中国茶藨子属1新记录种

【目的】白花茶藨子(Ribes fragrans Pallas)是茶藨子属(Ribes)的落叶灌木。白花茶藨子的发现对当地植物种类多样性的研究有重要意义,也对茶藨子属的分类和起源的研究或有助益。【方法】对白花茶藨子形态特征进行观察,并与相似种臭茶藨子(R. graveolens Bunge)的形态特征进行比较,通过扫描电镜对其花粉进行观察,并描述了花粉形态特征。【结果】结果表明,白花茶藨子在中国的分布区为大兴安岭西坡,为该种的自然分布区最南端。【结论】白花茶藨子是中国被子植物新记录种,目前只发现1个种群,亟需保护。凭证标本保存于东北林业大学标本馆(NEFI)。

A newly recorded plant of the genus Ribes from China

【Objective】Ribes fragrans Pallas is a deciduous shrub of the genus Ribes. The discovery of Ribes fragrans is of great significance to research on local plant species diversity. It also contributes to the study of the origin and classification of ribes.【Method】We observed the morphological characteristics of R. fragrans and compared them with those of R. graveolens Bunge from similar species. We observed pollen by electron microscopy and then illustrated its morphological characteristics. 【Result】 The survey showed that R. fragrans is distributed on the western slope of the Greater Khingan Mountains, China, which is the southern most natural distribution area of this species.【Conclusion】R. fragrans is a newly recorded type of angiosperm in China. At present, only one population has been identified, which is in urgent need of protection and preservation. The certificate specimens were kept in NEFI.