XXXVI. CELASTRINE^. 55 



of the disk, close to the ovary, free or connate with the ovary ; 

 filaments flattened, recurved ; anthers mostly extrorse, 2-1- 

 celled. Disk thick, flat or conical, sinuate. Ovary immersed 

 in the disk, 3-celled, tapering into a short or longer style ; 

 stigma simple or 3-lobed ; ovules 2, 4, or more, axile. Fruit 

 berried, 1-3-celled ; cells 1-4-seeded. Seed exalbuminous. — 

 Fl. Cap. i. p. 230. 



Trees or shrubs, often climbing. — 1 South African species, found near 

 Natal, with alternate leaves. Flowers in axillary tufts. 



Order XXXYII. RHAMNE^. 



Elowers perfect, regular. Calyx-limb 4-5-fid, the lobes 

 acute, valvate in bud. Petals 4, 5 or 0, inserted in the 

 throat of the calyx, usually small, hood-shaped or flat. Sta- 

 mens 4-5, inserted with the petals and opposite them. Disk 

 perigynous (rarely 0), either thick, filling the calyx-tube, or 

 annular, or cup-like, simple or lobed. Ovary sessile, free or 

 more or less adnate to the calyx-tube ; 3- rarely 2-4-celled ; 

 style erect, simple or cleft ; ovules mostly solitary, erect. 

 Fruit fleshy or capsular. Seeds mostly albuminous. — Trees or 

 shrubs, often spiny, sometimes climbing. Leaves simple, al- 

 ternate or opposite, often 3-5-nerved, or narrow-linear, 1- 

 nerved. Flowers small, in axillary cymes or terminal, capitate. 



Ovary quite free (not adhering to the calyx-tube). 

 Ovary sunk in and confluent with the flat, 5-angled disk . 1. Ziztphus. 

 Ovary not sunk in or confluent with the disk. 



Disk thin, lining the calyx-tube ; styles 3-4 2. Rhamnus. 



Disk fleshy, filling up the calyx-tube, but not confluent 



with the ovary ; style simple 3. Sctjtia. 



Ovary more or less adhering to the calyx-tube ; fruit inferior or half-in- 

 ferior. 

 An erect shrub, with expanded, penninerved, serrate leaves ; 



flowers panicled, glabrous 4. Noltea. 



A climbing shrub, with expanded, penninerved, entire 



leaves ; flowers in axillary cymes, glabrous 5. Helinus. 



Small erect shrubs, with crowded, often linear, entire leaves, 



and flowers in heads or spikes, rai'ely panicled ; calyx 



hairy 6. Phtlica. 



1. ZIZYPHUS, Juss. 



Calyx 5-fid, the tube broadly obconic, the lobes ovate, 

 spreading, keeled within. Petals 5, rarely 0, hood- shaped. 

 Disk flat, 5-angled, the margin free. Stamens 5, exserted. 

 Ovary immersed in the disk and confluent with it at base, 2- 

 rarely 3-4-celled ; styles 2-3, free or connate, divergent. 

 Drupe fleshy, globose or oblong, 1-8-celled. — Fl. Cap. i. p. 475. 



