| 翻訳と辞書 |
Pandanaceae
Pandanaceae is a family of flowering plants native to the tropics and subtropics of the Old World, from West Africa through the Pacific. It contains over 1000 species〔(Pandanaceae—The Plant List )〕 in five genera,〔(NCBI Taxonomy Browser )〕 of which the type genus, ''Pandanus'', is the most important. It is an ancient family dating from the early to mid-Cretaceous.〔(ingentaconnect: Recognition of ''Martellidendron'', a new genus of ''Pandanaceae'', and its biogeographic implications )〕
== Characteristics ==
Pandanaceae includes trees, shrubs, lianas, vines, epiphytes, and perennial herbs.〔(eFloras.org: Pandanaceae in Monocot families (USDA) )〕 Stems may be simple or bifurcately branched, and may have aerial prop roots. The stems bear prominent leaf scars. The leaves are very long and narrow, sheathing, simple, undivided, with parallel veins; the leaf margins and abaxial midribs are often prickly.〔(eFloras.org: Pandanaceae in Flora of China )〕
The plants are dioecious. The inflorescences are terminally borne racemes, spikes or umbels, with subtended spathes, which may be brightly colored. The flowers are minute and lack perianths. Male flowers contain numerous stamens with free or fused filaments. Female flowers have a superior ovary, usually of many carpels in a ring, but may be reduced to a row of carpels or a single carpel. Fruits are berries or drupes,〔 usually multiple.〔(L. Watson and M. J. Dallwitz. The families of flowering plants: Pandanaceae )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Pandanaceae」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|