特徵描述
作者
YANG, KUOH-CHENG and HUANG, TSENG-CHIENG
型態特徵
Dioecious shrubs to trees. Leaves deciduous, simple, usually alternate, with deciduous stipules. Aments ascending or pendulous, developing before or with the leaves in early spring, solitary. Flowers simple, lacking a perianth, each subtended by a bract. Gland as protuberant nectary or cup-shaped disc. Stamens 2-30, free or connate. Ovary superior, bicarpellate, unilocular, stipitate or sessile; style present or absent; stigmas 2, entire or bifid, placentae parietal or basal. Capsules bivalvate. Seeds small; endosperm absent; embryo straight.
屬
Three genera, chiefly north temperate regions; one native to Taiwan.
參考文獻
Salix 柳屬
作者
YANG, KUOH-CHENG and HUANG, TSENG-CHIENG
型態特徵
Dioecious scandent or erect shrubs to trees with sympodial branching. Bud scales single fused into a cap or with free overlapping margins. Leaves deciduous, simple, alternate, margin glandular-serrulate to entire, petiolate or sessile, stipulate. Aments ascending to spreading, developing before (precocious), with (coetaneous), or rarely, after (serotinous) the leaves, solitary, sessile, or terminating a short, leafy branchlet. Bract with an entire apex. Nectary usually a single, short, adaxial protuberance, or partly surrounding the stipule in female flowers, sometimes with a second abaxial gland or several lateral glands connte as a ring. Stamens 2-, 3-7(-8); filaments free, sometimes connate below. Pistils bicarpellate, unilocular, stipitate or sessile, style 1, stigmas 2, entire or bifid, placentae parietal, ovules 2-12 per carpel. Capsules bivalvate, valves recurved. Seeds green, surrounded by an arillate coma.
參考文獻
- YANG, KUOH-CHENG and HUANG, TSENG-CHIENG, Flora of Taiwan, second edition 2: 29. 1996. (Fl. Taiwan 2nd edit.)
- Ying, S. S., Memoirs of the College of Agriculture, National Taiwan University 27(2): 29-50. 1987. (Mem. Coll. Agr. Natl. Taiwan Univ.)
- Yang, K. C., MS thesis, Inst. Bot. Nat. Taiwan Univ. 1-107. 1988.
- Yang, K. C. & T. C. Huang, Taiwania 41(1): 1-6. 1996.
