An undershrub about 8 in. high; branches slightly spreading, rather slender, pilose, leaf-scars small but prominent; leaves opposite, lanceolate, acute, 3 lin. long, 2/3 lin. wide, flat, midrib obvious beneath, adpressed silky-pilose on both surfaces; flowers terminal, geminate; calyx silky outside; tube 4 lin. long, slender, inflated below, subcylindrical above; lobes lanceolate, acute, 1 lin. long; petals 4, minute, clavate; anthers oblong, 1/5 lin. long; ovary ovoid; style nearly as long as the calyx-tube; stigma small.
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