Podostemaceae live in swift-running rivers with stony beds, mainly in the Tropics. This article is a comparative study of three Marathrum spp. (M. rubrum, M. schiedeanum, and M. tenue) and the monotypic genus Vanroyenella ...

Podostemum from South America (P. comatum, P. distichum, P. irgangii, P. muelleri, P. ovatum, P. rutifolium subsp. rutifolium, P. scaturiginum, P. weddellianum) and the North American P. ceratophyllum. Fluorescence microscopy ...