Cyathocalyx

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]

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.

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]

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

References
  1. 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.
  2. http://www.theplantlist.org/1.1/browse/A/Annonaceae/Cyathocalyx/
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