480 



ON SEEDLINGS 



when young, afterwards subglabrous, pale green or reddish, ulti- 

 mately brown or grey ; 1st internode 2 mm. long, conspicuously 

 thinner than the hypocotyl ; 2nd 1 mm. 

 long; 3rd not developed. Here the first 

 season's growth seems to end. 



Leaves simple, entire, cauline, al- 

 ternate, stipulate, petiolate, pubescent 

 on the midrib beneath, otherwise gla- 

 brous, deep subglaucous-green above, 

 paler beneath and glaucous, alternate- 

 ly penninerved, with ascending nerves, 

 curved at their apex and joining, form- 

 ing a loop, or obscurely anastomosing ; 

 petioles short, pubescent, grooved above 

 and rounded on the back ; stipules 

 long, spiny, tapering to an acute point, 

 dilated at the base longitudinally, and 

 compressed laterally; the colour of the 

 branch. 



Nos. 1-3. Elliptic, acute, or apiculate. 

 Ultimate leaves elliptic, or oblong- 

 elliptic, apiculate. 



Euphorbia macrorhiza, C. A. Mey. 



Fruit capsular or splitting up into three cocci separating from the 

 persistent axis, triangular or shallowly trisulcate, glabrous, green, 

 reticulate, ultimately ash -coloured, and tipped with the short per- 

 sistent style and three bifid stigmas ; cocci oblong, obtusely tetra- 

 gonal, disconnected along the interior angle, with a round opening 

 near the apex of that side, through which the funicle or process of 

 the placenta passes, sometimes splitting along the dorsal suture, 

 crustaceous, brittle. 



Seed oblong, elliptica. n transverse section, hard, smooth, trun- 

 cate at both ends, deep brown, slightly variegated with a paler 

 colour, crustaceous, capped with a reniform deep yellow or orange, 

 micropylar arillode, the notch of which stands over the minute hilar 

 spot ; raphe ventral, extending to the extreme base of the seed, 

 where the chalaza forms a small circular depression. 



Endosperm abundant, fleshy, white, surrounding the embryo. 



Embryo axile, straight, with a well-developed, pointed radicle ; 

 cotyledons flattened, or slightly convex on the back, short, oblong, 

 obtuse, entire, fleshy ; radicle stout, pointed, about equalling the 

 cotyledons In length. 



FIG. 638. 



Euphorbia splendens. 

 Nat. size. 



