Observation 33432: Myelochroa galbina (Ach.) Elix & Hale
When: 2010-02-07
Herbarium specimen reported

Notes: 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-)

References:
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

Images

77681
77684
77685
77686
77687
77688
apothecia and thallus, 7.1x
77689
lobes, 25x
77690
pale yellow medulla below apothecium, 63x
77691
pale yellow medulla below apothecium, 80x
77692
laminal pycnidia, 63x

Proposed Names

28% (1)
Eye3 Eyes3
Used references: Brodo, Sharnoff, and Sharnoff, 2001, pp.447-448; Harris and Ladd, 2005, pp.15, 154-155

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2010-02-11 01:03:33 EST (-0500)
Last modified: 2010-02-11 01:03:33 EST (-0500)
Viewed: 334 times, last viewed: 2016-06-18 01:44:29 EDT (-0400)
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