女蒿属的分类研究

中国科学院大学学报

女蒿属的分类研究

石铸

（中国科学院植物研究所）

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1979-11-18 发布日期:1979-11-18
通讯作者: 石铸

A taxonomic study of the genus Hippolytia Poljak.

Shih Chu

(Institute of Botany, Academia Sinica)

Received:1900-01-01 Revised:1900-01-01 Online:1979-11-18 Published:1979-11-18
Contact: Shih Chu

摘要/Abstract

Abstract:

The present paper is an attempt to propose a preliminary taxomomic treatment of

the genus Hippolytia Poljak. and to analyse the geographical distribution of its com-

posite elements.

This small genus with 17 species is divided into 2 sections, namely, section

Anthodesma Shih and section Hippolytia. Anthodesma is a small section with 3 species

and is characterized by fascicled corymbs, campanulate and nitid involucres, rigidly

herbaceous phyllaries, and undershrubs, while Hippolytia consisting of 14 species is

characterized by corymbose inflorescence or glomerules or compund heads, cuneate and

unpolished involucres, herbaceous phyllaries with pitch black margines.

There are 12 species of Hippolytia in China, of which 3 are proposed as new in the

present paper.

Regarding the distribution pattern of Hippolytia, it is noteworthy to note that its

range of distribution forms a more or less U-shape as shown in map 2. It may be seen

that Hippolytia distributes in Central Asia-Sino-Himalaya-Median Asia. Section Antho-

desma Shih occurs in central Asia, while section Hippolytia in the whole Himalayan

region and northern Meridional Ranges and Median Asia.

There seems to be no center of species concentration within the total range of

Hippolytia, whose species are localized in distribution, for example, H. desmantha Shih

is known only from Qinghai provence (Yu-Shu-Hsien), H. alashanensis (Ling) Shih

is restricted to Ninghsia and central part of Kansu provence. It is interesting to note

that H. yunnanensis (J. F. Jeffrey) Shih and H. longifolia (Wall.) Shih are referred

to as vicarious species. The localization of the species distribution and the obvious

discontinuity of morphological characters between species indicate a remarkable geogra-

phical influence on the species formation of Hippolytia.

Hippolytia is an alpine genus of temperate zone of Asia, in which 64 per cent of

species occurs at high elevations of above 3300m. altitude, 30 per cent of species are

distributed in middle elevations of above 2200m. altitude. The life forms are micro-

undershrubs, erect perennial herbs, glomerule stemless herbs or stemless herbs. It is very

possible that its geographical origin and development may be linked up with occurance

of desert steppe, especially of alpine meadow vegetations in the northern temperate

zone of Asia.

With regard to the geographical elements to which each species of Hippolytia

belongs, it seems to indicate that H. trifida (Turcz.) Poljak., H. alashanensis (Ling)

Shih and H. desmantha Shih belong to the geographical elements of central Asia,

while H. yunnanensis (J. F. Jeffrey) Shih, H. glomerata Shih, H. tomentosa (DC.)

Tzvel., H. senecionis (Bess.) Poljak. H. longifolia (Wall.) Shih, H. kennedayi (Dunn)

Ling, H. syncalathiformis Shih, H. gossypina (Hook. f. et Thoms.) Shih and H. nana

(C. B. Clarke) Shih to Himalayan elements, and H. darvasica (C. Winkl.) Poljak., H.

megacephala (Rupr.) Poljak,, H. herderi (Rgl. et Schmalh.) Poljak. to Median Asia, H.

delavayi (W. W. Smith) Shih to North-West-Yunna.

石铸. 女蒿属的分类研究[J]. 中国科学院大学学报.

Shih Chu. A taxonomic study of the genus Hippolytia Poljak.[J]. .