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.

Chemistry: medulla: C-, K+ yellow, KC-

Identification: Myelochroa galbina resembles Hypotrachyna livida, and both are found on canopy branches in eastern decidous woodlands. They are distinguished by medulla color and chemistry (Harris and Ladd, 2005, pp.15, 154-155):
Myelochroa galbina (medulla yellow near apothecia, K+ yellow)
Hypotrachyna livida (medulla white throughout, K-)

Sharnoff’s Myelochroa galbina gallery
CNALH images and locality map, and a larger, interactive locality map.

Voucher specimen: United States, Tennessee, Franklin County, Sewanee, Woodlands. 07 Feb 2010. Chris Parrish 0041, det. James C. Lendemer (NY)

Common name: smooth axil-bristle lichen

Species Lists


apothecia and thallus, 7.1x
lobes, 25x
pale yellow medulla below apothecium, 63x
pale yellow medulla below apothecium, 80x
laminal pycnidia, 63x

Proposed Names

28% (1)
Used references: Brodo, Sharnoff, and Sharnoff, 2001, pp.447-448; Harris and Ladd, 2005, pp.15, 154-155

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= Observer’s choice
= Current consensus


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Created: 2010-02-11 01:03:33 CST (-0500)
Last modified: 2010-02-11 01:03:33 CST (-0500)
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