
Hypotrachyna crenata (Kurok.) Hale
Family :
Parmeliaceae
Hale, Phytologia 28: 34. 1974
Basionym: Parmelia crenata Kurok. in Hale & Kurokawa, Contr. U.S. Nat. Herb. 36: 168. 1964
ID :
BU/BRL/2022/019
Thallus :
Loosely attached, growing over mosses on rocks, yellowish glaucous to light mineral gray (R), 3-6 cm. in diameter
Lobes :
irregularly branched, more or less imbricate, rounded at the tips, 1.5 - 5.0 mm. wide, 90-110µ thick, the margins crenate
Upper Side:
Smooth, without maculae
Isidia :
Moderately Isidiate, the isidia short, less than 0.5 mm. high, often branched
Lower Side :
Black, pale brown in a narrow zone at the tips, sparsely rhizinate, the rhizines black, sparsely to moderately branched
Medulla :
White
Not seen
Apothecia :
Ascospores :
Thallus K+ yellow; medulla K+ yellow, C - , KC - , P + pale orange, atranorine and stictic acid present
Chemistry :