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Erect or ascending herb 12–45 cm. tall with several (to c. 10) branched or often ± unbranched stems from a several-headed woody base; stems 4-angled and densely pubescent above, more rounded at base and often ± glabrous, the epidermis eventually peeling.
Seeds brownish black, 2–2.8 x 1.6–2 x 1–1.3 mm., semi-oblong-ovoid, or rectangular in outline, with a ventral groove broadened at the apex, dorsally slighdy rugulose and with an apical slit similar to but ± more evident than in last species.
Corolla pale yellowish, greenish or white, tube 2.5–3 mm. long, funnel-shaped; lobes 1–2.2 x 0.8–1.2 mm. narrowly triangular, with some hairs outside.
Calyx tube pubescent, c. 1 mm. long, obconic; lobes c. 4, equal or ± unequal, 1.3–3 x 0.5–1 mm., oblong-lanceolate to lanceolate, ciliate.
Flowers few to several in axillary clusters at most nodes, the nodal clusters usually less than 1 cm. diam. in fruiting stage.
Cocci 2.5–3 x 1.5–2 x c. 1.3 mm., semi-ellipsoid or semi-obovoid, densely pubescent.
Style exserted 2–2.5 mm.; stigmatic head 0.5 mm. wide, minutely bilobed.
Filaments exserted 0.7–1 mm.
