Genus of plants
Phylohydrax is a genus of plants in the family Rubiaceae. Its species are native to Madagascar, Tanzania and South Africa.
Taxonomy.
The genus "Phylohydrax" was established by Christian Puff in 1986 to accommodate two species previously placed in the genus "Hydrophylax". The two genera were distinguished on morphological grounds, in particular the detailed structure of the flowers. "Phylohydrax" species are heterostylous unlike those of "Hydrophylax". Puff placed the genus in the tribe Spermacoceae, a placement supported by more recent sources.
Species.
As of March 2023[ [update]], Plants of the World Online accepted two species:
References.
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