Parmotrema lophogenum (Abbayes) Hale
Parmelia lophogena des Abb., Bull. Inst. fr. Afr. noire 20: 19 (1958).
Thallus loosely adnate, 5-8 cm diam., corticolous, mineral grey. Lobes rounded, 7-10 mm diam., margins entire, ciliate, cilia 1.0-1.5 mm long, upper surface shining, plane, continuous, densely lobulate-isidiate, isidia inflated, pustulate, irregular, 0.2-0.3 mm thick, to 0.5 mm tall, fragile. Lower surface black, moderately rhizinate, pale brown to mottled ivory in a broad, naked, marginal zone. Apothecia not seen. Chemistry: Thallus K+ yellow; medulla K-, C+ rose, KC+ rose, Pd-. atranorin and gyrophoric acid.
N: North Auckland, coastal on trees and shrubs, very poorly known. First collected in New Zealand by J.K. Bartlett. Formerly known only from East Africa and Madagascar (Krog and Swinscow, loc. cit., p. 195).
Pantropical