罗汉果属修订及葫芦科二新属

中国科学院大学学报

罗汉果属修订及葫芦科二新属

李建强

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1993-01-10 发布日期:1993-01-10
通讯作者: 李建强

A Revision of the Genus Siratitia Merr. and Two New Genera of Cucurbitaceae

Li Jian-qiang

Received:1900-01-01 Revised:1900-01-01 Online:1993-01-10 Published:1993-01-10
Contact: Li Jian-qiang

摘要/Abstract

摘要：

在对广义的罗汉果属进行形态学、解剖学，孢粉学、细胞染色体数目和植物地理学研究的基础

上，进一步对该属作了分类学的修订。主张将罗汉果属的三个亚属提升为三个属即自兼果属、小球瓜属和罗汉果属。

关键词: 葫芦科, 罗汉果属修订, 自兼果属, 小球瓜属

Abstract:

Two new genera are described while a systematic study on the genus

Siraitia (s. l. ) is made. Siraitia Merr. (s. 1. )contains seven or eight species, some

of which were placed in the genus Thladiantha Bunge(Cogniaux 1881, 1916,

Jeffrey 1962)until 1981 (Lu & Zhang 1981 ). Though Siraitia as a genus was des-

cribed in 1934, it has not been properly circumscribed up to now. Siraitia (Jeffrey

1980)was divided into three subgenera (Zhang & Lu 1989)which in this study are

raised to three genera: namely Baijiania1） A. M. Lu et J. Q. Li, gen. nov.,

Microlagenaria (C. Jeffrey) A. M. Lu et J. Q. Li, gen. nov. and Siraitia Merr.

Baijiania is clearly discriminated from Siraitia by non-glandular scales, entire

leaf-blades racemose, 5—8-flowered male inflorescences, large, heterogeneous,

glabrescent or sparsely hairy sepals, reniform anthers , wingless seeds thick extine

and chromosome number 2n = 32. The genus Microlagenaria, which is only distrib-

uted in Africa is situated between Baijiania and Siraitia in phylogeny, but more

closely related to the latter (Plants with glandular scales; leaf-blades 3-5-obed;

male inflorescences racemose, many-flowered; sepals small, triangular; anthers

reniform, curved; female flowers solitary or 8-13-flowered, clustered on a

short (2cm) peduncle). A key to the genera is as follows:

1. Plants without glandular scales

2. Tendrils coiling above the forking point, anthers erect, 2n= 18

........................................................ 1. Thladiantha

2. Tendrils coiling both above and below the forking point; anthers curved,

2n= 32 .................................................. 2. Baijiania

1. Plants with glandular scales

3. Leaves 3--5-lobed, anthers curved, seeds wingless ...........................

....................................................... 3. Microlagenaria

3. Leaves entire, anthers S-shaped, folded, seeds winged 2n= 38... 4. Siraitia

Key words: Cucurbitaceae, Siralitia revision, Baijiania, Microlagenaria

李建强. 罗汉果属修订及葫芦科二新属[J]. 中国科学院大学学报.

Li Jian-qiang. A Revision of the Genus Siratitia Merr. and Two New Genera of Cucurbitaceae[J]. .