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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 High Priority Species (SGCN): No

Element Occurrences (EOs) in Georgia: 0

Habitat Summary for element in Georgia: Woodlands, forests

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Description

Pale green to whitish thallus variably verruculose, continuous; prothallus white, fibrous; bright red apothecia with prominent thalline rims; apothecia frequently with wavy edges or irregular shape when mature; CHEMISTRY: red disks K+ purple-black (haematommone), pigment bleeding away in KOH wet-mount; thallus K+ yellow (atranorin), also containing placodiolic acid (detectable with thin-layer chromatography, TLC); FIELD ID to genus only

Similar Species

Requires TLC to differentiate between 2 morphologically identical species, Haematomma accolens & H. flexuosum (the latter has isoplacodiolic & isopseudoplacodiolic acids instead of placodiolic acid in medulla); many Ga. specimens remain identified only to genus, but of 21 specimens in New York Botanical Garden (NYBG) herbarium, 1 is H. accolens & 20 are H. flexuosum, so it seems the latter is more abundant in Ga.; other Haematomma with haematommone in epihymenium are sorediate (see key below)

Related Rare Species

None

Habitat

The species pair are widespread in woodlands & forests, mostly on hardwood bark (especially Quercus)

Life History

Corticolous crustose lichenized fungus, photobiont a unicellular green alga (Trebouxia?)

Survey Recommendations

More will come to light in the next few years after many more specimens are tested with TLC at NYBG

Range

Unknown (single specimen identified to this species was in the Coastal Plain)

Threats

Unknown

Georgia Conservation Status

Unknown

Conservation Management Recommendations

None

References

Brodo, I. M. 2001. Lichens of North America. Yale University Press, New Haven, Conn.

Brodo, I. M. 2016. Keys to lichens of North America: revised and expanded. Yale University Press, New Haven, Conn.

Brodo, I. M., W. L. Culberson & C. F. Culberson. 2008. Haematomma (Lecanoraceae) in North and Central America, including West Indies. Bryologist 111: 363-423.

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.

Authors of Account

Malcolm Hodges

Date Compiled or Updated

10 March 2022