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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 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 forests and swamps

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Description

Pale whitish, green or yellow-green thallus with discrete, mounded, yellow-green soralia; apothecia rarely seen, with red disks (haematommone); prothallus coarsely fibrous; CHEMISTRY: disk K+ purple-black (opaque); thallus K+ yellow (atranorin); FIELD ID possible, noting differences from H. americanum

Similar Species

Other Haematomma species with haematommone in the disk are not sorediate; if sterile, compare with H. americanum, which has flatter soralia, sorediate cracks in thallus, & russulone in disks (deep orange color, K+ burgundy red, reaction translucent); Lepra species have a nonfibrous prothallus

Related Rare Species

None

Habitat

Mesic hardwood forests & swamps; mostly hardwood bark: 25% Acer, 13% Quercus, 9% Carya, 6% Liquidambar,6% Magnolia, 6% Nyssa, 1 record each on Ilex & unidentified hardwood; conifer bark: 13% Taxodium, & 1 record each on Juniperus & Pinus

Life History

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

Survey Recommendations

None

Range

Coastal Plain

Threats

Unknown

Georgia Conservation Status

Uncommon

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 (Lecanoracaea) 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