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Leaf anatomy of the South African Danthonieae (Poaceae). III. <i>Merxmuellera stricta</i>

By R. P. Ellis

Abstract

<p>The anatomical structure, of the leaf blade as seen in transverse section, and of the abaxial epidermis, of <em>Merxmuellera stricta </em>(Schrad.) Conert is described and illustrated. In this variable species four distinct anatomical “forms” are recognized viz. the typical  <em>M. stricta</em> form, the Cathedral Peak form, the Drakensberg form and the alpine form. The alpine and Cathedral Peak forms have recently been described as <em>M. guillarmodiae</em> Conert (1975). The degree of anatomical differentiation of these “forms” resembles the situation described in <em>M. disticha</em> (Nees) Conert (Ellis, 1980). Populations of both <em>M. stricta</em> and <em>M. disticha</em> from the Drakensberg mountains display extensive anatomical diversification which appears to be correlated with environmental factors. In addition, morphological differences are exhibited as well and the anatomical “forms” of <em>M. stricta</em> probably warrant taxonomic recognition.</p

Topics: General. Including nature conservation, geographical distribution, QH1-199.5
Publisher: AOSIS
Year: 1980
DOI identifier: 10.4102/abc.v13i1
OAI identifier: oai:doaj.org/article:10781328bff6480e927cd774feed1947
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