A new species of Struthanthus Mart. (Loranthaceae) from Oaxaca, Mexico
Struthanthus ibe-dzi sp. nov. is a new species described and illustrated from the cloud and pine-oak forests of the Sierra Madre del Sur in Oaxaca, Mexico. This species shares similarities of leaf shape and inflorescence type with S. deppeanus, S. quercicola, and S. ramiro-cruzii. However, S. ibe-dzi can be recognized by its glaucous branches, leaves and inflorescences; compressed nodes; convoluted distal half of styles in pistillate flowers; and staminate flowers with asymmetrical thecae and an extended connective forming an apiculate horn in both anther series. A distribution map and an identification key are provided to separate S. ibe-dzi from morphologically similar congeners present in the region.
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