广西裸子植物(英文)

GYMNOSPERMAE OF GUANGXI,SOUTH CHINA

广西本土生长的裸子植物共43种,包含苏铁科3种,三尖杉科4种,红豆杉科4种,罗汉松科6种,松科17种,杉科1种,柏科3种,和买麻藤科5种。虽然它们在本区分布较广,但其种类多集中于北部和中部属酸性土且气候较凉的山脉上。 油杉有数种生长在石灰岩石山上,它们比低地的松树之外的裸子植物较为耐旱。少数种类稀少且分布局限,少数为特有。 经作者研究,广西裸子植物的学名有些需要修改:Cephalotaxus hainanensis和C.griffithii应归并于C.mannii;Podocarpus imbricatus需改为DacrycarPus imbricatus,Podocarpusfteuryi或Deeusocarpus fleuryi改为Nageia fteuryi,Podocarpus nagi或Decuso-corpus nagi改为Nageia nagi,过去误定为Podocarpus brevifolius或P.wangii应改为Podocarpus pilgeri;Kereleeria pubescens应归并于K.davidiana,K.hainanensis归并于K.evelyniana,K.eyelolepis和K.oblonga归并于K.fortunei;Tsuga longibra-cteata改为Nothotsuga longibracteata;Cupressus funebris改为Chamaecyparis fune-bris,不同意把Pinus Kwangtungensis改为p.wangii var.kwangtungensis等。

43 species of Gymnospermae are indigenous to Guangxi, comprising Cycadaceae (3), Cephalotaxaceae (4), Taxaceae (4), Podocarpaceae (6), Pinaceae (17), Taxodiaceae (1), Cupressaceae (3) and Gnetaceae (5). Although the group is widespread in the province members are concentrated on the mountain ranges of the north and centre where there are acidic rocks and the climate is cooler. Several species of Keteleeria do grow on the limestone rock which covers over half the surface and they also tolerate greater dryness than other gymnosperms except the lowland Pinus species. A few species are very rare and localised, but there is litt e endemism because Guangxi has few natural boundaries.