DICOTYLEDONES 



433 



Rosaceae. The Rosace* (Fig. 422) are economically of much importance, 

 as they comprise the most valuable fruits of temperate regions. Apples, Pears, 

 Peaches, Cherries, Straw- 

 berries, etc., are all 

 Rosacese. The family is 



A 



sometimes divided into 

 three subfamilies 

 Drupacese (Cherry fam- 

 ily) , Pomacese (Apple 

 family), and Rosacese 

 proper. 



Leguminosae. The 

 Leguininosse, or Pea 

 family, is the largest 

 family of the Choripet- 

 alse. It is especially 

 developed in the Trop- 

 ics, where many Legu- 

 minosse are trees of 

 great size, and many are giant woody creepers or lianas. 



Three subfamilies are distinguished, Papilionacese, Csesalpinese, and Mi- 

 mosese. The two latter are mainly tropical, most of the Leguminosse of tem- 

 perate regions belonging to the Papilionacese. 



FIG. 423. Cassalpinia pulcherrima ; st, stigma. 



st- 



r 



FIG. 424. A-E, Pisum sativum. B, petals separated; v, standard (vexillum) ; 

 w, wings; k, keel. C, stamens, and carpel, x. D, embryo with one cotyledon 

 removed. F, G, Cercis Canadensis. H, I, Schrankia uncinata. I, single flower, 

 enlarged. 



2r 



