XLIV. SAXIFRAGER. 99 
TRIBE 3. ESCALLONIE®. 
4. CHORISTYLIS, Harv. 
Flowers polygamous. Calyx-tube obconic, adnate with the 
ovary; limb 5-cleft, persistent. Petals 5, inserted within 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.— FI. Cap. i. p. 308; Thes. 
Cap. t. 123. 
C. rhamnoides, Harv., the only species, is a leafy shrub, extending from the 
eastern frontier to Natal. Leaves alternate, ovate, serrate, ribbed and nerved. 
Flowers small and green, in axillary panicles. 
4 
Trise 4°. BREXIER. 
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-celled ; ovules many, on axile placentas; style short; stigma 
5-lobed. Seeds without albumen ; embryo almond-like.— FV. 
Cap. 11. p. 597. 
B. Madagascariensis, 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. 
Orper XLV. CRASSULACE/E. 
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 
alburinous.— Succulent plants, with fleshy, entire, rarely 
crenate or pinnate leaves. Flowers in cymes or solitary, 
showy or minute. 
H 2 
