Erect, slenderly branched, but not diffuse or straggling; branches pubescent or glandular-hairy; leaves usually 3-nate, rarely also 4-nate on the same plant, spreading, not crowded, sometimes distant and much shorter than the long internodes, linear as if subterete and sulcate with strongly revolute margins, or in more luxuriant plants lanceolate or oblong, and open-backed with reflexed margins, acute, aristate, pubescent or pilose, usually gland-ciliate, 1 1/2-2 1/2 (occasionally 4) lin. long; flowers axillary, mostly 3-nate in the whorls towards the ends of the branches; pedicels slender, 2-2 1/2 lin. long; bracts sometimes, or always (?) one approximate, small, usually two basal, large, leaf-like; sepals mostly somewhat loose or spreading, lanceolate, acute, foliaceous, pubescent, gland-ciliate, under 1 lin. long, margins reflexed; corolla subtubular-campanulate, only slightly widened to the mouth, puberulous, 1 1/2-2 lin. long; segments slightly spreading, about 1/3 as long as the tube; filaments from a short ovate or obovate base thence abruptly contracted upward; anthers exserted, or sometimes long exserted, lateral, dorsifixed shortly above the base, semiovate, dorsally curved, anteriorly straight, glabrous, mostly pale brown, about 2/5 lin. long, muticous; pore less than 1/2 as long as the cell; style exserted, slender; stigma capitellate, small; ovary glabrous or pubescent on the top.
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Erect shrublet to 30 cm. Flowers small, bell-shaped, magenta-pink, with exserted anthers.