Pittosporaceae

海桐科

APG 4

Pittosporaceae 海桐科

特徵描述

屬列表

標本列表

特徵描述

作者

LI, HUI-LIN and HUANG, TSENG-CHIENG

型態特徵

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.

屬

Nine genera and about 240 species in the Old World, one genus in Taiwan.

參考文獻

LI, HUI-LIN and HUANG, TSENG-CHIENG, Flora of Taiwan, second edition 3: 65. 1993. (Fl. Taiwan 2nd edit.)
Carlquist, S., Allertonia 2(7): 355-392. 1981.
Chern, L. C. & T. C. Huang, Taiwania 31: 41-64. 1986.
Chern, L. C. & T. C. Huang, The science reports of the Tohoku Imperial University. Fourth Series, Biology 39: 149-169. 1988. (Sci. Rep. Tohoku Univ. 4. Biol.)
Kobayashi, S., Journal of botany, British and foreign 57(3): 70-80. 1982. (J. Bot.)

Pittosporum 海桐屬

作者

LI, HUI-LIN and HUANG, TSENG-CHIENG

型態特徵

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.