ROLLINIA 



2975 



duced into 3 rounded wings or obtuse spurs, in some 

 species horizontally projecting, in others curved up- 

 ward 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 



3422. Types of Rollinia flowers, a, R. Sieberi; b, R. deliciosa; c, 

 R. laurifolia; d, R. mgulosa; e, R. lanceolate;/, R. emarginata. 



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 Ivs. 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 accompany- 

 ing illustration (Fig. 3422). 



deliciosa, 4. 

 dolabripetala, 1. 

 emarginata, 12. 

 glaucescens, 13. 

 incurva, 9. 

 Jimenezii, 6. 



INDEX. 



lanceolata. 11. 

 laurifolia, 8. 

 longifolia, 1. 

 mucosa, 2. 

 orthopetala, 7. 

 Pittieri, 5. 



rufinerta, 5. 

 rugulosa, 10. 

 Sieberi, 3. 

 sylvatica, 14. 

 Warmingii, 10. 



A. Corolla-wings oblong, laterally compressed, widely 

 spreading and more or less ascending. (Fig. 3422, a.) 

 1. dolabripetala, St. Hil. (Annona dolabripetala, 

 Raddi. Rollinia longifolia, St. Hil.). HATCHET^LOBED 

 ROLLINIA. A small tree, 16^-23 ft. high: young 

 branches, together with the lower surface of the young 

 Ivs., their petioles, and the fls. ferrugineous-tomentose : 

 vegetative Ivs. oblong-lanceolate or oblong, 4-6 in. long 

 and about 1% in. broad, those of the flowering branches 

 much smaller, acutish or acute, or sometimes subacumi- 

 nate at the apex, obtuse at the base, glabrous above, 

 rufous-pubescent beneath, with the midrib prominent 

 beneath, ferrugineous, with 20-28 lateral nerves; 

 petiole about ^in. long, grooved above, persistently 

 ferrugineous-tomentose: peduncles solitary or rarely 

 in pairs, ferrugineous-tomentose, bracteolate at the 

 base, l A~\ l /2 in. long: calyx-divisions cordate-ovate or 

 suborbicular; corolla- wings rather fleshy, 1 in. long, 

 ferrugineous-tomentose, laterally compressed in the 

 form of a hatchet or broad knife with its blade in a 

 vertical plane, at first ascending, at length broadly 

 spreading: fr. (immature) globose, squamose, pubescent, 

 with the areoles slightly convex; seeds compressed, 

 somewhat cuneate, testa reddish yellow, thin, showing 



the wrinkles of the inclosed ruminate endosperm. This 

 species, the type of the genus Rollinia, was first col- 

 lected on Mt. Corcovado, near Rio de Janeiro, Brazil, 

 where its fls. appeared in Feb. and its fr. in May. 



2. mucdsa, Baill. (Annona mucosa, Jacq.). CACHI- 

 MAN MORVETJX. A small tree first described by Jacquin 

 from specimens growing spontaneously in the forests of 

 Martinique, and said by him to be rarely cult. In 

 habit it bears a close resemblance to the common cus- 

 tard-apple, Annona reticvlata. Lvs. oblong, pointed at 

 the apex and base: corolla gamopetalous in the form of 

 a roundish body from which 3 oblong lobes spread out- 

 ward in such a way that it not inaptly represents a 

 tricorn hat: areoles of fr. gibbous (convex) not papillose 

 nor aculeate; fleshy pulp very viscous and not very 

 well flavored. R. Sieberi has been referred to this 

 species, but Pere Duss, in his Flora of the French, 

 Antilles has kept the two species distinct. 



3. Sieberi, A. DC. CACHIMAN MONTAGNE. A small 

 tree first described and figured from the island of Trini- 

 dad and erroneously referred by its collector to the 

 common custard-apple, Annona reticulata, to which its> 

 fr. and Ivs. bear a certain resemblance: Ivs. oval-oblong, 

 acute at apex and base, usually 5-^6 in. long and 2-;3 in. 

 broad, thin, above puberulous with the nerves pilose, 

 beneath paler and more pilose, narrowed at the base into 

 pilose petioles J^in. long, some of them at the base of 

 the branches broadly ovate and obtuse, about 1 in. long : 

 peduncles If .-opposed, 1-fld., 1-1% in. long, bearing 2 

 small ovate-acute bracteoles, one near the base, the 

 other about the middle: corolla-wings laterally com- 

 pressed, linear-oblong, rounded at the apex, diverging, 

 straight or curving slightly upward: fr., according to 

 Pere Duss, usually larger than that of Annona squamosa, 

 the surface divided into pronounced raised squamose 



3423. Rollinia deliciosa. 



