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Parmotrema stuppeum (Taylor) Hale
Stupp's Ruffle
Federal Protection: No US federal protection
State Protection: No Georgia state protection
Global Rank: G4G5
State Rank: SU
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:
Element Occurrences (EOs) in Georgia: 0
Habitat Summary for element in Georgia: Montane forest
Pale green-gray thallus of broad (0.5-1 cm wide), strongly fluted lobes with undersides brown at lobe edges (black in center); all but newest lobes edged with even white soralia; sparsely ciliate; CHEMISTRY: medulla K+ blood red or maroon, C-, KC-, PD+ yellow-orange, UV- (salazinic acid); FIELD ID: the 2 mentioned below in Similar Species do not occur in the mountains; the even, continuous soralia and relatively flat edge lobes are clues to ID, with a field K test to medulla for confirmation
Parmotrema cristiferum has the same chemistry, but lumpy, uneven soralia; P. praesorediosum is smaller & its medulla is unreactive to chemical tests; P. austrosinense has white undersides to lobes & its medulla is KC+, C+ red (see key below)
Parmotrema diffractaicum
Montane forest, on Quercus bark
Corticolous foliose lichenized fungus, photobiont a green alga (Trebouxia?)
None
Southern Blue Ridge
Unknown
Rare
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
31 May 2022
