Abstract
Hydrophylax, a genus of maritime strand or dune plants, was previously thought to comprise three species, one from India, Sri Lanka and Thailand (H. maritima), and two from Africa and Madagascar (“H.” carnosa and “H.” madagascariensis respectively). Evidence is presented that the African and Madagascan species are better placed into a separate genus (Phylohydrax). Differential characters betweenH. maritima andP. carnosa—P. madagascariensis, the relationships between the three species, and the affinities ofPhylohydrax andHydrophylax to otherSpermacoceae are discussed in detail.
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Puff, C. Phylohydrax (Rubiaceae-Spermacoceae)—a new genus to accommodate the African and Madagascan“Hydrophylax” species. Pl Syst Evol 154, 343–366 (1986). https://doi.org/10.1007/BF00990132
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DOI: https://doi.org/10.1007/BF00990132