中国木蓼属的研究兼论木蓼族的系统

中国科学院大学学报

中国木蓼属的研究兼论木蓼族的系统

包伯坚, 李安仁

(中国科学院植物研究所，北京100093)

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1993-03-10 发布日期:1993-03-10
通讯作者: 包伯坚

A Study of the Genus Atraphaxis in China and the System of Atraphaxideae (Polygonaceae)

Bao Bo-jian, Li An-jen

(Institute of Botany, Academia Sinica, Beijing 100093)

Received:1900-01-01 Revised:1900-01-01 Online:1993-03-10 Published:1993-03-10
Contact: Bao Bo-jian

摘要/Abstract

摘要：

我国木蓼属有11种，3变种，其中特有种3个。本文通过对它们的形态，花粉等性状的研究，探

讨了属的系统位置，提出了木蓼族的演化系统。在分析了木蓼属的性状后，认为木蓼组Sect

Tragopyrum(Bieb．)Meisn．较为原始，应置于刺木蓼组Sect．Atraphaxis之前。本文还研究了该

属的地理分布，初步探讨了它的起源及现代分布格局的形成。

关键词: 木蓼族, 木蓼属, 系统, 花粉

Abstract:

The genus Atraphaxis is found mainly in gravel steppes, sandhills and

stony slopes or desert, with only a few species in meadow or river valleys. In

China there are two sections and eleven species (including three varieties), which

are distributed mainly in the northwest, with a few in the northeast and the north.

Characters of the genus were compared and analyzed in the present work. Outer

perianth segments 2, small, reflexed in fruit, inner perianth segments 2 or 3, large,

erected and enveloping the nut. The embryo is curved, but those in the other

genera of Atraphaxideae are straight. The curved embryo is the primitive

character, because most species of the order Caryophyllales are of a circular

embryo, which is belived to be ancestral in the Polygonaceae. The Pollen

ornamentations of Atraphaxis are striate or striate-reticulate, different from those of

the other genera. A new system of the tribe Atraphaxideae in proposed in the

present paper. Based on the character analysis of the species in China, the pres-

ent authors believe that Sect. Tragopyrum is more primitive than Sect.

Atraphaxis. According to the distribution, the genus Atraphaxis might originate

in Kazakstan, where not only are most species found, but also the most primi-

tive species, like A. muchketovii, as considered by A. N. Krasnov, are found.

Central Asia is considered as the distribution centre and origin centre of the

genus Atraphaxis.

Key words: Atraphaxideae, Atraphaxis, system, pollen

包伯坚, 李安仁. 中国木蓼属的研究兼论木蓼族的系统[J]. 中国科学院大学学报.

Bao Bo-jian, Li An-jen. A Study of the Genus Atraphaxis in China and the System of Atraphaxideae (Polygonaceae)[J]. .

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