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FOC | Family List | FOC Vol. 19 | Caprifoliaceae

1. Triosteum Linnaeus, Sp. Pl. 1: 176. 1753.

莛子藨属 ting zi biao shu

Triosteum himalayanum

Credit: Harvard University Herbaria

Triosteospermum Miller.

Herbs, perennial, with underground rhizomes. Stem erect, with white pith becoming hollow. Leaves simple, opposite, obovate,

entire, undulate to deeply pinnatifid. Inflorescence of sessile 6-flowered whorls; bracts and bracteoles lanceolate, shorter than flowers. Calyx 5-lobed, persistent. Corolla yellow-green, yellow, or purple; lobes 5, imbricate, bilabiate, upper lip 4-lobed, lower lip entire and recurved at anthesis. Nectary of compact glandular hairs, forming a bulge at base of corolla tube. Stamens 5, inserted in corolla tube; anthers introrse. Ovary 3-5-locular; ovule 1 per locule sometimes aborted, pendulous; style filiform; stigmas discoid, 3-5-lobed. Fruit a drupe, subglobose to pyriform, ± fleshy; pyrenes 2-4, black, with a thick stony endocarp, sometimes ribbed; endosperm fleshy, embryo small.

About six species: C and E Asia, North America; three species in China.

1 Inflorescence in axils of leaves, terminal axis vegetative; sepals well developed to 10 mm; drupes green, pyrenes ribbed.   3 T. sinuatum
+ Inflorescence terminal, axillary buds vegetative; sepals minute to 1 mm; drupes white to red, pyrenes not ribbed   (2)
2 (1) Leaves broadly perfoliate, usually entire.   1 T. himalayanum
+ Leaves not perfoliate, usually pinnatifid.   2 T. pinnatifidum

Lower Taxa


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