Citation: Ill. Cunningham et al. (1982) Plants of western New South Wales, p. 605.

Synonymy: Ruellia primulacea F. Muell. ex Benth., Fl. Aust. 4:546 (1868); D. sessiliforus Bremek., Acta Bot. Neerl. 11:196 (1962); D. corynothecus (F. Muell. ex Benth.)Bremek. ex W.R. Barker in Jessop, Fl. Cent. Aust. 336 (1981).

Common name: None

Description:
Leaves 8.5-25 (rarely 38)x 2.5-11.5 (rarely 20) mm, scabrous or with short white appressed hairs particularly dense in young parts.

Calyx externally with moderately dense eglandular hairs mixed with occasional glandular hairs; corolla throat externally with fine eglandular hairs, internally glabrous; style eglandular-hairy, sometimes sparsely so.

Capsule glabrous, 1-6-seeded, often with remnants of undeveloped ovules and hooks present.

Distribution:  Along watercourses, in rocky areas, within mulga (Acacia aneura) woodland.   W.Aust.; N.T.; Qld; N.S.W. Conservation status: native Flowering time: all year, depending on rains.

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

Biology: No text

Taxonomic notes: A species of northern and central arid Australia with 4 subspecies. 2 of these extend into northern S.Aust. When more is known of their biology there may be reason to raise them to species level.

Key to Infraspecific taxa:

1. Leaf blade pubescent all over; style pubescent; corolla throat pubescent externally	subsp. australasicus 1a.
1. Leaf blade glabrous except for sparse pubescence on margin; style glabrous; corolla throat glabrous externally	subsp. glabratus 1b.

Author: Not yet available