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Tremacron Craib


Description from Flora of China

Herbs, perennial, epipetric or terrestrial, rhizomatous, stemless. Leaves many, basal; leaf blade villous to puberulent, base attenuate to cordate. Inflorescences sometimes umbel-like, lax, axillary, 1- to many-flowered cymes; bracts 2, opposite. Calyx actinomorphic, 5-sect from base; segments equal. Corolla yellow to red or white, zygomorphic, inside usually glabrous; tube subcampanulate to funnelform-tubular, not swollen, 5-6 X longer than limb, 3-7 mm in diam.; limb 2-lipped; adaxial lip emarginate to nearly entire, extremely short, extending only slightly beyond mouth; abaxial lip 3-lobed, central lobe longer than laterals, apex rounded. Stamens 4, adnate to corolla near base, all or only abaxial ones exserted; anthers basifixed, free, thecae parallel, divergent at base, confluent at apex, dehiscing longitudinally; connective not projecting; staminode 1, rarely absent, adnate to adaxial side of corolla tube. Disc ringlike. Ovary narrowly oblong, 1-loculed; placentas 2, parietal, projecting inward, 2-cleft. Stigmas 2, equal, oblate, undivided, rarely 2-lipped. Capsule straight in relation to pedicel, oblong lanceolate to narrowly oblong, much longer than calyx, dehiscing loculicidally to base; valves 2, straight, not twisted. Seeds unappendaged.

* Seven species: endemic to China.

Lower Taxa


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