top of page

Parmotrema stuppeum (Taylor) Hale

Family :


Hale, Phytologia 28: 339 .1974

Basionym: Parmelia stuppea Taylor, London J. Bot. 6: 175. 1847

ID :


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 :

bottom of page