Loading profile. Please wait . . .
Catillaria nigroclavata (Nyl.) Schuler
Tiny Black-club 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: Mixed pine ? hardwood forests
Thallus thin, greenish, with dark apothecia 0.3-0.4 mm in diameter; disks flat, rimmed; MICROSCOPY: spores colorless, 2-celled, 6.5-8 x 2.5-3 µm, epihymenium black due to expanded, black-capitate tips of paraphyses; 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; Catinaria atropurpurea has colorless spores much larger, 10-12.5 µm long, & a brown epihymenium lacking expanded, black-capitate paraphyses
None
Mixed pine – hardwood forests, with 3 records on Quercus bark, 5 on other hardwoods, & 1 on Pinus
Corticolous crustose lichenized fungus, photobiont an alga in Myrmecia or Dictyochloropsis
None
Cumberland Plateau, Ridge & Valley, Southern Blue Ridge, Piedmont
Unknown
Rare to occasional; like other tiny buttons, this species is easily overlooked, and is likely undercounted
None
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 Unpublished manuscript, New York Botanical Garden, Bronx, NY.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