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绣球亚科的脉序研究
郝刚; 胡启明;
中国科学院华南植物研究所
摘要:
本文对绣球亚科全部9个属中选取45个种或变种作了叶脉序的研究。绣球亚科除黄山梅属外,大体呈曲行羽状脉。叉叶蓝属,蛛网萼属和草绣球属同具真曲行羽状脉和相似的高级脉序;赤壁草属和冠盖藤属表现出明显的环结曲行羽状脉式样;钻地风属多呈现分支曲行羽状脉式样;常山属和绣球属包含多种过渡类型,与其它属密切相连。黄山梅属脉序为独特的羽状达缘型式样,明显表现出向掌状脉的过渡,与其它属不同。脉序研究支持Takhtajan系统把黄山梅属提升为亚科的处理,同时又表明从脉序性状来看,绣球亚科各属之间性状彼此重叠,没有十分明确的界限。
关键词:  绣球亚科  叶脉序  黄山梅属  
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