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38. Urceola Roxburgh, Asiat. Res. 5: 169. 1799.
[nom. cons.]
水壶藤属 shui hu teng shu
Chunechites Tsiang; Ecdysanthera Hooker & Arnott; Parabarium Pierre in Spire; Xylinabariopsis Lý.
Lianas woody, latex white. Leaves opposite. Cymes paniculate, terminal or axillary, 3-branched. Flowers small. Calyx deeply divided, with basal glands inside. Corolla suburceolate, throat without scales; lobes short, overlapping to right. Stamens included, inserted at base of corolla tube; filaments short; anthers narrowly oblong, sagittate, connivent, adherent to pistil head, cells spurred at base; disc ringlike, entire or 5-lobed. Ovaries 2, longer than disc, villous at apex; ovules numerous in each locule. Style short; pistil head ovoid, conical or oblong, apex 2-cleft. Follicles cylindric or narrowly ellipsoid, spreading, thick, acuminate. Seeds numerous, oblong or linear, compressed, pubescent, coma long; endosperm scanty; cotyledons oblong or ovate, leaflike, radicle short.
Fifteen species: SE Asia, eight species in China.
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| 1 |
Leaf blade pubescent abaxially, denser along veins. |
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(2) |
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Leaf blade glabrous, sometime with hairy domatia in axils of lateral veins. |
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(3) |
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| 2 (1) |
Leaf blade very narrowly elliptic, lateral veins 5-7 pairs; corolla glabrous outside, lobe margin 1-toothed; fruit linear or nearly so, ca. 0.5 cm in diam. |
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1 Urceola xylinabariopsoides |
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Leaf blade ovate or narrowly elliptic, lateral veins ca. 10 pairs; corolla pubescent outside, lobe margin entire; fruit narrowly ovoid, 1.5-2 cm in diam. |
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2 Urceola huaitingii |
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| 3 (1) |
Petiole puberulent; corolla lobes 1-toothed near base; fruit ovoid |
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3 Urceola micrantha |
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Petiole glabrous; corolla lobes entire; fruit sublinear or oblong, if ovoid then long beaked. |
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(4) |
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| 4 (3) |
Leaf blade papillate abaxially, petiole 3-5 mm |
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4 Urceola quintaretii |
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Leaf blade not papillate abaxially, petiole 6-25 mm. |
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(5) |
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| 5 (4) |
Leaf blade narrowly oblong, 11-18 cm; fruit ca. 2 cm in diam. |
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5 Urceola tournieri |
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Leaf blade broadly elliptic, elliptic, or narrowly ovate, 3-10 cm; fruit 0.4-1 cm in diam. |
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(6) |
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| 6 (5) |
Inflorescences glabrous |
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8 Urceola linearicarpa |
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Inflorescences pubescent or puberulent. |
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(7) |
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| 7 (6) |
Sepals ca. 4 mm; corolla lobes ± symmetrical, slightly longer than tube; follicles to 15 cm, terete, not stipitate |
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6 Urceola rosea |
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Sepals ca. 0.8 mm; corolla lobes strongly asymmetrical, ca. 2 longer than tube; follicles 5-7 cm, strongly stipitate |
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7 Urceola napeensis |
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Lower Taxa
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