| Allenanthus | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| clade: | Angiosperms |
| clade: | Eudicots |
| clade: | Asterids |
| Order: | Gentianales |
| Family: | Rubiaceae |
| Subfamily: | Cinchonoideae |
| Tribe: | Guettardeae |
| Genus: | Allenanthus Standl. |
| Type species | |
| Allenanthus erythrocarpus Standl. |
|
Allenanthus was a genus of flowering plants in the Rubiaceae family but is no longer recognized. It has been sunk into synonymy with Machaonia.[1]
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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by a molecular phylogenetic study of the subfamily Cinchonoideae in 2010.[1] Because of these results, Allenanthus is no longer maintained as a separate genus.