22 



NATURAL HISTORY OF PLANTS. 



thus formed, contains three or foiir herbaceous species^ natives of the 

 Western districts of North America, principally California. The leaves 

 are alternate, exstipulate, pinnatisect, glabrous, like the "whole plant, 

 and the flowers^ are axillary and solitary. By the complete in- 

 dependence of the carpels these plants are to the series which follow, 

 nearly what the Biebersteinece with independent carpels are to the 

 Greraniums. 



SOEEEL SEEIES (FE., Surelle) 

 In the Sorrels^ (fig. 55-68) the flowers are regular and herma- 



Oxalis crenata. 



Fig. 56. Flower without perianth. ( V) . Fig. 55. FoUaceous branch. Fig. 57. Long. sect, of flower. 



phrodite, with a convex receptacle. The calyx is composed of five 



1 Endl. AtaJct. t 27.— Don, in Sweel Fl. 467 ; Ann ii 239 



Gard. ii. t. 37S -Benth. m H<.t. Trans, ser. i. ^White,"tinted with yeUow towards the claws 



409.— LiNDL. m Journ. Sort. Soc. iv. 78.— V. or pint. "" wiuus uie ciaws, 



HouTTE Fl. des Sevres, y. 4316.-Walp. Rep. i. 3 Oxalis L. Gm. n. 582._J. Geu. 270 ; in 



