Chonocentrum is a genus of the family Phyllanthaceae described as a genus in 1922.Pax, Ferdinand Albin & Hoffmann, Käthe. 1922. Das Pflanzenreich 147,15(Heft 81): 205Tropicos, Chonocentrum Pierre ex Pax & K. Hoffm. It contains only known species, Chonocentrum cyathophorum, native to the State of Amazonas in northwestern Brazil.Govaerts, R., Frodin, D.G. & Radcliffe-Smith, A. (2000). World Checklist and Bibliography of Euphorbiaceae (and Pandaceae) 1-4: 1-1622. The Board of Trustees of the Royal Botanic Gardens, Kew.
The genus is still not well understood; W. John Hayden has observed that the plant seems have been collected just once, in upper Rio Negro of Brazil in the 1850s,Müller Argoviensis, Johannes. 1866. Prodromus Systematis Naturalis Regni Vegetabilis 15(2): 454 in Latin and suggests that it has been misplaced taxonomically.Hayden, W. J., & S. M. Hayden. 1996. Two enigmatic biovulate Euphorbiaceae from the neotropics: relationships of Chonocentrum and the identity of Phyllanoa. A.I.B.S. Annual Meeting, Seattle, Washington. American Journal of Botany 83(6-supplement): 162.Hayden, W. J., & S. M. Hayden. 2000. Relationships of Chonocentrum (Euphorbiaceae). Virginia Academy of Science Meeting, Radford University, Radford, VA. Virginia Journal of Science 51: 95.
References