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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: 65

     54. PITTOSPORACEAE 海桐科
    LI, HUI-LIN and HUANG, TSENG-CHIENG

    Erect or climbing trees or shrubs. Leaves alternate or subverticillate, entire, very rarely toothed, estipulate. Flowers usually bisexual, regular, solitary or in corymbs. Sepals 4-5, free or connate at the base, imbricate. Petals 4-5, hypogynous, imbricate. Stamens 5, opposite the sepals, free or more or less connate; anthers versatile, 2-celled, dehiscing longitudinally or by pores. Ovary superior, perfectly or imperfectly 2-4-celled, the placentae parietal or axile on mature flower; style simple, the stigma terminal, 2-5-lobed; ovules numerous, anatropous. Fruit capsular, indehiscent. Seeds usually many; endosperm copious; embryo small.
    Nine genera and about 240 species in the Old World, one genus in Taiwan.

    LITERATURE

    1. Carlquist, S. 1981. Wood anatomy of Pittosporaceae. Allertonia 2(7): 355-392.
    2. Chern, L. C. & T. C. Huang 1986. Anatomical study of leaf and stem of Formosan Pittosporum as an ecological implication. Taiwania 31: 41-64; 1988. Floral anatomy of Formosan Pittosporum Sci. Rep. Tohoku Univ. 4th ser. (Biology) 39: 149-169.
    3. Kobayashi, S. 1982. A taxonomical note on Pittosporum tobira and its allied species. Journ. Bot. 57(3): 70-80.

    1. PITTOSPORUM Banks 海桐屬

    Erect shrubs or pseudoepiphytic trees. Leaves entire or sinuate-dentate, sometimes sub-verticillate at the apex of the branches. Flowers in terminal panicles or corymbs; sometimes solitary or few, terminal, axillary or lateral; sepals 4-5, free or connate below; petals 4-5, usually connivent or connate at the base; stamens 5, erect, the filaments subulate the anthers introrse, ovate-oblong, 2-celled, dehiscing by slits; ovary sessile or shortly stipitate, incompletely 2-4-celled; style short; ovules 2 or more on each placenta. Capsule 1-celled, woody, 2- rarely 3-4-valved, the valves placentiferous in the middle. Seeds smooth, imbedded in pulp.
    Over 200 species in subtropical Asia, Australia and in the Pacific Islands; five species and one variety in Taiwan.

    KEY TO SPECIES AND VARIETIES
    1. Flowers few, solitary or corymb, in axile… 2. P. illicioides
    2. Leaves lanceolate, 1.5-4 cm broad… 2a. P. illicioides var. illicioides
    2. Leaves narrowly lanceolate, 0.6-2 cm broad… 2b. P. illicioides var. angustifolium
    1. Flowers panicles.
    3. Leaves acuminate at apex; capsule small, less than 1 cm across.
    4. Leaves large, 8-22 cm long; capsule small, about 5-7 mm across… 1. P. daphniphylloides
    4. Leaves smaller, 4-11 cm long; capsule larger, 7-8 mm across… 4. P. pentandrum
    3. Leaves obtuse to rounded at apex; capsule larger, 1.5 cm or more cm across.
    5. Leaves 4.5-12 cm long and 2.5-4.5 cm broad; capsule about 1.5 cm across… 5. P. tobira
    5. Leaves larger, 6-17 cm long, 2-7 cm broad; capsule 1.4-2 cm across… 3. P. moluccanum

    1. Pittosporum daphniphylloides Hayata in Journ. Coll. Sci. Univ. Tokyo 30(1): 34. 1911 (Mat. Fl. Form.); Li in Fl. Taiwan 3: 53. 1977 (Holotype: Kawakami & Mori s. n. Dec. 1906, TI!)