中国远志属植物的分类研究

中国科学院大学学报

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中国远志属植物的分类研究

陈书坤

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1991-05-10 发布日期:1991-05-10
通讯作者: 陈书坤

A Taxonomic Study on the Genus Polygala L. in China

Chen Shu-Kun

Received:1900-01-01 Revised:1900-01-01 Online:1991-05-10 Published:1991-05-10
Contact: Chen Shu-Kun

摘要/Abstract

摘要：

本文通过对国产远志属的分类系统和外部形态(特别是花部、种子和种阜的形态)及花粉粒形态

的研究，结合地理分布，首次确认国产远志为3亚属、4组(其中2新组)，41种8变种。

关键词: 远志属, 花粉形态, 分类学, 系统, 中国

Abstract:

The present paper deals with the history of taxonomy, groos morphology, pollen

morphology, distribution, system and taxonomic treatment of the genus Polygala L. from

China. Three subgenera, 4 sections, 41 species and 8 varieties are recognized in this

treatment, of which 2 sections are described as new.

The system of Chinese species of Polygala L. is proposed as follow:

Subgen. 1. Chamaebuxus (DC.)Duchartre (Typus: Polygala chamaebuxus L.)

Sect. 1. Arillus S. K. Chen, sect. nov. (Typus: Polygala arillata Buch.-Ham. ex D. Don).

This section consists of about 20 species, distributed in the tropics and subtropics of Asia and

Africa, with 7 species found in South China.

Subgen. 2. Pseudosemeiocardium (Adema) J. Chetek et B. Krisa( Typus: Polygala

furcata Royle).

Sect. 1. Villososperma C. Y. Wu et S. K. Chen (Typus: Polygala wattersii Hance ). There

are 3 species in this section, distributed in S. China and N. Vietnam.

Sect. 2. Saxicola S. K. Chen, sect.nov. (Typus: Polygala saxicola Dunn). This section

consists of 8 species, among which P. tricornis Gagnep. and P. saxicola Dunn are distrib-

uted in both Vietnam and China, and the other 6 species are endemic to China.

Sect. 3. Pseudosemeiocardium ( Typus: Polygala furcata Royle). This section consists

of about 7 species, distributed in SW China, extending from Indo-China Peninsula, south-

ward to Malay, the Philippines, Indonesia and New Guinea, westward to the southern slope

of the Himalayas and N. India, northward to Japan.

Subgen. 3. Polygala (Typus: Polygala vulgaris L. ).

400 species or more belong to this cosmopolitan subgenus. Most species are found in

America and Africa, with 18 species discovered in China.

Taxonomic evidence: The characters of flowers, fruits and seeds, the indumentum of

seeds and presence or absence of caruncles are stable and also correlated with one

another. There is a certain combination of the above-mentioned characters in a given

group, which provide reliable evidence for the infrageneric division. A good example is the

Polygala arillata group, grown under the tropical and subtropical forests, which has large,

yellow flowers, with sepals fallen after blossom. The flower has carinas with a cristate appen-

dix, which is of 2-9 long narrow pieces. The seeds are spherical, with a hooded caruncle. Its

fruits are of annuloid stripes. (Fig. 1). The Polygala tenuifolia Willd. group, cosmopolitan

in distribution, has a middle-sized, purple or yellow flower with persistent sepals. Cristate

appendix of carina is usually fimbricate. The seed in the group is oblong or subovoid, with a

trilobate caruncle. Carpels of the fruits of this group are without annuloid stripes(Fig. 3).

The third group, Polygala saxicola group, is between the two as indicated above. The group

has a small, yellow or occasionally purplecolored flower, with sepals fallen after blossom or

sometimes with a persistent outer sepal. The cristate appendix of carina is lamellar or

cucullate. The seed of the group is sometimes with pubescences and hooded caruncles some-

times with hirtoselike villoses and no caruncle (Fig. 2)

pollen morphology and systematic treatments:

The pollen morphology of the domestic Polygala seems to support division of Polygala

L. into three groups as follows: A. Pollen grains subspheroidal, 10-19-colpate, colpi usual-

ly rather wide, relatively psilate in the polar area; B. Pollen grains reniform, 22-26-colpate,

sculptural in the polar area; C. Pollen grains long-spheroidal or subspheroidal, 9-

23-colpate, with long and deep colpi, which usually extend to the relatively psilate polar

area. The pollen morphology is naturally correlated with the morphology of flowers, fruits

and seeds. Based on these, three subgenera and four sections no subdivision in

Subgen. Polygala)are recognized.

Key words: Polygala, pollen morphology, Taxonomy, System, China

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中国远志属植物的分类研究

A Taxonomic Study on the Genus Polygala L. in China

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