SYSTEMATIC BOTANY. 



II 



Fppek Fig. — Flower and 

 buds of Cal-ichortus albns. 

 and the three-winged fruit 

 outlined . 



RiGHT-HAXi> Fig. — a. Flower 

 of Sphacele calycina. b. Saiue 

 with corolla cnt to show sJa- 

 mens. pistil, and hairy ring 

 inside. «. Frnit (4 globular 

 akenes' of the same, lying in 

 the botti^m of the calyx, c 

 Flower and bnds. showing in- 

 florescence of Trichostenja 

 lanceolatum. d. Ripe frnit of 

 the same |4 triangular akenes 

 in the periistent calyxi. 



Left-hasd Fig. — Terbena 

 hagtsta (ppikos and bracts). 

 a. TA'pe fruit removed from 

 the calyx (natural size and 

 magnified . 



p. 117. The siibglo}x)se 

 ami notldiug flowers place 

 it ill the Mrst ilivision of 



§ 1, Ei(caI>fr/4or(u.<. Oiirj»lant i^ tlie white sj^cies. The 

 yellow species has larger flowers. The >tifriy erect, oj^en 

 flowers of § 2 of this genus have a luarkeilly ilifierent ap- 

 pearance from tlie species hei-e figured: yet their struc- 

 ture is similar. Tlie spots upon the j»etals cause tlieni to 

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

 tion name Marijtosa. 



