Allenanthus was a genus of flowering plants in the family Rubiaceae but is no longer recognized. It has been sunk into synonymy with Machaonia.[1]

Scientific classification e
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Gentianales
Family: Rubiaceae
Subfamily: Cinchonoideae
Tribe: Guettardeae
Genus: Allenanthus
Type species
Allenanthus erythrocarpus


Allenanthus was named by Paul Standley in 1940 in Annals of the Missouri Botanical Garden.[2] It was named in honor of Paul Hamilton Allen (1911-1963).

Until 2004, two species had been recognized, but fieldwork has shown that there is a continuum of variation between them.[3]

Comparisons of morphological characters and DNA sequences have shown that Allenanthus is embedded in Machaonia. This was confirmed by a molecular phylogenetic study of the subfamily Cinchonoideae in 2010.[1] Because of these results, Allenanthus is no longer maintained as a separate genus.



  1. ^ a b Manns U, Bremer B (2010). "Towards a better understanding of intertribal relationships and stable tribal delimitations within Cinchonoideae s.s. (Rubiaceae)" (PDF). Molecular Phylogenetics and Evolution. 56 (1): 21–39. doi:10.1016/j.ympev.2010.04.002. PMID 20382247. Archived from the original (PDF) on 2011-09-27.
  2. ^ Standley PC. 1940. Allenanthus pages 344-346. In: Woodson RE, Schery RW. "Contributions toward a flora of Panama". Annals of the Missouri Botanical Garden 27(3):265-364.
  3. ^ Borhidi AL (2004). "Especies y combinaciones nuevas de Rubiaceas en México y Mesoamerica". Acta Botanica Hungarica. 46 (1–2): 29–39. doi:10.1556/ABot.46.2004.1-2.3.

External linksEdit