Araracuara , the new genera of the Rhamnaceae from Colombian Amazon

[摘要] AraracuaraFern. Alonso, a new genus of Rhamnaceae only known from the sandstone plateaus of the Colombian Amazon, is described and illustrated. Its possible affinities are discussed and it is proposed that this is a relictual genus related to the pantropicalColubrinaand to a lesser degree with the AmazonianAmpelozizyphus . Also included are both a key to the Colombian genera of Rhamnaceae and a list of representative specimens of the genera studied (some of which have been poorly documented in Colombia).

[学科分类] 植物学

[关键词] Colombian amazonia;Ampelozizyphus;Araracuara;Colubrina;keys;New Genus;Rhamnaceae;Taxonomy