Department of Botany,
Bharathiar University, Coimbatore - 641 046
Parmotrema stuppeum (Taylor) Hale
Family :
Parmeliaceae
Hale, Phytologia 28: 339 .1974
Basionym: Parmelia stuppea Taylor, London J. Bot. 6: 175. 1847
ID :
BU/BRL/2022/031
Thallus :
Foliose, adnate to loosely adnate, 2-20 cm in diam., lobate
Lobes :
Sub irregular, elongate, slightly imbricate, plane, separate, 4-8 mm wide; apices: rotund, ciliate; cilia: up to 2.0 mm long
Upper Side:
Gray, smooth, dull, emaculate
Isidia :
Granular, common, in linear to orbicular, laminal or marginal soralia; isidia and pustulae: absent
Lower Side :
black with brown, naked zone peripherally, centrally rhizinate; rhizines: scattered, simple, black
Medulla :
White with continuous algal layer
Rare, sub stipitate, up to 30 mm in diam.; margin: crenulate; disc: brown, imperforate
Apothecia :
Ellipsoid, 12-17 x 6-9 µm Pycnidia: common, punctiform conidia: sublageniform, 4-6 x 1 µm
Ascospores :
Upper cortex K+ yellow, C-, KC-, P-; medulla K+ yellow turning deep red, C-, KC-, P+ orange Secondary metabolites: upper cortex with atranorin and chloroatranorin; medulla with salazinic acid (major) and consalazinic acids (minor)
Chemistry :
