Flavoparmelia amplexa (Stirt.) Hale

Pseudoparmelia amplexa

Pseudoparmelia amplexa (Stirton) Hale, 1974:189.

Parmelia amplexa Stirton, 1877:212 [type collection; Somerset East, Union of South Africa, MacOwan (BM, lectotype; GLAM, isolectotype)].

Parmelia caperata var. glaucopis Müller Argoviensis, 1894:258 [type collection: Matangiri, Seen Region, Africa, Stuhlmann 359 (559 on type label) (G, lectotype; BM, isolectotype)].

Parmelia glaucopis (Müller Argoviensis) Vainio, 1900:4.

Parmelia subconspersa var. benguellensis Vainio in Welwitsch, 1901:401 [type collection: Mt. Morro de Lopollo, Huílla, Angola, Welwitsch 31 (BM, lectotype)].

Parmelia benguellensis (Vainio) Dodge, 1959:70.

Pseudoparmelia benguellensis (Vainio) Hale, 1974:189.

DESCRIPTION.—Thallus rather closely adnate on bark, coriaceous, greenish yellow, 3–5 cm broad; lobes sublinear, crowded, partly black rimmed, 1–2 mm wide; upper surface plane, dull, rugose and becoming lobulate with age and heavily pycnidiate; lower surface black and minutely velvety to the margin, sparcely to moderately rhizinate. Apothecia numerous, sessile, 1–2 mm in diameter; spores 8, 7–8 × 16–18 μm.

CHEMISTRY.—Cortex K−, medulla K−, C−, KC−, or KC+ rose, P+ red; usnic acid and protocetraric acid with or without a trace of atranorin.

DISTRIBUTION.—Southern Africa.

HABITAT.—On trunks and branches of trees in open rocky areas.