Systematic Studies in Czernaevia Turcz. (Umbelliferae)

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Systematic Studies in Czernaevia Turcz. (Umbelliferae)

Chen Xiao-Ya, V. H. Heywood

Received:1900-01-01 Revised:1900-01-01 Online:1988-02-18 Published:1988-02-18
Contact: Chen Xiao-Ya

Abstract

Abstract:

Czernaevia Turcz. is a monotypic genus in the Umbelliferae, tribe Peucedaneae,

with the only species Cz. laevigata Turcz. occurring in northern East Asia. Although the spe-

cies has often been included in Angelica L., and sometimes even in Ostericum Hoffm., the

present study indicates that it is distinct not only in having dimorphic petals, but also in its

fruit structure, pollen morphology and phytochemical components. The fruit has numerous,

compressed vittae, the pollen grains are not constricted at the equatorial region with a small

P/E ratio (1.7-2.1), and neither coumarins nor flavonoids have been found to be present at

significant level in the species. It is taxonomically probably rather isolated and the mono-

typic genus Czernaevia is tenable.

Key words: Umbelliferae, Czernaevia, Angelica, Ostericum

Chen Xiao-Ya, V. H. Heywood. Systematic Studies in Czernaevia Turcz. (Umbelliferae)[J]. .

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[3]	Pan Ze-hui, Zhuang Ti-de, Yao Xin-mei, Sheng Ning. A Study on Karyotypes and Geographical Distribution of Angelica and Related Genera (Umbelliferae) in China [J]. , 1994, 32(5): 419-424.
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[9]	Chin Hui-Chen, Pan Ze-Hui, Sheh Meng-Lan, Wu Chu-Jun. A Report on Chromosome Numbers of Chinese Umbelliferae [J]. , 1989, 27(4): 268-272.
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Systematic Studies in Czernaevia Turcz. (Umbelliferae)

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