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Parmotrema cristiferum (Taylor) Hale
Lumpy Ruffle; Unwhiskered Ruffle
Federal Protection: No US federal protection
State Protection: No Georgia state protection
Global Rank: G4G5
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: Mesic hardwood forests
Pale gray to green-gray thallus of broad (0.5-1.5 cm wide), strongly fluted lobes with undersides white at lobe edges (black in center); all but newest lobes edged with even white to gray-green, lumpy soralia; lobes non-ciliate; CHEMISTRY: medulla/soralia K+ red, KC-, C-, PD+ orange (salazinic acid); FIELD ID: Parmotrema austrosinense has more vertical ruffles & whiter undersides, but any confusion can be cleared up with field K & C tests to soralia
Parmotrema austrosinense is similar but with K-, KC+, C+ red medulla; P. praesorediosum is smaller with entirely brown/black undersides, & its medulla is unreactive to chemical tests; P. dilatatum is larger, with clumped, uneven soralia, & is sometimes ciliate, with brown-black undersides & different chemistry (see key below)
None
Mesic hardwood forests, on hardwood bark
Corticolous foliose lichenized fungus, photobiont a green alga (Trebouxia?)
None
Coastal Plain; likely introduced into metropolitan Atlanta on nursery-grown trees
Unknown
Rare, increasing
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.
Malcolm Hodges
25 May 2022
