Cyathocalyx

Cyathocalyx
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Magnoliids
Order:	Magnoliales
Family:	Annonaceae
Subfamily:	Ambavioideae
Genus:	Cyathocalyx Champ. ex Hook. f. & Thomson
Species
22, see text.

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.

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.

Species

• Cyathocalyx acuminatus C.B.Rob.
• 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.
• Cyathocalyx lucidus Diels
• Cyathocalyx magnifructus R.J.Wang & R.M.K.Saunders
• Cyathocalyx martabanicus Hook.f. & Thomson
• Cyathocalyx minahassae Koord.
• Cyathocalyx obtusifolius Becc. & Scheff.
• Cyathocalyx olivaceus (George King (botanist)King) J.Sinclair
• Cyathocalyx petiolatus Diels
• Cyathocalyx polycarpa C.T.White & W.D.Francis
• Cyathocalyx pubescens Scheff.
• Cyathocalyx samarensis R.J.Wang & R.M.K.Saunders
• Cyathocalyx sumatranus Scheff.
• Cyathocalyx vitiensis A.C.Sm.
• Cyathocalyx zeylanicus Champ. ex Hook.f. & Thomson

Unresolved species

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