Coptosapelteae

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Lamiids
Ordo: Gentianales

Familia: Rubiaceae
Tribus incertae sedis: Coptosapelteae
Genera: Acranthera – Coptosapelta
Name

Coptosapelteae Bremek. ex S.P.Darwin, Taxon 25: 600. (1976)

Type genus: Coptosapelta Korth., Ned. Kruidk. Arch. 2 II. 112. (1851)

Note: Sensu Rydin & Bremer (2009) not Bremekamp & Darwin (1976)
References

Bremekamp, C.E.B. & Darwin, S.P. 1976. The Subfamilial, Tribal and Subtribal Nomenclature of the Rubiaceae. Taxon 25(5-6): 600. JSTOR
International Plant Names Index. 2018. Coptosapelteae. Published online. Accessed: Dec. 29 2018.
Rydin, C., Kainulainen, K., Razafimandimbison, S.G., Smedmark, J.E. & Bremer, B. 2009. Deep divergences in the coffee family and the systematic position of Acranthera. Plant Systematics and Evolution 278(1-2): 101-123. DOI: 10.1007/s00606-008-0138-4 PDF Reference page.
Yang, L.L., Li, H.L., Wei, L.,Yang, T., Kuang, D.Y., Li, M.H., Liao, Y.Y., Chen, Z.D., Wu, H. & Zhang, S.Z., 2016. A supermatrix approach provides a comprehensive genus‐level phylogeny for Gentianales. Journal of Systematics and Evolution 54(4): 400-415. DOI: 10.1111/jse.12192 Full text PDF from ResearchGate Reference page.

Coptosapelteae is a tribe incertae sedis of flowering plants in the family Rubiaceae and contains about 55 species in 2 genera. Its representatives are found in tropical and subtropical Asia.[1] This tribe has not been placed within as subfamily of Rubiaceae, but is sister to the rest of the family.[2]
Genera

Currently accepted names[1][2][3][4]

Acranthera Arn. ex Meisn. (39 sp)
Coptosapelta Korth. (16 sp)

Synonyms

Androtropis R.Br. ex Wall. = Acranthera
Gonyanera Korth. = Acranthera
Psilobium Jack = Acranthera
Thysanospermum Champ. ex Benth. = Coptosapelta

References

"World Checklist of Rubiaceae".
Bremer B (2009). "A review of molecular phylogenetic studies of Rubiaceae". Annals of the Missouri Botanical Garden. 96: 4–26. doi:10.3417/2006197.
Bremer B, Eriksson E (2009). "Time tree of Rubiaceae: phylogeny and dating the family, subfamilies, and tribes". International Journal of Plant Sciences. 170: 766–793. doi:10.1086/599077.
Robbrecht E, Manen J-F (2006). "The major evolutionary lineages of the coffee family (Rubiaceae, angiosperms). Combined analysis (nDNA and cpDNA) to infer the position of Coptosapelta and Luculia, and supertree construction based on rbcL, rps16, trnL-trnF and atpB-rbcL data. A new classification in two subfamilies, Cinchonoideae and Rubioideae". Systematic Geography of Plants. 76: 85–146.