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Bulletin of Botanical Research ›› 1989, Vol. 9 ›› Issue (1): 125-138.

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TAXONOMY OF CORNUS SCHINDLERI COMPLEX BASED ON QUANTITATIVE ANALYSIS OF SOME CHARACTERS

Xiang Qiu-yun   

  1. Institute of Botany, Academia Sinica, Beijing
  • Online:1989-03-15 Published:2016-06-13

Abstract: The Cornus schindleri Wangerin complex in Cornus subgen. Kraniopsis Raf.consists of several taxa namely C. schindleri Wanger. (1907), C. mombeigii Hemsl. (1909), C.poliophylla Schneid. et Wanger. (1909), C.mombeigii Hemsl.subsp. crassa & subsp. populifolia Fang et W. K. Hu (1980), C. poliophylla Schneid. et Wanger. var. praelonga Fang et W. K. Hu (1981), C. ixienensis Fang et W. K. Hu (1981), C. malifolia Fang et W. K. Hu (1981), C.daijinensis Fang et W. K. Hu (1981), It is widespread from Hengduan Mo-untain region to western Hubei, and easily distinguished from the other members of the subgenus by leaves with crisped hairs and not harsrsh to touch beneath, cymes arranged in corymbs and cylindric style. But within the species complex, the variation is so wide that even two most distinct species can not be recognized. In this paper, quantitative ana lysis is maed for six characters which are usually used for classification, i. e., the length of petiole, the length of style, the length of petal, the length of peduncle, the ratio of the length of filament to that of petal, the ratio of the length of leaf to width, combined with geographical-morphological method in order to understand the variation of the complex and arrive at a reasonable classification. About 100 herbarium specimens are sampled from the distribution region of the complex divided into four sampling areas (tab. 3), each including the localities of the type specimens of one or two names. The statistically analysed data are listed in Tab. 4, 5, 6 and pictorialized scatter diagram of herbarium speciemens is presented in Fig. 2.