Phylohydrax
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Gentianales
Family: Rubiaceae
Subfamily: Rubioideae
Tribe: Spermacoceae
Genus: Phylohydrax
Puff[1]
Type species
Phylohydrax carnosa
(Hochst.) Puff

Phylohydrax is a genus of plants in the family Rubiaceae. Its species are native to Madagascar, Tanzania and South Africa.[1]

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.[2] Puff placed the genus in the tribe Spermacoceae, a placement supported by more recent sources.[3]

Species

As of March 2023, Plants of the World Online accepted two species:[1]

  • Phylohydrax carnosa (Hochst.) Puff – Madagascar, South Africa
  • Phylohydrax madagascariensis (Willd. ex Roem. & Schult.) Puff – Tanzania, Madagascar

References

  1. 1 2 3 "Phylohydrax Puff". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2023-03-22.
  2. ↑ Puff, Christian (1986). "Phylohydrax (Rubiaceae-Spermacoceae)-a New Genus to Accommodate the African and Madagascan "Hydrophylax" Species". Plant Systematics and Evolution. 154 (3–4): 343–366. doi:10.1007/BF00990132. S2CID 33529035.
  3. ↑ Stevens, P.F. (2001 onwards). Rubiaceae Genera. Angiosperm Phylogeny Website. Retrieved 2023-03-22.


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