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Catinaria atropurpurea (Schaerer) Vezda & Poelt
Tiny Deep-purple Buttons
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: Pine ? oak woodland, mixed hardwood ? pine forest
Thin pale thallus with brown apothecia 0.3-0.6 mm in diameter; disks with prominent concolorous or slightly darker rims; MICROSCOPY: spores colorless, 2-celled, about 10-12.5 x 5-7 µm, epihymenium brown due to pigment in slightly expanded tips of paraphyses (not capitate), hypothecium pale; FIELD ID not possible; the dotlets & tiny buttons can be a confusing group, best sorted by dissection & examination of spores & disks
Amandinea polyspora has brown spores; Catillaria nigroclavata has smaller spores and a black epihymenium due to black-capitate, expanded tips of paraphyses
None
Pine – oak woodland, mixed hardwood – pine forest, on Quercus, Acer bark
Corticolous crustose lichenized fungus, photobiont a green alga in Dictyochloropsis
None
Southern Blue Ridge, Piedmont
Unknown
Rare; like other tiny buttons, this species is easily overlooked, and is likely undercounted
None
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.
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. & D. Ladd. 2005. Preliminary draft: Ozark lichens. Unpublished manuscript, New York Botanical Garden, Bronx, NY.
Malcolm Hodges
15 July 2022