Additional observations on Dombeya kefaensis (Sterculiaceae) and the diversity of Dombeya in SW. Ethiopia
作者:I. Friis、S. Bidgood
DOI:10.1111/j.1756-1051.2001.tb00775.x
日期:2001.8
Dombeya kefaensis was first described in 1998 from flowering material collected in a mosaic of humid montane forest, evergreen bushland and deciduous woodland of the Kefa Region, SW. Ethiopia. Fruiting individuals, ripe fruits and seeds have now been observed on an additional gathering made near the type locality in late January. The new observations confirm that D. kefaensis is a distinct taxon closely related to D. buettneri K. Schum., recognised by characters of vegetative parts and inflorescence. This rare species has been observed between 1700 and 2200 m. a.s.l. for a distance of four kilometres in the transition zone between evergreen forest and deciduous woodland. The mountains and river valleys of S. and SW. Ethiopia with their mosaic of moist forests, highly fire‐prone wooded grasslands, evergreen bushlands and montane grasslands seem to have the highest diversity of Dombeya‐species on the African mainland, but the taxa are closely related.
栋比叶氏多贝亚(Dombeya kefaensis)于1998年首次描述,来自埃塞俄比亚西南部Kefa地区湿润山地森林、常绿灌木林和落叶林镶嵌区域采集的开花材料。最近,在距模式标本产地不远处的采集中,观察到结果个体、成熟果实和种子。新的观察结果证实,D. kefaensis是一个独特的分类单元,与D. buettneri K. Schum.密切相关,其特征体现在营养部位和花序上。这一罕见物种在海拔1700至2200米的常绿森林与落叶林过渡带中被观察到,该区域长约四公里。S.和SW.埃塞俄比亚的山地和河谷,因其湿润森林、火灾高发的木本草原、常绿灌木林和山地草原的镶嵌分布,似乎拥有非洲大陆上最丰富的多贝亚属物种多样性,但这些分类单元亲缘关系密切。