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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: 986

     106. ARALIACEAE 五加科
    OHASHI, HIROYOSHI
    Aralia by OHASHI, HIROYOSHI and LU, SHENG-YOU

    Shrubs, trees, or rarely perennial herbs, often prickly, sometimes scandent. Leaves alternate, petiolate, simple or compound; stipules present or absent. Inflorescence terminal, usually umbels or heads, sometimes racemose or spicate, the umbels or heads solitary, racemose, corymbose, paniculate or umbellate. Bracts usually small and deciduous. Flowers regular, mostly small, bisexual, polygamous or dioecious. Calyx-tube adnate to the ovary, lobes small or reduced to a rim, or rarely absent. Petals 5-10, valvate or imbricate, usually free. Stamens 5-10, alternate with and inserted on the petals at the edge of the disc, the anthers versatile, introrse, the locules 2, longitudinally dehiscent. Disc epigynous, fleshy, annular. Ovary inferior or half inferior, 1-15 celled, the styles as many as the cells, free or connate; ovules solitary, anatropous. Fruit baccate or drupaceous; seeds solitary in pyrenes, the embryo small, the endosperm uniform or ruminated. X= 11, 12.
    About 60 genera and more than 800 species, in the tropical and temperate regions of both hemispheres. Ten genera in Taiwan.

    LITERATURE

    Hoo, G. & Tseng, C. J. 1978. Araliaceae. In Fl. Reipub. Popul. Sin. 54.
    Philipson, W. R. 1979. Araliaceae I. In Fl. Malesiana I, 9: 1-105.

    KEY TO GENERA
    1. Leaves simple or pinnately or palmately lobed.
    2. Leaves not lobed or only shallowly and irregularly lobed, or if some deeply lobed, the lobes 2-5 only.
    3. Leaves mostly unlobed, or if lobed, the lobes deep and few, glabrous or sparsely pubescent.
    4. Erect shrubs; leaves with characteristic transluscent glands… 2. Dendropanax
    4. Woody vines climbing by aerial rootlets; leaves without glands… 5. Hedera
    3. Leaves shallowly lobed or toothed, densely pubescent… 9. Sinopanax
    2. All leaves distinctly 5-12-palmately lobed.
    3. Lobes of leaves 7-12… 10. Tetrapanax
    3. Lobes of leaves 5-7.
    4. Leaves lobed to more than half the length… 4. Fatsia
    4. Leaves lobed to less than half the length… 6. Osmoxylon
    1. Leaves compound.
    2. Leaves digitately compound; petals valvate.
    3. Leaflets 5-7 or more; plants unarmed; styles united… 8. Schefflera
    3. Leaflets 3; plants prickly; styles distinct… 3. Eleutherococcus
    2. Leaves pinnately compound or decompound; petals imbricate.
    3. Erect, prickly plants; leaves 1-3-pinnate; styles distinct… 1. Aralia
    3. Scandent, unarmed plants; leaves 1-pinnate; styles more or less united… 7. Pentapanax

    1. ARALIA L. 刺楤屬
    OHASHI, HIROYOSHI and LU, SHENG-YOU

    Herbs, shrubs or small trees, glabrous or pubescent, often prickly. Leaves pinnate to thrice-pinnate,