228 



ON SEEDLINGS 



green, becoming reddish when old, broadest above the middle, nar- 

 rowed towards the base, then suddenly dilated, amplexicaul or 



slightly perfoliate, 2*3 cm. long, 

 greatest breadth 1-5 mm. 



Stem herbaceous, annual, de- 

 veloped when about to flower ; 

 manv primary nodes undeveloped. 

 Leaves simple, entire, radical 

 and cauline, alternate, exstipulate, 

 petiolate, glabrous, rather fleshy, 

 bright green ; petioles flattened 

 above or shallowly grooved, long, 

 slender, fleshy, glabrous, dilated 

 and amplexicaul at the base. 



Nos. 1 and 2. Narrowly spathu- 

 late with a long petiole. 

 No. 3. Much broader. 

 Nos. 4-8. Rhomboid, obtuse 

 or subacute, on long petioles. 

 Spraguea umbellata, Torr. (fig. 206). 



Fruit a globular capsule, compressed, several-seeded, dehiscing 

 by two valves. 



Seed reniform-orbicular, laterally compressed, thickest in the 

 middle, and narrowed to the edge, especially towards the basal 



FIG. 205. Claytonia perfoliata. 

 Nat. size. 



Jt 



ledons ; P, endosperm ; B, radicle. 



edge, glabrous, shining, minutely pitted all over ; testa rather thick, 

 hard and crustaceous ; hilum basal, but lying in a sinus which is 



