When: 2010-03-12

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

Who: Chris Parrish (kitparrish)

Specimen available

Location: 35°12’38.36"N 85°54’0.40"W el. 587 m, Beckwith’s Point Trail.

Substrate and habitat: Many rosettes and small irregular clumps of less-organized squamules and thalli growing from 0.5 to 3 m above the ground on a slender hardwood tree with rough, furrowed bark and about 12 cm DBH, in oak-hickory woodland near the rim of a canyon, on the western rim of the Cumberland Plateau. The squamulate growth form was on a nearby smooth-barked tree.

medulla: C-, K-, KC-, Pd-.

Identification: Phaeophyscia growing in the form of rosettes, fields of squamules and short lobes, or various stages in between; thallus deep green when wet, and brownish gray when dry; soredia prominently displayed as light greenish pompons held high on the upraised ends of short lateral branches, producing a very distinctive effect; medulla white; rhizines black, abundant, forming a wiry cushion underneath and around the rosettes

The small rosette on the lefthand side of photos 81320, 81321, and 81323 is Pyxine subcinerea.

Sharnoff’s Phaeophyscia pusilloides gallery
CNALH images and locality map, and a larger, interactive locality map.

Voucher specimen:
United States, Tennessee, Franklin County, Sewanee, Beckwith’s Point Trail. 12 Mar 2010. Chris Parrish 0075, det. James C. Lendemer (NY).

Common name: pompon shadow lichen.

Species Lists


thallus, 10x
dense mat of rhizines, 25x
greenish soralia, 32x
greenish soralia, 40x
damage exposes white medulla, 63x
flowing surface texture, 100x
tangled black rhizines and black lower cortex, 50x

Proposed Names

85% (1)
Used references: Hinds and Hinds, 2005, pp.375-387

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= Observer’s choice
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Created: 2010-03-16 02:21:59 CDT (-0400)
Last modified: 2010-06-09 03:02:19 CDT (-0400)
Viewed: 386 times, last viewed: 2019-06-24 20:27:04 CDT (-0400)
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