Loading profile. Please wait . . .
Hypotrachyna mcmulliniana Lendemer & J.L. Allen
Troy's Hairy-spined Loop; Troy's Hairy-spined Shield
Federal Protection: No US federal protection
State Protection: No Georgia state protection
Global Rank: GNR
State Rank: SNR
Element Locations Tracked in Biotics: No
SWAP 2015 Species of Greatest Conservation Need (SGCN): No
SWAP 2025 Species of Greatest Conservation Need (SGCN): No
2025 SGCN Priority Tier: None
Element Occurrences (EOs) in Georgia: 0
Habitat Summary for element in Georgia: Wide variety of forests and woodlands
Gray thallus of small, adnate, relatively broad lobes, rounded sinuses forming circular gaps between lobes (“loops”); mostly unbranched, short black rhizines on some lobe margins; underside black; abundant, usually short to long isidia at center of thallus, sparsely to moderately ciliate (searching will usually turn up a few); CHEMISTRY: medulla K-, KC+ red, C-; FIELD ID: broad-lobed examples with sparsely ciliate isidia are obvious, but some intermediates might best be left at genus
This species was recently split from Hypotrachyna horrescens; the latter has narrow lobes, & its isidia are more consistently long & abundantly ciliate; Hypotrachyna minarum appears similar, but its isidia are more often short & never ciliate, & its medulla is C+ pink
Hypotrachyna croceopustulata, H. cryptochlora, H. oostingii, H. pseudosinuosa
Wide variety of forests & woodlands; substrates: hardwood bark: 24% Quercus, 9% Carya, 5% Acer, & 22% other hardwoods or unknowns; conifer bark: 28% Pinus, 2 records on Taxodium & 1 on Juniperus; 9% on silicious rock
Corticolous foliose lichenized fungus, photobiont a unicellular green alga (Trebouxia?)
None
Statewide
Unknown
Common
None
Brodo, I. M. 2001. Lichens of North America. Yale University Press, New Haven, Conn.
Esslinger, T. L. 2021. A cumulative checklist for the lichen-forming, lichenicolous and allied fungi of the continental United States and Canada. Version 24. Opuscula Philolichenum 20: 100-394.
Lendemer, J. C. & J. L. Allen. 2020. A revision of Hypotrachyna subgenus Parmelinopsis (Parmeliaceae) in eastern North America. Bryologist, 123: 265-332.
Malcolm Hodges
25 March 2022
