compactly branched; branchlets at first sprinkled with minute very shortly stalked glands, soon becoming glabrous and pale greyish; leaves 3-nate, erectly imbricate or rarely shorter than the internodes, 1–1 3/4 lin. long, linear, acute, glabrous, ciliate with sessile glands; flowers 3–6 together in small terminal heads, subsessile; calyx broad and shallow, glabrous, about 1/2 lin. long to the tips of the short lobes, which are shorter than the corolla-tube and united for nearly half their length, the long lobe free to the base or united as high up as the others, all edged with minute hairs and sessile glands; corolla about 2/3 lin. long and as much or more in breadth, cup-shaped, glabrous; stamens 8; filaments from rather more than half to nearly as long as the anthers, connate up to and with the base of them; anthers 1/3 lin. long, broadly-oblong to subquadrate; ovary compressed, broader than long, glabrous, whitish, with a minutely rugulose surface, 2-celled; stigma flattened funnel-shaped, with a narrow erect or inflexed rim above and a slightly prominent margin beneath, glabrous, abruptly tapering to a very short style which is sometimes almost wanting. null