Years Noted: 2020; 2021
Identified and First Noted By: N. Ritter.
Comments:
A tentative ID.
Images
Micarea peliocarpa (Shadow Dot Lichen)
Group: Lichens
Type: Crustose
Family: Pilocarpaceae
Notes
Common Name: Shadow Dot Lichen
Year Noted: 2020
Identified and First Noted By: N. Ritter.
Comments:
Noted growing on a rock in a shaded, 'moist' area (i.e., about 10' upslope from a stream).
Images
Bacidia (Dot Lichen)
Group: Lichens
Type: Crustose
Family: Ramalinaceae
Notes
Common Name: Dot Lichen
Year Noted: 2020
Identified and First Noted By: N. 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.
Images
Lecanora Indet 2 (Dust Lichen)
Candelaria concolor (Lemon Lichen)
Group: Lichens
Type: Foliose
Family: Candelariaceae
Notes
Common Names: Lemon Lichen; Candle Flame Lichen
Years Noted: 2018; 2019; 2020; 2021
Identified and First Noted By: N. Ritter.
Comments:
Seemingly one of the most common lichens at the Gordon.
Images
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
Identified and First Noted By: N. Ritter.
Comments:
Seemingly, common at the Gordon.
Images
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: N. Ritter.
Comments:
Seemingly, quite common at the Gordon.
Images
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: N. Long.
Comments:
Thus far, known from in the Gordon from two occurrences: 1) growing on a fallen Norway Maple (Acer platanoides) branch in full sun in the meadow and, 2) growing on a fallen tree at the edge of secondary forest.
Images
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.
Images
Hyperphyscia syncolla (Smooth Shadow-crust Lichen)
Group: Lichens
Type: Foliose
Family: Physciaceae
Notes
Common Name: Smooth Shadow-crust Lichen
Year Noted: 2019
Identified and First Noted By: N. 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).
Images
Phaeophyscia pusilloides (Tiny Blister Lichen)
Group: Lichens
Type: Foliose
Family: Physciaceae
Notes
Common Names: Tiny Blister Lichen; Pom-pom Shadow Lichen
Year Noted: 2019
Identified and First Noted By: N. Ritter.
Images
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
Identified and First Noted By: N. Ritter.
Comments:
Appears to be somewhat common at the Gordon.
Images
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: N. Ritter.
Images
Physcia Indet 1 (Rosette Lichens)
Group: Lichens
Type: Foliose
Family: Physciaceae
Notes
Common Name: Rosette Lichens
Year Noted: 2020
Identified and First Noted By: N. Ritter.
Comments:
Likely either Physcia aipolia or P. stellaris.
Images
Physcia millegrana (Lace-tipped Lichen)
Group: Lichens
Type: Foliose
Family: Physciaceae
Notes
Common Names: Lace-tipped Lichen; Mealy Rosette Lichen
Years Noted: 2018; 2019
Identified and First Noted By: N. Ritter.
Comments:
Frequently encountered in the GNA.
Note: This species is very tolerant of air pollution.
Images
Xanthomendoza Indet (Sunburst Lichen)
Pycnothelia papillaria (Nipple Lichen)
Group: Lichens
Type: Fruticose
Family: Cladoniaceae
Notes
Common Name: Nipple Lichen
Year Noted: 2019
Identified By: Nur Ritter; First Noted By: Nur Ritter & M. Beatty.
Comments:
Thus far, a single occurrence noted at the Gordon.
Images
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: N. Ritter.
Comments:
Distinctive crust lichen. Almost always found on stone. Thus far, known in the Gordon from a single 'occurrence.'
Images
Lepraria Indet 1 (Dust Lichen)
Group: Lichens
Type: Leprose-Crustose
Family: Stereocaulaceae
Notes
Common Names: Dust Lichen
Years: 2019
Identified By: N. Ritter
Comments:
Growing on the lower trunk of a large Tulip Poplar (Liriodendron tulipifera).
Images
Lepraria Indet 2 (Dust Lichen)
Group: Lichens
Type: Leprose-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.
Images
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.
Images
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).
Images
Cladonia coniocraea (Powder Horn Lichen)
Group: Lichens
Type: Squamulose
Family: Cladoniaceae
Notes
Common Names: Powder Horn Lichen; Common Powderhorn
Years Noted: 2019; 2020; 2021
Identified and First Noted By: N. Ritter
Also Noted By: N. Long.
Comments:
Seemingly somewhat common at the Gordon, with three, fairly disjunct populations having been noted.
Images
Cladonia gracilis (Smooth Horn Lichen)
Group: Lichens
Type: Squamulose
Family: Cladoniaceae
Notes
Common Names: Lipstick Powderhorn; White Pin Lichen; Pin Lichen; Scarlet Pin Lichen
Years Noted: 2019; 2020; 2021
Identified and First Noted By: N. Ritter.
Images
Cladonia macilenta (Lipstick Powderhorn)
Group: Lichens
Type: Squamulose
Family: Cladoniaceae
Notes
Common Names: Lipstick Powderhorn; White Pin Lichen; Pin Lichen; Scarlet Pin Lichen
Year Noted: 2021
Identified and First Noted By: N. Ritter.
Images
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: N. 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.
Images
Phaeocalicium polyporaeum (Polypore Club Lichen)
Group: Lichens
Type: Stubble Lichens
Family: Mycocaliciaceae
Notes
Common Names: Polypore Club Lichen; Fairy Pin; Black Matchstick Fungus
Synonyms: Calicium polyporaeum; Mycocalicium polyporaeum
Years Noted: 2018; 2019; 2020; 2021; 2022
Identified and First Noted By: N. Ritter
Also Noted By: P. Vermeulen; N. Long; kojo1019; A. Rivellini; M. 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.