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Calicium lenticulare Ach.
Stubble lichen
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: Swamps, bottomland forests
Granular yellowish-white thallus with black stipitate apothecia; disks disintegrating into a powdery black mazaedium; stalk over 0.5 mm, with cup often white-rimmed; CHEMISTRY: thallus KC- (no substances); MICROSCOPY: spores brown, 2-celled, about 11-13 x 6-7.5 µm; FIELD ID: the confusing array of stubble lichens & unlichenized fungi require dissection to sort out
Calicium hyperelloides also has stalks over 0.5 mm tall, but its thallus is KC+ orange; C. salicinum has brown pruina on underside of apothecium & small, ornamented spores; C. trabinellum has a yellow-pruinose disk; C. abietinum has short stalks 0.1 mm tall, & black apothecia; other stubbles have either simple spores or persistent hymenia
None
Swamps, bottomland forests, on conifer bark & wood (Pinus, Taxodium)
Corticolous & lignicolous, crustose lichenized fungus, photobiont an alga in genus Trebouxia
None
Coastal Plain
Unknown
Rare; an obscure species easily overlooked, & thus its status difficult to assess
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. 1995. More Florida lichens including the 10-cent tour of the pyrenolichens. Unpublished manuscript, Bronx, N.Y.
Malcolm Hodges
13 July 2022