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. 2015 Mar 27;10(3):e0122080. doi: 10.1371/journal.pone.0122080

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This is an open-access article distributed under the terms of the Creative Commons Public Domain declaration, which stipulates that, once placed in the public domain, this work may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose.

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Fig 1 — Plants of O. etendekaensis in their natural habitat (low-growing shrublets in foreground), Etendeka Mountains, Namibia. The plants grow in stony soil and scree derived from basalt of the Etendeka Group, Karoo Supergroup. This section of the Great Escarpment lies to the east of the Namib Desert, about 50 km from the Atlantic Ocean coastline. The climate is very arid, with an average annual rainfall of about 100 mm. Photo: W. Swanepoel.