Pollen Morphology of Asarum in China

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Pollen Morphology of Asarum in China

Mi Qiu-Wen, Yang Chun-Shu

Received:1900-01-01 Revised:1900-01-01 Online:1991-03-10 Published:1991-03-10
Contact: Mi Qiu-Wen

Abstract

Abstract:

The present paper describes the pollen morphology of 27 species, 4 varieties and 1

form of Asarum from China. The pollen grains were all examined under light microscope and

scanning electron microscope. The apertures of pollen grains of Asarum are variable and so

distinct as to allow the identification of individual subgenera and species. The exine

ornamentation is compound and may be divided into two types: reticulate or cerebelloid un-

der verrucae. The pollen grains of Subgen. Asarum and Subgen. Heterotropa are

distinguishable, which supports the taxonomical subdivision based on the gross

morphology. The differences in the pollen morphology between A. caulescens Maxim. and

A. sieboldii Miq. in China and in Japan are discussed and some comparisons in the pollen

morphology between several species similar in the gross morphology are also made.

Key words: Aristolochiaceae, Asarum, Pollen morphology, Exine ornamentation.

Mi Qiu-Wen, Yang Chun-Shu. Pollen Morphology of Asarum in China[J]. .

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Pollen Morphology of Asarum in China

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