Symplocaceae

灰木科

APG 4

Symplocaceae 灰木科

特徵描述

屬列表

標本列表

特徵描述

作者

NAGAMASU, Hidetoshi

型態特徵

Evergreen or deciduous shrubs or trees. Leaves simple, alternate, exstipulate. Inflorescences axillary or terminal racemes, spikes, panicles, fascicles, condensed clusters, or rarely flowers solitary. Flowers with a bract and 2 bracteoles, actinomorphic, bisexual or plants rarely polygamous or dioecious; calyx lobes (3–)5, imbricate or valvate; corolla shallowly or deeply (3–)5(–11)-lobed, lobes imbricate; stamens 4 to many in 1–4 series, inserted on corolla, free, pentadelphous or monadelphous; anthers introrse, bilocular, longitudinally dehiscent; ovary inferior or partially inferior, 2–5-locular; style single, slender, base surrounded by a nectary disk; ovules 2–4 in each locule, pendulous on axile placentae, anatropous, epitropous or amphitropous, unitegmic, tenuinucellate. Pollen grains in monads, 2- or 3-colporate or 3-porate, oblate to oblate-spheroidal. Fruits monopyrenous drupes, usually crowned by persistent calyx lobes; seeds usually solitary in each developed cell, straight or curved, with copious endosperm; embryo straight or curved, with very short cotyledons. Seedlings epigeal, phanerocotylar; cotyledons 2, linear, slightly thick; hypocotyl terete, slender, usually densely papillate; leaves all spirally arranged. x = 11(–14).

屬

One genus with ca. 300–400 species, in moist tropical, subtropical and temperate regions of Asia, Oceania and America; 26 species (8 endemic) with one variety in Taiwan.

參考文獻

Brand, A., Das Pflanzenreich Heft 6: 100. 1901.
Handel-Mazzetti, H. & E. Peter-Stibal., 62-B: 1-42. 1943.
Nooteboom, H. P., Universitaire Pers Leiden Leiden Bot. Ser. 1: 1-336. 1975.
NAGAMASU, Hidetoshi, Flora of Taiwan, second edition 4: 101. 1998. (Fl. Taiwan 2nd edit.)