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Rollinia (named in honor of the French historian, Charles Rollin). Annonaceae. Biriba. Araticu. Cachiman. Tropical American shrubs and trees.
Fruits fleshy, compound, subglobose, resembling those of Annona, but with fls. very distinct in form from those of Annona: corolla gamopetalous with the lobes corresponding to the outer petals of Annona produced into 3 rounded wings or obtuse spurs, in some species horizontally projecting, in others curved upward and inward, in others outward and downward; lobes corresponding to the 3 inner petals, alternating with the winged or spurred lobes, reduced to minute scales, almost closing the opening above the essential parts. The type species is R. dolabripetala.—The genus, including about 50 species, ranges from Mex. and the W. Indies southward to Argentina and Peru. It is well represented in Brazil and Paraguay. In some of the species the frs. are highly prized for the table and rival the cherimoya, for which they have sometimes been mistaken. Several have been intro. into cult, through the Miami (Fla.) Station by the Office of Foreign Seed and Plant Introduction, U. S. Dept. of Agric. Much confusion has resulted from the fact that in many original descriptions of species of Rollinia, the frs. were not included, and that edible frs. in the markets unaccompanied by lvs. or fls. have in many cases been botanically misidentified. It is impossible here to give a key to all the species. The principal ones may be grouped according to the form of the fl. into sections or subdivisions, as indicated in the accompanying illustration (Fig. 3422).
INDEX.
deliciosa, 4.lanceolata, 11.rufinerva, 5.
dolabripetala, 1.laurifolia, 8.rugulosa, 10.
emarginata, 12.longifolia, 1.Sieberi, 3.
glaucescens, 13.mucosa, 2.sylvatica, 14.
incurva, 9.orthopetala, 7.Warmingii, 10.
Jimenezii, 6.Pittieri, 5.
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