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46. Disporopsis Hance, J. Bot. 21: 278. 1883.

竹根七属 zhu gen qi shu

Liang Songyun (梁松筠 Liang Song-jun); Minoru N. Tamura

Aulisconema Hua.

Herbs perennial, rhizomatous, sympodial, terrestrial. Rhizome horizontally creeping, terete or moniliform, fleshy. Stem usually arching, rarely erect, simple, glabrous. Leaves cauline, lateral and pseudoterminal, usually alternate, rarely subopposite, shortly petiolate, glabrous. Inflorescences axillary, each a solitary flower or cluster of 2 to several flowers; bracts usually absent, rarely present. Flowers bisexual; pedicel articulate apically. Perianth campanulate; segments 6, imbricate, ± fleshy, proximally connate and forming a tube for up to 1/2 their length. Corona attached near apex of perianth tube, fleshy or membranous; lobes 6, alternate to or opposite perianth segments, apex often 2-cleft into lobelets, sometimes emarginate, rarely entire. Anthers 6, opposite perianth segments, attached at lobe sinus, lobelet sinus, or lobe apex of corona, dorsifixed, introrse. Ovary 3-loculed; ovules 4--6 per locule. Style short; stigma capitate to slightly 3-lobed. Fruit a berry, several seeded.

Six species: China, Laos, Philippines, Thailand, Vietnam; six species (four endemic) in China.

Hayata (Icon. Pl. Formos. 5: 230--233, 1915) interpreted the corona of Disporopsis as a product of fusion of dilated filaments.

1 Flowers in clusters of 5--10; corona lobes not exceeding anthers, fleshy; berries white; plants 60--100 cm tall; perianth 0.8--1 cm   1 Disporopsis longifolia
+ Flowers solitary or in clusters of 2 or 3; corona lobes exceeding anthers, membranous; berries purplish; plants 6--50(--90) cm tall; perianth (0.8--)1--2.2 cm.   (2)
2 (1) Rhizome moniliform; perianth 1.5--2.2 cm   6 Disporopsis fuscopicta
+ Rhizome terete; perianth (0.8--)1--1.5(--2) cm.   (3)
3 (2) Plants 6--10 cm tall; leaves (1 or)2(or 3); apex of corona lobes often entire, sometimes slightly emarginate   2 Disporopsis jinfushanensis
+ Plants (10--)20--40(--90) cm tall; leaves more than 3; apex of corona lobes ± 2-cleft.   (4)
4 (3) Leaf margin undulate   4 Disporopsis undulata
+ Leaf margin entire.   (5)
5 (4) Corona lobes usually opposite perianth segments, rarely alternate to them; leaf base rounded to obtuse; perianth white abaxially   5 Disporopsis pernyi
+ Corona lobes alternate to perianth segments; leaf base usually slightly cordate to truncate; perianth greenish yellow abaxially, ± spotted with lilac   3 Disporopsis aspersa

Lower Taxa


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