翻訳と辞書 |
Phyllocladus : ウィキペディア英語版 | Phyllocladus
''Phyllocladus'', the celery pines, is a small genus of conifers, now usually treated in the family Podocarpaceae.〔James E. Eckenwalder. 2009. ''Conifers of the World''. Timber Press: Portland, OR, USA. ISBN 978-0-88192-974-4.〕'' ''Species occur mainly in New Zealand, Tasmania and Malesia in the southern hemisphere, though ''P. hypophyllus ''ranges into the Philippines, a short way north of the equator. ==Characteristics== They are small to medium-size trees, reaching 10–30 m tall, or sometimes small shrubs. The main structural shoots are green for 2–3 years, then turn brown as the bark thickens. The leaves are sparse, tiny, scale-like, 2–3 mm long, and only green (photosynthetic) for a short time, soon turning brown. Most photosynthesis is performed by highly modified, leaf-like short shoots called phylloclades; these develop in the axils of the scale leaves, and are simple or compound (depending on species). Simple phylloclades are rhombic, 2–5 cm long, and compound phylloclades are up to 20 cm long and subdivided into 5-15 'leaflet'-like phylloclades 1–3 cm long. The seed cones are berry-like, similar to those of several other Podocarpaceae genera, notably ''Halocarpus'' and ''Prumnopitys'', with a fleshy white aril; the seeds are dispersed by birds, which digest the soft fleshy aril as they pass the hard seeds in their droppings.
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「Phyllocladus」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.
|
|