When: 2009-01-25

Collection location: Sewanee, Franklin Co., Tennessee, USA [Click for map]

Who: Chris Parrish (kitparrish)

No specimen available

35°12’36.32"N, 85°55’53.79"W, el. 574 m. Lake Cheston.
35°12’15.59"N, 85°55’13.48"W, el. 589 m. Central campus.

Substrate and habitat: Growing within 1 m of the ground on a tree trunk on a park-like grassy slope beside a small lake (in situ photos, Lake Cheston). Growing on ornamental shrub branches and twigs and on fallen fragments of tree branches, twigs, and bark brought down by recent high winds and rain (close-up photos, central campus).

Characterization: ruffle lichen with
(1) prominent apothecia with perforated cup-like disks
(2) white maculae on thallus surface
(3) lobe margins irregular, with conspicuous black pycnidia
(4) undersurface with white patches near the margins

Lake Cheston, 25 jan 2009: 36204, 36208, 36242
Central campus, 14 feb 2009: 36246-36247, 36250-36251, 36254-36255, 36257-36258, 36261

Sharnoff’s Parmotrema perforatum gallery
CNALH images, description, and locality map, and a larger, interactive locality map.

Common name: perforated ruffle lichen

Species Lists


cups, 16x
cups, 20x
cups, 25x
pycnidia, 32x
pycnidia, 115x
ridges on underside of thallus, 32x
ridges on underside of thallus, 40x
setae, upper side of lobe, 32x
setae, underside of lobe, 40x

Proposed Names

46% (2)
Used references: Brodo, Sharnoff, and Sharnoff, pp.498-499.

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= Observer’s choice
= Current consensus


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