Bryologist 87, 1: 4 (1984).

Basionym: Parmelia cooperi J. Steiner & Zahlbr., in Zahlbr., Bot. Jahrb. 60: 528 (1926).

Chemistry: Lecanoric acid (C+ red), atranorin.

Ecology: Corticolous or rarely saxicolous in dry, well-lit sites, common and widespread from sea level to 3000 m alt.

Thallus: foliose, membranaceous to coriaceous, loosely attached, pale grey to grey-green. Lobes more or less revolute, 0.8 - 2 cm wide, rounded, entire or crenate, ciliate, cilia coarse or slender, (0.3)2 - 5 mm long. Upper side emaculate or faintly maculate, more rarely, distinctly maculate, irregularly cracked towards the centre. Medulla white. Under side black to the margins or with a brown or mottled marginal zone, rhizines short, sparse, unevenly distributed. Soralia marginal and submarginal, soredia granular. Only immature apothecia seen in the East African material. (According to the protologue the spores are 15-19 x 7- 9(10) µm.) Pycnoconidia shortly filiform, 10- 12(14) µm long.

Distribution: Africa, Australia, India, Mexico: Guerrero, Mexico: Oaxaca, Papua New Guinea.

Note: Parmotrema cooperi may be considered the sorediate counterpart of Parmotrema hololobum.