SYSTEMATIC BOTANY. 



11 



Upper Fig. — Flower and 

 buds of Calnchortas albus, 

 and the three-Tringed fruit 

 outlined. 



Eight-hand Fig.— ct. Flower 

 of Spliacele 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 bottora of the calyx, c. 

 Flower and buds, showing in- 

 florescence of Trichostema 

 lanceolatum. d. Ripe fruit of 

 the same (4 triangular akenes 

 in the persistent calyx}. 



Left-hahd Fig. — Veiibena 

 hastata (spikes and bracts) . 

 a. Ripe fruit removed from 

 the calyx {natural size and 

 magnified). 



p. 117. The subglobose 

 and nodding flowers place 

 it in the first dix'-ision of 



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

 yellow species has larger flowers. The stifiiy 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 upon the petals cause them to 

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

 tion name Mariposa. 



