SYSTEMATIC BOTANY. 



11 



ITppEn Fio. — Flower and 

 buds of Calnchortus albiis, 

 and the three-winged fruit 

 outlined. 



Right-hand Fig. — a. Flower 

 of Sphacele calycina. 6. Same 

 with corolla cut to show sta- 

 mens, pistil, and hairy ring 

 inside, e. Fruit (4 globular 

 akeues) of the same, lying in 

 the bottom of the calj'x. c. 

 Flower and buds, showing in- 

 florescpnce of Trichostema 

 lancoolatum. (Z. Ripe fruit of 

 the same (4 triangular akenes 

 in the persistent calyx) . 



Left-hand Fig. — Verbena 

 hastata (spikos and bracts). 

 a. Ripe fruit rrnioved from 

 the calyx (natural size and 

 magnified;. 



p. 117. The subglobose 

 and nodding flowers place 

 it in the fir.st division of 



§ 1, Eucahjchortiis. Our plant is the white species. The 

 yellow species has larger floM'crs. The stiflly erect, open 

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

 pearance from the species here figured; yet their struc- 

 ture is similar. The spots ujjon tlie petals cause them to 

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

 tion name Maiijmad. 



