XLTY. SAXTFRAGE^E. 99 



TrTBE r]. EsCALLOXIEiE. 



4. CHORISTYLIS, Han. 



Elowers polygamous. Calyx-tube obconie, aduate Avitli the 

 ovary ; limb 5-eleft, persistent. Petals 5, inserted witliin the 

 margin of the calyx-tube, longer than the lobes, sessile, entire, 

 persistent, valvate in bud. Stamens 5, alternate with the petals 

 and inserted with them ; filaments short ; anthers ovate, 2- 

 celled, slitting. Ovary 2-celled, many-ovuled, with axile pla- 

 centas ; styles 2, short, at first connate, then widely diverging; 

 stigma capitate. Capsule more than half-inferior, its co- 

 nical, acuminate apex girt by the persistent calyx-limb and 

 petals, opening through the styles. — Fl. Cap. ii. p. 308 ; Thes. 

 Cap. t. 123. 



C. rhamnoldes, Harv., the only species, is a leafy shrub, extending from tlie 

 eastern frontier to Natal. Leaves alternate, ovate, serrate, ribbed and nerved. 

 Flowers small and green, in axillary panicles. 



Tribe 4 ?. Brexiej^. 



5. BREXIA, Thouars. 



Calyx free, 5-cleft, persistent, with short, acute, leathery 

 segments, imbricate in bud. Petals 5, inserted outside the 

 margin of a perigynous ring, leathery, oblong, obtuse, imbri- 

 cate in bud. Stamens 5, alternate with the petals and in- 

 serted with them ; filaments subulate ; anthers oblong, erect, 

 basifixed. Annular disk thick, attached to the base of the 

 ovary, with 5 fimbriate lobes. Ovary superior, 5-angled, 

 5-ceiled ; ovules many, on axile placentas ; style short ; stigma 

 5-lobed. Seeds without albumen ; embryo almond-like. — Fl. 

 Cap. ii. p. 597. 



B. 31 adagascariensis, Lindl., was collected at Delagoa Bay by Forbes. 

 A glabrous and subglaucous shrub, with oblong or obovate entire leaves, 

 with revolute margins. Flowers green, in imperfect umbels. 



Order XLV. CRASSULACE^. 



• 



Calyx free, 4-7-cleft or parted, imbricate. Petals inserted 

 in the bottom of the calyx, as many as its lobes, regular, free 

 or connate in an imperfectly tubular corolla, imbricate. Sta- 

 mens inserted with the petals, as many or twice as many. 

 Ovary (in the Cape genera) of 4-7 carpels, nearly apocarpous ; 

 styles terminal, subulate, free. Fruit of 4-7 follicles. Seeds 

 albuoinous.— Succulent plants, Avith fleshy, entire, rarely 

 crenate or pinnate leaves. Flowers in cymes or solitary, 

 showy or minute. 



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