Loading profile. Please wait . . .
Strigula jamesii (Swinscow) R.C. Harris
James?s Bark-bumps
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: Mesic hardwood forest
Whitish to gray thallus thin, corticate, continuous; tiny hemispherical perithecia 0.1 mm in diameter, black, naked at all stages, erumpent becoming prominent, sessile at maturity; MICROSCOPY: spores colorless, (3-)4-celled, 13-17(-18) x 4-5 µm; FIELD ID: one of several crusts with white thallus & black perithecia requiring dissection to identify
Other Strigula on bark in Ga. have either 2-celled or 8-celled spores; several unrelated whitish, ecorticate crusts with black perithecia are found in hardwood forests (see key below); the present species is excluded & would key to Polymeridium subcinereum, its colorless spores also 4-celled, though slightly larger on average; its thallus lacks a cortex, with flatter perithecia emerging with a thin veil of thallus, becoming naked at maturity
None
Mesic pine – hardwood forest, on Quercus bark
Corticolous foliose lichenized fungus, photobiont a green alga in Trentepohlia
None
Piedmont
Unknown
Rare
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.
Harris, R. C. 1995. More Florida lichens including the 10-cent tour of the pyrenolichens. Unpublished manuscript, Bronx, N.Y.
Malcolm Hodges
4 August 2022
