SCROPHULARINE.E 321 



glabrous except on the keel which is coarsely hairy, two-celled, 

 many-seeded, dehiscing at the apex with four valves. 



Seed peltate, broadly oblong, or of various outlines, convex 

 dorsally, flattened ventrally with an oblong or obovate, elevated 

 hilum, imbricating and lying obliquely to the flattened sides of 

 the ovary, pale straw- or almost amber-coloured ; micropyle at 

 the upper end. 



FIG. 562. Veronica arvensis, x 30. A, longitudinal section of seed : 

 M, micropyle ; T, testa ; P, endosperm ; C, cotyledon. B, transverse 

 section of seed : P, endosperm ; C, cotyledon ; H, hilum. 



Endosperm in the mature seed copious, fleshy, white, embedding 

 and surrounding the embryo. 



Embryo rather small, considerably shorter than the endosperm, 

 colourless ; cotyledons ovate, obtuse, plano-convex, lying in the 

 broad plane of the seed, with their backs to the placenta ; radicle 

 terete, obtuse, pointing to the micropyle at the upper end of the 

 seed, somewhat longer than the cotyledons, and narrower or 

 thinner. 



Veronica Buxbaumii, Ten. (fig. 563). 



Ovules pendulous, horizontal or ascending, anatropous or nearly 

 so, with the micropyle close to the hilum, and consequently superior, 

 horizontal or inferior. 



Capsule much compressed laterally, bifid, with widely diverging, 

 obtuse, keeled lobes, glandular-hairy all over, dehiscing when 

 mature by four apical valves, with about eight to twelve seeds in 

 each of the two cells, attached by a very short pale or colourless 

 funicle to papillose projecting processes of the placentas which 

 are deep green before the capsule dries up. 



II. Y 



