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FOC | Family List | FOC Vol. 16 | Asclepiadaceae

35. Dregea E. Meyer, Comm. Pl. Afr. Austr. 199. 1838.
[nom. cons.]

南山藤属 nan shan teng shu

Dregea yunnanensis

Credit: Harvard University Herbaria

Wattakaka Hasskarl.

Lianas. Inflorescences umbel-like clusters of cymules; peduncle and pedicels long and slender. Sepals overlapping, with 5 basal glands. Corolla rotate to shallowly bowl-shaped, deeply 5-divided; lobes overlapping to right. Corona lobes 5, ± spreading, thick fleshy, adnate to stamens, outer angle obtuse or rectangular, interior angle produced into an acute tooth incumbent to anthers. Anthers with membranous apical appendages; pollinia 2 per pollinarium, oblong, erect. Stigma head umbonate or thick conical. Follicles widely divergent, thick, finely longitudinally ribbed or corrugate, not winged [or winged]. Seeds comose.

About 12 species: southern Asia, Africa; four species in China.

1 Leaf blade oblong-elliptic, base cuneate; stems pubescent along 1 line; peduncle 7-13 cm   4 Dregea cuneifolia
+ Leaf blade broadly ovate, ovate-cordate, or suborbicular, base truncate to cordate; stems glabrous or uniformly pubescent; peduncle less than 6 cm.   (2)
2 (1) Leaf blade abaxially glabrescent, base subcordate or truncate; follicles longitudinally wrinkled-striate or irregularly ribbed   1 Dregea volubilis
+ Leaf blade abaxially pubescent or tomentose, base cordate; follicles smooth, or longitudinally sinuate-striate or transversely plicate-corrugate.   (3)
3 (2) Leaf blade ovate; corolla interior glabrous except for a ring of ciliate hairs at base of corona; follicles smooth   2 Dregea yunnanensis
+ Leaf blade ovate-cordate or suborbicular; corolla interior glabrous throughout; follicles longitudinally sinuate-striate or transversely plicate-corrugate   3 Dregea sinensis

Lower Taxa


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