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FOC | Family List | FOC Vol. 19 | Rubiaceae | Leptodermis

9. Leptodermis gracilis C. E. C. Fischer, Bull. Misc. Inform. Kew. 1940: 293. 1941.

柔枝野丁香 rou zhi ye ding xiang

Shrubs, 1.5-2 m tall; branches slender, usually nodding, grayish white, pubescent. Leaves opposite; petiole 2-6 mm; blade papery, silver-gray adaxially, slightly pallid abaxially, elliptic to lanceolate, 1.4-3.5 × 5-13 mm, adaxially glabrous except sometimes hispid on midrib and margin, abaxially usually hairy on midrib and lateral veins, margins hispidulous ciliate, base cuneate, ± decurrent, apex acute; stipules interpetiolar, broad at base, long cuspidate upward, ca. 3 mm, puberulent, ciliate. Cymes terminal and axillary on upper portion of branchlets; peduncle ca. 3.5 mm; flowers 3 fascicled, sessile; bracts narrowly elliptic-lanceolate, ca. 4 mm, ciliate, acute; bracteoles 2, connate into a sheath ca. 2.5 mm, free portion broadly ovate, 1-1.5 mm, 3-nerved, apiculate. Calyx tube turbinate, 5-ridged, 1.2-1.5 mm; lobes 5, oblong, ca. 1.2 mm, ciliate, rounded or subtruncate. Corolla white or purple, narrowly funnelform; tube slender, ca. 8 mm, pilose above base inside; lobes 5, gladiate, ca. 1.5 mm, subacute. Stamens 5, inserted in corolla tube throat; anthers sessile, linear, ca. 1.5 mm, included. Style slender; stigmas 3, filiform, 1-1.5 mm, papillose, slightly exserted. Capsules linear-oblong, ca. 5 mm, dehiscent in 5 valves; seeds not seen.

● Thickets, hill slopes; 1000-2700 m. NC Sichuan, SE Xizang.

1 Flowers smaller; corolla ca. 9.5 mm.   9a var. gracilis
+ Flowers larger; corolla ca. 16 mm.   9b var. longiflora

Lower Taxa


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