oaioai:doaj.org/article:2ffea9e7978547b39e4d7a0eb5de8a4b

The genera <i>Polygonum</i> and <i>Bilderdykia</i> (Polygonaceae) in southern Africa: morphology and taxonomic value of the ocrea and fruit

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Publication date
1 December 1989
Publisher
'AOSIS'
Doi

    Abstract

    The external morphology of the fruit and the ocrea of 16 taxa of Polygonum and Bilderdykia in southern Africa was studied.Fruits are either lenticular or trigonous. Six types of fruit surfaces were distinguished. Five types of ocreae were found, characterized by: a green undulating limb; a silvery hyaline sheath; a brown tubular sheath without terminal hairs; a terminal fringe of short cilia or setae; and a bristly hairy sheath fringed with long rigid setae

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