Usnochroma scoriophilum (A. Massal.) Søchting, Arup & Frödén

in Arup, Søchting & Frödén, Nordic J. Bot. 31: 72 (2013).

[as 'scoriophila'], Nordic Jl Bot. 31(1): 75 (2013) Basionym: Placodium scoriophilum A. Massal., xxx: 55 (1861).

Type: South Africa, Cap. b. spei, 1857, Wawra (W - holotype).