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Plants of Taiwan

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    台灣植物誌 第二版  Flora of Taiwan, 2nd edition    Vol. 3

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    台灣植物誌第二版  Flora of Taiwan, 2nd edition  3: 696

     80. VITACEAE 葡萄科
    LU, FU- YUAN

    Vines climbing by means of tendrils. Leaves alternate or the lower sometimes opposite, simple or absent. Flowers regular, perfect or unisexual, small, cymose, umbellately paniculately or racemosely arranged, leaf opposed; calyx small, entire or 4-5 toothed or lobed; petals 4-5, free or united, valvate, caducous; stamens 4 or 5, opposite to the petals, inserted at the base of disc or between its lobes, anthers free or connate, extrorse, 2-locular, opening lengthwise; disc intra-staminal, mostly very distinct, free or connate with stamens or ovary; ovary 2-6-celled, style short or none, stigma capitate or discoid; ovules 1-2 in each cell. Fruit baccate, 1-6-celled, watery; seeds with small embryo and copious endosperm.
    Genera 12 or more, mostly in tropical and subtropical regions; six in Taiwan.

    KEY TO GENERA
    1. Inflorescence paniculate; petals cohering at apex and falling as a whole at anthesis… 6. Vitis
    1. Inflorescence usually cymose; petals free, expanding at anthesis.
    2. Flowers 4-merous.
    3. Inflorescence axillary; fruit with 2-4 seeds each.
    4. Stigma subsessile, capitate, slightly 4-lobed… 5. Tetrastigma
    4. Stigma small; style filiform, slender… 2. Cayratia
    3. Inflorescence opposite to the leaf; fruit with 1-2 seeds each… 3. Cissus
    2. Flowers 5-merous.
    5. Tendrils with dise-like adhesive tips; discs adnate to ovary, not distinct… 4. Parthenocissus
    5. Tendrils without dise-like adhesive tips; discs cupular, distinct from ovary… 1. Ampelopsis

    1. AMPELOPSIS Mich. 山葡萄屬

    Deciduous shrubs, climbing by tendrils; branches more or less nodose, tendrils twining, without disc-like tips, opposite to the leaves. Leaves alternate, simple or compound. Flowers perfect, small, greenish, in long-peduncled dichotomous cymes opposite to the leaves, or terminal, 5-merous, rarely 4-merous; calyx indistinct, subentire; petals expanding; disc cupular, with its base adhering to the ovary; stamens short; ovary 2-celled, entire or crenulate on the margin, style slender, subulate, stigma undivided; ovules 2 in each cell. Fruit a 1-4-seeded berry; seeds ovoid, smooth, with a very short beak.
    About 20 species in N. America, C. and E. Asia; two species in Taiwan.

    KEY TO SPECIES AND VARIETIES
    1. Leaves simple… 1. A. brevipedunculata
    2. Young stems densely pubescent; leaves pilose on both surfaces… 1a. A. brevipedunculata var. ciliata
    2. Young stems glabrous or glabrate; leaves glabrous above… 1b. A. brevipedunculata var. hancei
    1. Leaves simply pinnate or bipinnate… 2. A. cantoniensis
    3. Leaves smaller, 10-20 cm long, more or less glaucous beneath… 2a. A. cantoniensis var. cantoniensis
    3. Leaves larger, 20-30 cm long, pale reticulate beneath… 2b. A. cantoniensis var. lecoides

    1. Ampelopsis brevipedunculata (Maxim.) Traut. in Acta. Hort. Petrop. 8: 176. 1883; Lu in Fl. Taiwan 3: 665. 1977. 山葡萄