Citation: J. Black, Trans. R. Soc. S. Aust. 58:173 (1934).

Synonymy: C. carinatum R. Br. var. melanocarpum J. Black, Trans. R. Soc. S. Aust. 46:566 (1922).

Common name: Black crumb-weed.

Description:
Prostrate annual branching from the base, aromatic; stems pilosulose with both slender and sessile to stipitate glandtipped hairs; leaves broadly elliptic, bluntly lobed to entire, glandular-puberulent below over the veins; lamina c. 15 mm long; petiole slender, c. 7 mm long.

Flowers in dense axillary clusters; perianth-segments 5, erect; stamen 0 or 1.

Fruiting perianth bluntly stellate in cross-section, c. 1 mm long, crustaceous, black (or pale-fawn in forma leucocarpum), firmly united below, completely covering the fruit; perianth-segments strongly and bluntly keeled, sparsely and minutely hairy; pericarp diaphanous, adherent; seed erect, lenticular, c. 0.5 mm long.

Published illustration: Cunningham et al. (1982) Plants of western New South Wales, p. 260.

Conservation status: native Flowering time: No flowering time is available

SA Distribution Map based on current data relating to specimens held in the State Herbarium of South Australia

Biology: This species frequently hybridises with C. pumilio and C. cristatum.

Key to Infraspecific taxa:

1. Fruiting perianth white	forma leucocarpum 10b.
1. Fruiting perianth black	forma melanocarpum 10a.

Author: Not yet available