Observation 34813: Platismatia tuckermanii (Oakes) Culb. & C. Culb.
When: 2010-02-28
Herbarium specimen reported

Notes: Location: 35°12’45.15"N 85°53’47.26"W el. 586 m, Sewanee-St.Andrew’s Trail.

Substrate and habitat: Growing on a horizontal branch of 5 m tall, sprawling tree near the rim of a widening canyon, in oak-hickory woodland on the western rim of the Cumberland Plateau.

Chemistry:
medulla: C-, K-, KC- UV-.

Identification: Spreading corticolous lichen with prominent apothecia, broad lobes with reticulate ridges and white maculae, and imbedded marginal pycnidia. Similar species include members of the Tuckermannopsis ciliaris group (T. americana, ciliaris, and orbata), which have projecting, barrel-like, marginal pycnidia and (often) cilia, and lack the strongly ridged, maculate upper cortex.

References:
Sharnoff’s Platismatia tuckermanii gallery
CNALH images and locality map, and a larger, interactive locality map.

Voucher specimen:
United States, Tennessee, Franklin County, Sewanee, Sewanee-St.Andrew’s Trail. 28 Feb 2010. Chris Parrish 0071.

Common name: crumpled rag lichen.

Species Lists

Images

81196
81197
81198
81199
apothecium, 10x
81200
apothecium, 20x
81201
marginal pycnidia, 25x
81202
marginal pycnidia, 25x
81203
undersurface, 32x
81204
undersurface with scrobiculate ridges and valleys, 20x

Proposed Names

28% (1)
Eye3 Eyes3
Used references: Hinds and Hinds, 2005, pp.413-416

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2010-03-14 23:23:48 CET (+0100)
Last modified: 2010-03-14 23:23:48 CET (+0100)
Viewed: 168 times, last viewed: 2016-11-01 19:17:15 CET (+0100)
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