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''Nageia'' is a genus of conifers belonging to the podocarp family Podocarpaceae. 〔 Christopher N. Page. 1990. "Podocarpaceae" pages 332-346. In: Klaus Kubitzki (general editor); Karl U. Kramer and Peter S. Green (volume editors) ''The Families and Genera of Vascular Plants'' volume I. Springer-Verlag: Berlin;Heidelberg, Germany. ISBN 978-0-387-51794-0 〕 ''Nageia'' includes evergreen shrubs and trees, from one to 54 meters in height. A 2009 treatment of the genus recognized five species. 〔 James E. Eckenwalder. 2009. ''Conifers of the World''. Timber Press: Portland, OR, USA. ISBN 978-0-88192-974-4. 〕 Some authors consider ''Nageia formosensis'' to be a separate species from ''Nageia nagi'', thus recognizing six species. The podocarp genera have been reshuffled by various botanists. Most recently, several species formerly classed as ''Nageia'' were moved to the new genus ''Retrophyllum'', while ''Nageia falcata'' and ''Nageia mannii'' were moved to the new genus ''Afrocarpus''. The species of ''Nageia'' are distinguished from other genera in the Podocarpaceae by their broad, flat sub-opposite leaves with no midrib, superficially similar to those of the unrelated ''Agathis'' (Araucariaceae). ''Nageia'' is the only genus in Podocarpaceae with multi-veined leaves. The leaves vary from 5–20 cm long and 2–6 cm broad. The cones have several sterile and one (rarely two) fertile scales, each fertile scale with one seed. Unlike ''Podocarpus'', the scales do not become fleshy, but the seed coat develops into a drupe-like fleshy covering 1–2 cm in diameter, which attracts birds, which then disperse the seeds in their droppings.〔(Flora of China Vol. 4 Page 79 竹柏属 zhu bai shu ''Nageia'' Gaertner, Fruct. Sem. Pl. 1: 191. 1788. )〕 ''Nageia'' can be found in the tropical and subtropical moist broadleaf forests of Asia and Australasia, from Assam in eastern India across Southeast Asia to southern China and southern Japan, and across Malesia, from the Malay peninsula across Indonesia to New Guinea and New Britain.〔 An outpost of ''N. wallichiana'' is found in the South Western Ghats montane rain forests of southern India, where it is thought to be a relatively recent colonist in biogeographical terms. ''Nageia'', like many podocarps, can usually be found scattered throughout the forest mixed with other trees, and is rarely if ever found growing in pure stands. The wood is yellowish, typical of podocarps, and a few species are locally important for lumber. ;species〔 # ''Nageia fleuryi'' - S China, E Indochina # ''Nageia maxima'' - Sarawak # ''Nageia motleyi'' - S Thailand, W Malaysia, Borneo, Sumatra # ''Nageia nagi'' - S China (incl. Taiwan + Hainan), Kyushu in Japan # ''Nageia wallichiana'' - SW India; widespread from Assam + Yunnan to Maluku ;formerly included〔 moved to other genera: ''Acmopyle Afrocarpus Amentotaxus Cephalotaxus Dacrycarpus Dacrydium Falcatifolium Madhuca Parasitaxus Podocarpus Prumnopitys Putranjiva'' (Putranjivaceae) ''Retrophyllum Sundacarpus'' ==References== 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「Nageia」の詳細全文を読む スポンサード リンク
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