Chonocentrum

Chonocentrum
Conservation status
Data Deficient  (IUCN 3.1) [1]
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Malpighiales
Family:	Phyllanthaceae
Genus:	Chonocentrum Pierre ex Pax & K.Hoffm.
Species:	C. cyathophorum
Binomial name
Chonocentrum cyathophorum (Müll.Arg.) Pierre ex Pax & K.Hoffm.
Synonyms [2]
Drypetes cyathophoraMüll.Arg.

Chonocentrum is a genus of the family Phyllanthaceae described as a genus in 1922. ^{[3] [4]} It contains only known species, Chonocentrum cyathophorum, native to the State of Amazonas in northwestern Brazil. ^{[2] [5]}

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, ^[6] and suggests that it has been misplaced taxonomically. ^{[7] [8]}

References

1. Amorim, E.; Jordão, L.; da Rosa, P.; Farias, S. (2025). "Chonocentrum cyathophorum". IUCN Red List of Threatened Species (in Portuguese). 2025 e.T193198219A193198222. doi: 10.2305/IUCN.UK.2025-2.RLTS.T193198219A193198222.pt . Retrieved 4 February 2026.
2. "Chonocentrum cyathophorum (Müll.Arg.) Pierre ex Pax & K.Hoffm". Plants of the World Online . Royal Botanic Gardens, Kew . Retrieved 5 February 2026.
3. Pax, Ferdinand Albin & Hoffmann, Käthe. 1922. Das Pflanzenreich 147,15(Heft 81): 205
4. Tropicos, Chonocentrum Pierre ex Pax & K. Hoffm.
5. 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.
6. Müller Argoviensis, Johannes. 1866. Prodromus Systematis Naturalis Regni Vegetabilis 15(2): 454 in Latin
7. 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.
8. 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.