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FOC | Family List | FOC Vol. 16 | Apocynaceae

40. Ichnocarpus R. Brown, Mem. Wern. Nat. Hist. Soc. 1: 61. 1811.
[nom. cons.]

腰骨藤属 yao gu teng shu

Lamechites Markgraf; Micrechites Miquel; Otopetalum Miquel; Springia Heurck & Müller Argoviensis.

Plants scramblers or woody lianas, with latex. Leaves opposite. Inflorescences cymose, terminal and/or axillary. Flowers small. Calyx with basal glands inside, lobes free. Corolla white, yellowish, or red, salverform; tube widened near base, throat hairy; lobes oblong, falcate, overlapping to right, in bud with inflexed distal halves. Stamens included, inserted at or below middle of corolla tube; filaments very short; anthers sagittate, adherent to pistil head, cells spurred at base; disc entire, 5-crenate or 5-denate, or deeply divided into 5 erect segments. Ovaries adnate basally to disc, pubescent; ovules numerous. Pistil head ovoid or cup-shaped. Follicles 2, spreading or divaricate. Seeds numerous, linear, compressed, not or hardly beaked, comose; endosperm copious; cotyledons long, flat, radicle superior.

Twelve species: SE Asia, N Australia, Pacific Islands; four species in China.

1 Disc lobes free and narrow, longer than ovary; anthers appearing elliptic   1 Ichnocarpus frutescens
+ Disc entire, 5-lobed or dentate, shorter than ovary or, rarely, of 5 wide separate lobes shorter than ovary; anthers narrow triangular.   (2)
2 (1) Ovary ± glabrous; corolla red; stems, underside of leaves, and inflorescences densely rufous tomentose   2 Ichnocarpus jacquetii
+ Ovary densely pubescent; corolla white, cream, or yellow; indumentum variable.   (3)
3 (2) Lateral leaf veins ca. 25 pairs; corolla yellow, tube 7-8 mm   3 Ichnocarpus malipoensis
+ Lateral leaf veins 10-15 pairs; corolla white, tube ca. 3 mm   4 Ichnocarpus polyanthus

Lower Taxa


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