Observation 33597: Parmotrema reticulatum (Taylor) M. Choisy

When: 2010-02-07

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

Who: Chris Parrish (kitparrish)

Specimen available

Locality: 35°12’47.92"N, 85°55’20.20"W, el. 586 m. Woodlands.

Substrate and habitat: Growing on a branch of scarlet oak, Quercus coccinea, brought to the ground by recent rain storms, in a park-like residential area bordering oak-dominated eastern deciduous woodland at the western rim of the Cumberland Plateau.

Cortex: C-, K+ yellow to dark red to dark brown, KC- (bleaches much of the color), Pd+ yellow to orange in tiny spots and along cracks
Medulla: C-, K+ bright yellow to orange to red to dark red to dark brown, Pd+ bright orange immediately

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

Voucher specimen: United States, Tennessee, Franklin County, Sewanee, Woodlands. 07 Feb 2010. Chris Parrish 0051, det. James C. Lendemer (NY).

Common name: cracked ruffle lichen

Species Lists


cracked thallus, 25x
cracked thallus, 25x
laminal macular network, 80x
marginal soredia, 40x
lobe with thin brown border; rhizines right up to thallus margin, 25x
forked rhizines, 80x
lower cortex brown near margin, black in center, 16x

Proposed Names

28% (1)
Used references: Brodo, Sharnoff, and Sharnoff, 2001, pp.642-643; Harris and Ladd, 2005, p.171

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= Observer’s choice
= Current consensus


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Created: 2010-02-14 23:51:44 EST (-0500)
Last modified: 2010-06-09 01:37:26 EDT (-0400)
Viewed: 293 times, last viewed: 2019-02-01 23:44:09 EST (-0500)
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