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FOC | Family List | FOC Vol. 18 | Gesneriaceae

36. Gyrocheilos W. T. Wang, Bull. Bot. Res., Harbin. 1(3): 28. 1981.

圆唇苣苔属 yuan chun ju tai shu

Herbs, perennial, epipetric or terrestrial, rhizomatous, stemless. Leaves few, basal; leaf blade puberulent to pubescent, base cordate. Inflorescences lax, axillary, 5- to many-flowered cymes; bracts 2, opposite. Calyx actinomorphic or slightly zygomorphic, 5-sect from base, 2-5-lobed, or 2-lipped; segments equal to unequal. Corolla purple to reddish, zygomorphic, inside glabrous; tube broadly tubular, not swollen, nearly equalling limb, 3.5-4 mm in diam.; limb 2-lipped; adaxial lip undivided; ca. 1/2 X length of abaxial lip; abaxial lip 3-lobed, lobes equal, apex rounded, rarely obtuse. Stamens 2, adnate to abaxial side of corolla tube near base or rarely above middle, included; anthers dorsifixed, coherent by adaxial surfaces, thecae divaricate, confluent at apex, dehiscing longitudinally; connective not projecting; staminodes 2, adnate to adaxial side of corolla tube. Disc ringlike. Ovary linear, 1-loculed; placentas 2, parietal, projecting inward, 2-cleft. Stigma 1, terminal, capitate, undivided. Capsule straight in relation to pedicel, linear, much surpassing calyx, dehiscing loculicidally to base; valves 2, straight, not twisted. Seeds unappendaged.

* Four species: endemic to China.

1 Petiole and peduncle with antrorsely appressed hairs 0.2-0.6 mm; adaxial leaf blade surface with uniform hairs 0.1-0.2 mm   3 Gyrocheilos microtrichus
+ Petiole and peduncle with spreading or retrorse hairs 0.2-2(-3.2) mm; adaxial leaf blade surface with hairs of 2 lengths, 0.2-0.5(-1.2) and 0.8-3 mm.   (2)
2 (1) Peduncle 4-7 cm; calyx sparsely pubescent outside from base to apex; pedicel spreading pubescent; adaxial corolla lip deltoid; filaments ca. 1.5 mm   2 Gyrocheilos lasiocalyx
+ Peduncle 7-34 cm; calyx glabrous or sparsely pubescent outside near apex; pedicel glabrous; adaxial corolla lip semi-orbicular; filaments ca. 3 mm.   (3)
3 (2) Leaf blade 3-9.5 X 3-10 cm, apex rounded; petiole 3-8 cm; stamens and staminodes adnate to corolla 2-2.5 mm above base   1 Gyrocheilos chorisepalus
+ Leaf blade 7-15.5 X 5.5-15.5 cm, apex acute to obtuse; petiole to 18 cm; stamens and staminodes adnate to corolla 4-5 mm above base   4 Gyrocheilos retrotrichus

Lower Taxa


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