Usually 30-40 cm high. Branchlets hirsute. Leaves 0.5-1 cm long, alternate, often crowded, erect-spreading, ovate-lanceolate or ovate, subacute, rounded at the base, slightly concave and usually sparsely-pilose above, slightly revolute and crenulate at the margin, ± pilose beneath, with a prominent nerve and conspicuous marginal glands. Flowers solitary in the axils of the upper leaves. Peduncles 3-4 mm long, glabrous, or sparsely pilose on the upper half, subtended by rotund ciliolate bracteoles. Sepals 1.75 mm long, ovate, obtuse or subacute, ciliolate, obtusely convex and with conspicuous glands beneath. Petals 4.5-5 mm long, ovate or widely ovate, rounded at the apex, cuneate at the base, slightly concave above, glabrous, or ciliolate near the base, with 1-3 conspicuous glands beneath. Stamens glabrous. Staminodes 2.5 mm long, oblong-linear or sometimes linear, acute or sometimes almost truncate, widened or, less often, attenuate in the upper half, usually toothed and sparsely ciliate on the upper half, with a small apical gland and often with minute marginal glands near the apex. Disk crenulate. Ovary pubescent on the lower half, with 4 carpels bearing erect oblong pilose processes. Style glabrous, very recurved.
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