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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Magnoliids
Ordo: Magnoliales

Familia: Annonaceae
Subfamilia: Ambavioideae
Genus: Cyathocalyx
Species: C. annamensis – C. globosus – C. harmandii – C. magnifructus – C. martabanicus – C. sumatranus – C. zeylanicus

Cyathocalyx Champ. ex Hook. f. & Thomson, Fl. Indica 1: 126–127. (1855)

Type species: Cyathocalyx zeylanicus Champ. ex Hook.f. & Thomson Fl. Ind. [Hooker f. & Thomson] i. 127. (1855)


Champion, J.G. 1855. Flora Indica: Being a Systematic Account of the Plants of British India, 1: 126–127.
International Plant Names Index. 2016. Cyathocalyx. Published online. Accessed: July 21 2016.
Surveswaran, S., Wang, R.J., Su, Y.C. & Saunders, R.M. 2010. Generic delimitation and historical biogeography in the early-divergent 'ambavioid' lineage of Annonaceae: Cananga, Cyathocalyx and Drepananthus. Taxon 59(6): 1721-1734.JSTOR Full text from ResearchGate Reference page. 2016. Cyathocalyx. Missouri Botanical Garden. Published on the internet. Accessed: 2016 July 21.

Cyathocalyx is a small genus with about 22 species distributed from southern India, Sri Lanka, through Malaysia, Indomalayan islands and reaches as far as Fiji in the South Pacific.[1]

The salient features of the genus includes- monopodial trees, supra-axillary or nearly leaf-opposed inflorescences, six petals which are basally concave and constricted above the reproductive organs to form a "pollination chamber".

The genus consists 22 identified species with two unresolved species.[2]

Cyathocalyx acuminatus C.B.Rob. peninsular malaysia
Cyathocalyx annamensis Ast.
Cyathocalyx apoensis (Elmer) J.Sinclair
Cyathocalyx cauliflorus K.Schum. & Lauterb.
Cyathocalyx crassipetalus R.J.Wang & R.M.K.Saunders
Cyathocalyx filiformis Ast.
Cyathocalyx globosus Merr.
Cyathocalyx hexagynus (Miq.) R.J.Wang & R.M.K.Saunders
Cyathocalyx kingii Boerl. ex Koord. Peninsular malaysia
Cyathocalyx lucidus Diels
Cyathocalyx maingayi Hook. f. & Thomson peninsular malaysia
Cyathocalyx magnifica *peninsular malaysia
Cyathocalyx magnifructus R.J.Wang & R.M.K.Saunders. malaysia (sbh.srwk)
Cyathocalyx martabanicus Hook.f. & Thomson
Cyathocalyx minahassae Koord.
Cyathocalyx obtusifolius Becc. & Scheff.
Cyathocalyx olivaceus (George King (botanist)King) J.Sinclair peninsular malaysia
Cyathocalyx petiolatus Diels. Peninsular malaysia
Cyathocalyx polycarpa C.T.White & W.D.Francis
Cyathocalyx pubescens Scheff.
Cyathocalyx samarensis R.J.Wang & R.M.K.Saunders
Cyathocalyx scortechinii (King) J.Sinclair. peninsular malaysia
Cyathocalyx sumatranus Scheff.
Cyathocalyx vitiensis A.C.Sm.
Cyathocalyx zeylanicus Champ. ex Hook.f. & Thomson. Peninsular malaysia

Unresolved species

Cyathocalyx harmandii (Finet & Gagnep.) R.J.Wang & R.M.K.Saunders
Cyathocalyx maingayi Hook.f. & Thomson


Wang, R.J and Saunders, R.M.K.S (2006) A synopsis of Cyathocalyx species (Annonaceae) in Peninsular Malaysia, Sumatra, and Borneom with descriptions of two new species. Botanical Journal of the Linnaean Society. 152,513-532.
"Cyathocalyx — the Plant List".

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