RHAMNACEiE. 169 



Plate 163. 



ZIZYPHUS, Tour7i. 



Calyx 5-fidus, tubo expanse inferne cum basi ovarii coiina- 

 to. Petala obovata, unguiculata, patentia. Ovarium disco pia- 

 no immersum, 2 - 3-loculare. Drupa baccata ; putamine osseo 

 2-3- vel abortu 1-loculari loculis monospermis. Embryo 

 fere exalbuminosus ; cotyledonibus magnis crassis. — Fruti- 

 ces spinescentes, floribus in cymulis axillaribus, fructu eduli. 



ZizYPHUs, Tourn. Inst. p. 627. t. 403. Lam. III. t. 185. GfEitn. Fr. 1. 



t. 43. DC. Prodr. 2. p. 19. Brongn. in Ann. Sci. Nat. 10. p. 



354. t. 13. f. 2. Endl. Gen. 5717. 

 Rhamni Sp., Linn., Pall., Desf. 



Jujube. liOtc-liusli. 



Calyx flat, with a very short and broadly turbinate tube, 

 which is adnate to the base of the ovary, five-cleft ; the 

 lobes triangular, carinate in the middle on the upper side, 

 valvate in aestivation. Disk broad and nearly flat, surround- 

 ing the ovary and more or less adnate to it, and lining the 

 expanded tube of calyx, somewhat five-angled. Petals 5, 

 short, inserted on the margin of the disk at the angles, 

 alternate with the sepals, unguiculate, obovate, cucullate, 

 complicate-infolded around the stamens in aestivation, at 

 length widely spreading, deciduous. Stamens 5, inserted 

 with the petals and opposite them, about their length or 

 longer, spreading, deciduous : filaments subulate : anthers 

 didymous, two-celled, introrse, the cells opening longitudinal- 

 ly. Ovary nearly immersed in the disk, two - three-celled : 

 styles two or three, distinct or united below : stigmas in- 

 trorse or terminal. Ovules solitary in each cell, erect from 

 the base, anatro])ous, the raphe next the axis. 



Fruit a mucilaginous-fleshy drupe, girt at the base by 

 the persistent calyx, or by its tube from which the Hmb is 

 12 



