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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: 403

     59. GERANIACEAE 牻牛兒苗科
    HUANG, TSENG-CHIENG

    Mostly herbs, rarely small trees. Leaves alternate, rarely opposite, simple or compound; stipules often paired. Flowers one to many, bisexual, actimorphic; calyx persistent, 4-5; petals 4-5; stamens 10 or more, the filaments more or less connate at base, the anthers versatile; carpels 5, with a long beak at the apex; ovules 1-2 in each locule, pendulous. Fruit usually a capsule, 3-5 lobed, each lobe dehiscing suddenly and spirally coiled.
    A family of 11 genera and about 650 species, widely distributed over the temperate and subtropical regions. One genus in Taiwan.

    1. GERANIUM L. 牻牛兒苗屬

    Herbs. Leaves ternately or palmately divided or 3-5 lobed, long-petiolate. Flowers 1-2, axillary or subterminal, actinomorphic, reddish-purple or yellow, long pedunculate; sepals 5, elliptic, with 5 nerves, caudate at apex, pilose; petals 5, alternate with nectary glands; stamens 10, perfect, 2 whorled; ovary 5-lobed, the ovules 2 in each locule. Seeds solitary in each carpel, the endosperm scanty or absent.
    About 250 species in the temperate regions and high mountains of the tropics. Six species in Taiwan.

    LITERATURE

    Fan, F. H. & Y. P. Yang 1987, A new Record of Geranium in Taiwan. in Quart. Journ. Chin. For. 20(1): 115-117.
    Peng, C. I. 1978, Some New Records for the flora of Taiwan. Bot. Bull. Acad. Sinica 19(1): 85.

    KEY TO SPECIES
    1. Leaves ternately divided; seeds glabrous; bracts 2… 5. G. robertianum
    1. Leaves simple, 3-5 divided; seeds hairy; bracts 2 or 4.
    2. Flower solitary; bracts 2.
    3. Stipules 4 at each node; flower yellow… 4. G. suzukii
    3. Stipules 2 at each node; flower pink… 2. G. hayatanum
    2. Flowers 2; bracts 4.
    4. Leaves compoundly divided; pedicels less than 1 cm long; flowers in compact cluster… 1. G. carolinianum
    4. Leaves simple divided; pedicels longer than 1 cm long; flowers in loose cluster.
    5. Stem hairy with glandular hair; flower purple; Leaves orbicular in outline… 3. G. nepalense ssp. thunbergii
    5. Stem glabrous or tomentose in the upper portion; flowers white; leaves triangular in outline… 6. G. wilfordii

    1. Geranium carolinianum L., Sp. Pl. 682. 1753; Peng in Bot. Bull. Acad. Sinica. 19(1): 85. 1978. 野老鸛草
    An erect herb, pilose, sometimes with glandular hair. Leaves reniform-orbicular, 2-5 cm broad, deeply 5-lobed, the segment acuminate; petioles 2-5 cm long; stipules 4 at each nodes; flowers 2, in compact