When: 2009-03-15

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

Who: Chris Parrish (kitparrish)

Specimen available

Notes:
Location: 35°13’49.26"N, 85°57’47.14"W, el. 575 m, Dotson Point Trail.

Substrate: Growing in many small patches on the trunk of a large tree, mostly within 1.5 m of the ground.

Habitat: Oak-hickory woodland on the western rim of the Cumberland Plateau.

Characterization: corticolous, squamulous lichen with
(1) bright orange medulla
(2) lower cortex black in the center of thallus, white under marginal lobes
(3) long black rhizines with white tips
(4) soredia at and underneath lobe tips

Chemistry:
cortex C-, K-, KC-
medulla C+ dissolves the orange medulla color, K+ black immediately

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

Voucher specimen: Tennessee, Franklin County, Sewanee, Dotson Point Trail, 15 Mar 2009, Chris Parrish 0007, det. Gary Perlmutter (NCU)

Common name: orange-cored shadow lichen

Species Lists

Images

Dotson Point Trail, 2009_03_15
Dotson Point Trail, 2009_03_15
Dotson Point Trail, 2009_03_15
lobes and soredia, 10x
lobes and soredia, 16x
surface texture, 50x
pycnidium, 50x
soredia at and under lobe tips, 63x
soredia erupting from thallus, 63x
3D mounds of soredia, 80x
orange medulla, 50x
bright orange medulla, 100x
bright orange medulla, black lower cortex, long black rhizines, 80x
rhizines, black with white tips, 80x
unbranched black rhizines with white tips, 80x
undersurface, 63x

Proposed Names

28% (1)
Used references: Brodo, Sharnoff, Sharnoff, pp.543-544

Please login to propose your own names and vote on existing names.

= Observer’s choice
= Current consensus

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