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Publication Type J
Authors Taia, W. K.
Title Family boraginaceae: Hair variations and their significance in the systematic of the genera
Source Asian Journal of Plant Sciences
Abstract Leaves of sixty six species distributed over twenty genus have been studied by using both the stereo and scanning electron microscopes to investigate the degree of hair density as well as the types of hairs and their characters. From this investigation four groups have been recognized as the result of subjecting the hair characters to cladistic analysis. The first group gathers all the glabrous species together which support their isolation in a new family, Ehretiaceae, as proposed before. The rest of the groups collect the rest of the species at different levels of variations which donot support further division of the genera. Species of Heliotropium are, closely related to each others which, partly, support their separation as proposed before. Meanwhile some of the Heliotropium species resemble the other Boraginoideae species in their haircharacters. A postulated line of evolution has been drawn which start with the glabrous species as the more primitive ones and ended with the: woolly species with either one raw or two rows basal cells and echinate, granulate or scaly hair walls in the other end.
ISSN 1682-3974
ISBN 1682-3974
Publication Date May-Jun
Year Published 2006
Volume 5
Issue 3
Beginning Page 441-454
Unique Article Identifier BCI:BCI200600603362
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