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Scientific results of the Vernay-Lang Kalahari Expedition, March to September, 1930. Views of the vegetation of the central Kalahari
A few notes on the vegetation of the central Kalahari based on collections of plants and a representative set of photographs taken during the Vernay-Lang Kalahari Expedition.
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On the identity of the genera Mapouria Aubl. and Grumilea Gaertn. (Rubiaceae, Psychotrieae)
The generic name Mapouria Aubl. should be applied to those Psychotrieae in which the following set of characters is found: deciduous stipules, heterostylous flowers, seeds without a longitudinalExpand
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New Bornean Acanthaceae
Descriptions are given of the tribe Lepidagathideae, that had already been proposed in an earlier paper, and of an entirely new tribe related to the latter, the Borneacantheae. The last-named tribeExpand
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On the systematic position of the Australian nelsonias and thunbergias and of the Ruellia species which by domin were referredto Aporuellia clarke
The reduction of Nelsonia campestris R.Br. to N. canescens (Lam.) Sprengl. was not justified; N. campestris is a species confined to Australia or, perhaps, to Australia and New Guinea; arguments areExpand
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Scientific results of the Vernay-Lang Kalahari Expedition, March to September, 1930. The origin of the flora of the central Kalahari
This paper discusses the origin of flora of the central Kalahari in terms of the study of older vegetation, climatic influences and changes, edaphic conditions and immigration and emigration ofExpand
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The identity of Micranthu serpyllifolius Roth
Recently I got the opportunity of examining a specimen from the “Rijksherbarium”, Leiden, which was provided with a label on which ROTH had written in the middle the name of the plant, viz. “Expand
An annotated list of the Acanthaceae collected by Miss W. M. A. Brooke on her travels in Bolivia
The Acanthaceae collected by Miss W. M. A. Brooke in Bolivia are listed. Five new species are described, viz. Stephanophysum brookeae, St. macrandrum, Sarotheca glutinosa, S. boliviensis andExpand
The concepts on which a morphology of the vascular plants should be based
It can hardly be denied that the expression “General Plant Morphology”, which is so often met with in botanical textbooks, has little or no meaning. A general morphology of the Plant Kingdom wouldExpand
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