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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: 640

     75. CELASTRACEAE 衛矛科
    LU, SHENG-YOU and YANG, YUEN-PO

    Trees or shrubs, erect or scandent; stems glabrous or sometimes thorny. Leaves opposite or alternate, simple, membranous or chartaceous, penninerved, usually crenate, rarely entire; stipules minute, simple, caducous, or none. Inflorescence axillary and/or terminal, racemose, cymose, thyrsoid, paniculate, fasciculate, or rarely a solitary flower, usually bracteate. Flowers mostly perfect, actinomorphic, usually greenish; sepals 4-5, free or united at the base; petals 4-5, free, inserted below a disc; stamens mostly 4-5, aletrnate with the petals, free, situated on or the edge of or beneath the disc, the anthers mostly 2-celled, usually longitudinally or laterally dehiscent; ovary 2-5-locular, entirely or partly surrounded by the disc, usually glabrous, sometimes pubescent, usually 2-5-celled; style short, or obscure, or lacking, the stigma capitate or lobed; ovules 1-2 or rarely more in each locule. Fruit a dehiscent capsule, rarely a berry or a samara; seeds erect or pendulous, usually arillate, the embryo with large foliaceous cotyledons.
    About 94 genera with about 1,300 species in the tropical and temperate regions, six genera in Taiwan.

    KEY TO GENERA
    1. Fruit dehiscent.
    2. Leaves alternate.
    3. Scandent shrubs; inflorescence terminal or axillary; flowers hermaphroditic or unisexual; disc lamellate… 1. Celastrus
    3. Erect shrub; inflorescence axillary; flowers hermaphroditic; disc thick… 3. Maytenus
    2. Leaves opposite.
    4. Ovary 2 locular; fruit 1 locular… 4. Microtropis
    4. Ovary 4-5-locular; fruit 3-5-locular… 2. Euonymus
    1. Fruit indehiscent.
    5. Fruit a berry; seeds 4… 5. Perrottetia
    5. Fruit a samara; seed 1… 6. Tripterygium

    1. CELASTRUS L. 南藤蛇屬

    Deciduous, rarely evergreen shrubs, usually scandent. Leaves alternate, petiolate, entire or serrate, the stipules small. Flowers solitary or in cymes or panicles, axillary or terminal, hermaphroditic, sometimes unisexual; calyx 5-lobed; petals 5, inserted under the disc; stamens 5, with short filaments; disc cupular, concave, entire or crenate; ovary superior, 3-4-celled, the style short, the stigma 3-4-lobed; ovules 2 in each cell. Fruit a capsule, usually yellowish, dehiscent into 3-4 valves; seeds arillate, the endosperm copious.
    About 31 species in tropical Asia, Australia and North America, 4 species in Taiwan.

    KEY TO SPECIES
    1. Leaves oblong orbicular or orbicular; inflorescence pubescent… 2. C. kusanoi
    1. Leaves elliptic oblong or obovate; inflorescence glabrous.
    2. Leaf apex obtuse or emarginate, margins remotely crenulate… 3. C. paniculatus
    2. Leaf apex acuminate or cuspidate acute; margins remotely serrate.
    3. Leaf apex cuspidate acute; inflorescence a compound cyme… 1. C. hindsii
    3. Leaf apex acuminate; inflorescence a fascicle… 4. C. punctatus

    1. Celastrus hindsii Benth. in Hook. Kew Journ. Bot. 3: 334. 1851; Li in Fl. Taiwan 3: 620. 1977. 南華南蛇藤 Pl.330