V EG ETA TIVE REP ROD UCTION. 



259 



a great number of sporophylls are to be borne, the torus is 

 elongated, as in the mousetail (fig. 286); or greatly enlarged, 



Fig. 285. Fig. 286. 



Fig. 285.— The torus of a flower of stonecrop (Sedum ternatum), with the leaves re- 

 moved to show scars ; two leaves of each kind shown, a, sepal ; b, petal ; c, stamen ; 

 rf, carpel. Magnified several diam. — After Gray. * 



Fig. 286. — Flower of mousetail (Myosurus minimus), halved; showing s, spurred 

 sepal ; si, stamen ; st' , a staminode or sterile stamen, having the position and form of 

 a petal ; /, elongated torus covered with carpels, some of which are cut through. Mag- 

 nified several diam. — After Engler. 



Fig. 287. — Flower of the strawberry, halved ; showing elongated and thickened torus. 

 Magnified about 3 diam.— After Bessey. 



as in the strawberry (fig. 287); or transformed into a cup, as 

 in the rose (fig. 288). 



When flowers in large numbers are very closely associated, 



