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Trees, monoecious or (andro)dioecious. stipules fully amplexicaul, connate, with distinct parallel veins. stamens solitary or paired along radiating and branching ridges of the receptacle which bears membranaceous, free or connate interstaminal ‘bracts’ (probably representing reduced perianths). ovary free, partly adnate to the perianth, or immersed in the receptacle;


Amazonia present, Central America to Pacific Coast present, Neotropical present
Central America to Pacific CoastAmazonia The genus is neotropical and comprises three species. Two species have been economically important for the rubber they yield: the Central American - Pacific Coastal C. elastica Sessé and the Amazonian C. ulei Warb.


C.C. Berg 2001 – In: Fl. Neotrop. Monogr.: 269
Woodson 1960 – In: Ann. Missouri Bot. Gard.: 139
Benth. & Hook.f. 1880 – In: Gen. Pl.: 372
Engl. 1888 – In: Engl. & Prantl, Nat. Pflanzenfam. 3: 84
Endl. 1837: Gen. Pl: 282: ‘Castilloa’
O.F. Cook 1903 – In: Science n.s.: 436
Pittier 1910 – In: Contr. U.S. Natl. Herb.: 247
Trécul 1847 – In: Ann. Sci. Nat.: 136
Baill. 1875 – In: Hist. Pl.: 204
C.C. Berg 1972 – In: Fl. Neotrop. Monogr.: 92
Boerl. 1900 – In: Handl. Fl. Ned. Ind.: 328