388 NATURAL HISTORY OF PLANTS. 
flat, or even concave on top. The ovary always contains two colla- 
teral ascending ovules, more or less completely anatropous, with their 
micropyles downwards and outwards.’ The fruit is coriaceous or 
woody, entire or bivalved, one or two-seeded. When there are two 
seeds they are collateral and unsymmetrical, more flattened on the 
side by which each touches its fellow than on the other, or edged 
Grevillea (Manglesia) glabrata. 
Fre. 219. Fra. 220. Fig. 221. Fig. 222. 
Inflorescence. Flower (3). Perianth-leaf and = Gyneceum ($). 
stamen. 
at’ the junction of the two faces by a more or less prominent or 
fleshy rim, or a wing which may encircle the whole seed. Within 
the seed-coats is a large fleshy exalbuminous embryo, with its 
radicle inferior. Grevillea consists of Oceanian trees and shrubs, 
mostly natives of Australia. The leaves are alternate, usually per- 
sistent, glabrous or covered with peculiar hairs,* flat or cylindrical, 
entire, or more or less incised. The flowers are but rarely solitary 
or geminate in the axils of the upper leaves or at the end of the 
branches. We find them far more frequently in axillary or terminal 
simple or branched racemes. The flowers are usually paired in the | 
axil of each bract; this is the case in about nine-tenths of the two 
hundred known species ;* they are rarely solitary or fascicled. 
Next to this genus come Hakea (fig. 225), differing but very little ; 
1 They have two coats. Sturt Exp. App., 28.—Gaupicu., in Voy, Frey. 
2 Often of the kind termed pili medifixi (hairs — cin., Bot., 443, t. 46.—A. Cunn., in Field N. §.- 
fixed by the middle), Wal., 328.—LInD1., in Mitch. Exp. East. Aus. 
3 Kn. & Satiss., Prot., 120.—R. Br., in tral. (1839); in Post, Fl. Gard,, ii. u. 886; in 
