Leptosiphonium is a genus of flowering plants in the family Acanthaceae. It includes ten species native to New Guinea and the Solomon Islands.
Species Ten species are accepted: Leptosiphonium aruense Leptosiphonium forbesii Leptosiphonium garckeanum Leptosiphonium gloeocalyx Leptosiphonium guppyi Leptosiphonium papuanum Leptosiphonium potamoxenos Leptosiphonium stricklandii Leptosiphonium versicolor Leptosiphonium vestitum
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