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FOC | Family List | FOC Vol. 18 | Gesneriaceae

53. Whytockia W. W. Smith, Trans. & Proc. Bot. Soc. Edinburgh. 27: 338. 1919.

异叶苣苔属 yi ye ju tai shu

Oshimella Masamune & Suzuki.

Herbs, perennial, terrestrial, not rhizomatous. Stems erect or ascending, simple or branched. Leaves few, along stem, opposite, very unequal in each pair; leaf blade sparsely puberulent, base strongly oblique, cuneate to cordate. Inflorescences lax, axillary or pseudoterminal, few- to many-flowered cymes; bracts apparently absent. Calyx actinomorphic, 5-sect from base or 5-lobed; segments equal, with many longitudinal secretory canals. Corolla white, reddish, or purple, zygomorphic, inside sparsely puberulent below abaxial lip or with lines of hairs; tube subtubular to funnelform-tubular, not swollen, longer than limb, 4-6 mm in diam.; limb 2-lipped; adaxial lip 2-lobed, slightly shorter than to subequal to abaxial lip; abaxial lip 3-lobed, lobes equal or central lobe longer, apex rounded. Stamens 4, adnate to corolla tube near base, included; anthers dorsifixed, coherent, thecae divergent, confluent at apex, dehiscing longitudinally; connective not projecting; staminode 1, adnate to adaxial side of corolla tube. Disc ringlike. Ovary ovoid to depressed globose, 2-loculed; placenta 1, axile, projecting inward, 2-cleft. Stigmas 2, equal, suborbicular, undivided, or 1, terminal, disclike, undivided. Capsule straight in relation to pedicel, subglobose, globose, or depressed globose, shorter than calyx, dehiscing loculicidally to base; valves 2, or dehiscing irregularly. Seeds unappendaged.

* Six species: endemic to China.

1 Stigmas 2.   (2)
+ Stigma 1.   (3)
2 (1) Leaf blade margin denticulate; pistil ca. 1.4 cm; calyx glabrous outside; corolla ca. 2.5 cm; filaments 8-10 mm   1 Whytockia Chiritiflora
+ Leaf blade margin irregularly repand-serrate; pistil ca. 8 mm; calyx puberulent outside; corolla 1.7-2 cm; filaments 4-6 mm   2 Whytockia bijieensis
3 (1) Stems erect; petiole to 10 mm; staminode linear.   (4)
+ Stems ascending, basally procumbent; petiole to 2(-3) mm; staminode ovate or broadly ovate.   (5)
4 (3) Calyx 5-sect from base, tube absent, glabrescent to sparsely puberulent outside; corolla 1-1.8 cm; filaments 2-5 mm; anthers ca. 0.7 mm wide; pistil 3-6 mm; cymes axillary   3 Whytockia tsiangiana
+ Calyx 5-lobed, tube ca. 1.5 mm, puberulent outside; corolla 1.8-2.1 cm; filaments 4-6.5 mm; anthers ca. 1.2 mm wide; pistil ca. 9 mm; cymes pseudoterminal   4 Whytockia hekouensis
5 (3) Peduncle sparsely white or brown puberulent; leaf blade green or greenish, adaxially sparsely puberulent, apex acuminate; calyx 2.5-3.5 mm, glabrescent outside; cymes axillary; corolla white, outside glabrous; pistil ca. 2.2 mm; stigma orbicular   5 Whytockia sasakii
+ Peduncle purple pubescent and purple glandular; leaf blade purple abaxially, adaxially pilose, apex acute to narrowly obtuse; calyx 3.5-5.5 mm, purple pubescent and purple glandular pubescent outside; cymes pseudoterminal; corolla blue-purple, outside purple pubescent and purple glandular; pistil 5-6.5 mm; stigma elliptic to reniform-elliptic   6 Whytockia purpurascens

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