华南榆科植物数量分类的研究  

STUDY ON NUMERICAL TAXONOMY OF ULMACEAE PLANTS FROM SOUTH CHINA

作　　者：吴志敏[1] 黄少伟[1] 李秉滔[1] 罗富和[1] 

机构地区：[1]华南农业大学林学院

出　　处：《华南农业大学学报》1995年第3期51-55,共5页Journal of South China Agricultural University

摘　　要：将华南产的榆科植物划成３０个分类单位，以形态为主，兼顾解剖学、化学及孢粉学特征，列出４２项性状，对这些植物进行了数量分类。用最短距离法、类平均法等７种方法系统聚类。分类结果与传统形态分类不完全吻合。我们认为，取消柔毛糙叶树这一变种为宜；应恢复山油麻为种一级地位；滇糙叶树的分类位置有待进一步探讨。This paper deals with the numerical taxonomy of Ulmaceae plants all from south China. All the taxa were divided into 30 operational units(OTU).The 42 characters used for analysis included moophological,anatomical,chemical and pollen morphological characters.Seven methods of systematic clustering were used:shortest distance,longest distance,median distance,centre of gravity,square sum of devia-tions,class average and variable. The results were not very consistent with the classical taxonomy. The variety Aphananthe aspera var. pubescens should be concelled;the species Trema dielsiana H.-M.should be restored;the taxonomical position of the species Aphananthe cuspidata(B1.)Pl.should be studied further.

关 键 词：榆科 数量分类 华南 

分 类 号：Q949.737.2[生物学—植物学]