Gomphostemma microcalyx

Primary tabs

Gomphostemma microcalyx

Description

A coarse perennial herb, 60-150 cm, woody below. Leaves herbaceous, oblong-ovate, 12-15 by 7-9 cm, acute, base abruptly cuneate, entire; Flowers in dense, few-flowered verticillasters in the axils of the lower leaves and on the bare stem below the leaves.

Distribution

Asia-Tropical: Borneo present; Malaya (Peninsular Malaysia present); Sumatera (Sumatera present)
Malesia: Sumatra, Malay Peninsula, and Borneo.

Notes

Closely allied to G. parviflorum WALL. ex BTH., but with a much smaller calyx with diminutive teeth and a much narrower corolla. The structure of the inflorescence in these two species is also different: verticillasters densely congested in G. microcalyx, peduncled, lax and often branched in G. parviflorum.

Citation

KENG 1969 – In: Gard. Bull. Sing.: 82
PRAIN 1891: p. 251. – In: Ann. R. Bot. Gard. Calc.: pl. 84
PRAIN 1907 – In: J. As. Soc. Beng.: 723
Ridl. 1923 – In: Fl. Mal. Pen.: 652