SYSTEMATIC BOTANY. 



11 



Upper 

 buds of 

 and the 

 outlined. 



Right-hand Fig. —a. Flower 

 of Sphacele calycina. b. Same 

 with corolla cut to show sta- 

 mens, pistil, and hairy ring 

 inside, e. Fruit (4 globular 

 akenes) of the same, lying in 

 the bottom of the calyx, c. 

 Flower and buds, showing in- 

 florescence of Trichostema 

 lanceolatum. d. Eipe fruit of 

 the same (4 triaugalfir akenes 

 in the persistent calyx) . 



Left-hand Fig.— Verbena 

 hastata (spikes and bracts). 

 a. Ripe fruit removed from 

 the caljrx (natural size and 

 magnified; . 



p. 117. The subglobose 

 and nodding flowers place 

 it in the first division of 



§ 1, Eucahjcho7'tus. Our plant is the white species. The 

 yellow species has larger flowers. The stiffly erect, open 

 flowers of § 2 of this genus have a markedly dififerent ap- 

 pearance from the species here figured; yet their struc- 

 ture is similar. The spots upon the petals cause them to 

 resemble the wings of butterflies; hence the common name Butterfly Tulip, and the sec- 

 tion name Mariposa. 



