国产三角瓣花属(茜草科)订正

中国科学院大学学报

国产三角瓣花属(茜草科)订正

阮云珍

(中国科学院华南植物研究所，广州)

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1988-12-18 发布日期:1988-12-18
通讯作者: 阮云珍

Notes on the Genus Prismatomeris Thw. (Rubiaceae) of China

Ruan Yun-Zhen

(South China lnstitute of Botany, Academia Sinica, Guangzhou)

Received:1900-01-01 Revised:1900-01-01 Online:1988-12-18 Published:1988-12-18
Contact: Ruan Yun-Zhen

摘要/Abstract

摘要：

三角瓣花属Prismatomeris Thw．在Hooker(1873)和K．Schumann(1891)的茜草

科分类系统中隶于巴戟族Morindeae Miq．但在 Bremekamp(1966年)的分类系统中，其分类

位置未定。本属的胚根下位，花冠裂片镊合状排列和具针晶等特征与巴戟族相同，但它的花

离生，子房2室，胚珠盾形而着生于子房隔膜上半部等特征则与巴戟族明显不同。因此，

将本属分立作族并置于Bremekamp所定界的茜草亚科Rubioideae中似乎较合适。本文还提

供了经挑选的本属10对特征及其分类价值的说明。辨别了两个种：(1)将分布于中国的P.

tetrandra(Roxb．)K．Schum. 修订为 “P.tetrandra (Roxb.) K. Schum. subsp. multiflora

(Ridley，)Y．Z．Ruan”. (2)P. connata Y． Z. Ruan 被记述作新种它的热带新亚种是 P.

connata Y． Z． Ruan subsp. hainanensis Y． Z． Ruan。

关键词: 三角瓣花属, 四蕊三角瓣花, 多花三角瓣花, 海南三角瓣花, 分类位置

Abstract:

In the classification of J. D. Hooker (1873) and of K. Schumann (1891),

the genus Prismatomeris Thw. is included in the tribe Morindeae of Rubiaceae. In the mo-

dern classifications, e. g. Bremekamp (1966), however, the taxonomic position of the genus is

still uncertain. The genus agrees with the tribe Morindeae in the downward radicle, valvate

aestivation of the corolla lobes and presence of raphides, but it differs significantly from the

latter in the free flowers, bilocular ovary and the peltate ovule attached to the upper half of

septum. Therefore, it would be more suitable that the genus is separated from the tribe Mo-

rindeae Miq., and is raised to the rank of tribe, placed in the subfamily Rubioideae based on

Bremekamp’s delimitation.

In the present paper ten character pairs of the genus and the notes on their taxonomic

value are presented and two following species are recognized:

1. P. tetrandra (Roxb.) K. Schum. is found in northern India. Its subspecies,

which is distributed in Yunnan of China and in Thailand, was previously called P. tetran-

dra (Roxb.) K. Schumann, and is now revised as P. tetrandra (Roxb.) K. Schum.

subsp. multiflora (Ridley) Y. Z. Ruan.

2. P. connata Y.Z. Ruan is described as a new species, that has been treated as P.

tetrandra (Roxb.) K. Schum. by previous auth rs. It is native to the subtropic region of South

China. Its tropical new subspecies, P. connata. Y. Z. Ruan subsp. hainanensis Y. Z.

Ruan, is found on Hainan Island.

Key words: Prismatomeris, P.tetrandra subsp.multiflora, P.connata, P.connata subsp.hainanensis, Systematic position

阮云珍. 国产三角瓣花属(茜草科)订正[J]. 中国科学院大学学报.