Norw. J. Bot. 23: 166 (1976).
Synonym: Index Fungorum
Type:
Thallus: rigid, erect to subpendulous, to 10 cm long, sparsely subdichotomously branched. Branches greenish grey, solid, bilateral, linear, flat or more or less canaliculate, 2 - 4 mm wide, gradually tapering, with occasional short, longitudinal depressions, marginal pseudocyphellae linear, inconspicuous, laminal pseudocyphellae shortly linear, rare; margins with numerous raised tubercles. soredia absent. Apothecia lateral, mainly marginal but sometimes laminal, shortly stipitate, margins smooth or slightly crenate. Spores fusiform, 18 - 25 / 5 - 6 µm, one-septate, with 2 - 4 pseudosepta, straight or somewhat curved (Swinscow & Krog 1988: 283).
Chemistry: Usnic acid in cortex, boninic acid and an undetermined substance in medulla (Swinscow & Krog 1988: 284).
Ecology: In East Africa corticolous on shrubs in mangroves, rare but locally common (Swinscow & Krog 1988: 284).
Molecular data: Genbank
Distribution: Database
Note: Except for spore differences, this species comes close to Ramalina subfraxinea var. leiodea (Nyl.) N. Stevens (Swinscow & Krog 1988: 284).