SYSTEMATIC BOTANY. 1 
Urrer Fic.— Flower and 
buds of Calochortus albus, 
and the three-winged fruit 
outlined. 
RiGHT-HaND Fic.—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. « 
Flower and buds, showing in- 
florescence of Trichostema 
Janceolatum. d. Ripe fruit of 
the same (4 triangular akenes 
in the persistent calyx). 
Lert-HanD Fic.— Verbena 
hastata (epikes 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 division of 
§ 1, Zucalychortus. 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 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 Jfariposa. 
