Il6 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



Flowers purple; sepals obtuse; stem flexuous and weak, almost 



creeping 36. C. Jlexuosus. 



Flowers white. Resembles C. splendens 37. C. dunnii. 



Group 8. Green Banded Mariposa. 



Type of Group C. macrocarpus. 



Petals purplish lilac, with a greenish line down the back, obovate- 

 acuminate. 



Stems stout and rigid; leaves linear and deeply channeled. North- 

 eastern California to eastern Washington and southern Idaho. 



38. C. macrocarpus. 

 Group 9. Sego Lilies. 



Type of Group C. nuttallii. 



Petals white, lilac, yellow, or pink; gland round; stem prominently 

 bulbiferous at base, umbellate. 



Flowers as described above. Stout desert plants of the Great Basin 

 and eastwardly 39. C. nuttallii. 



Flowers smaller, usually white; anthers sagittate. Slender Alpine 

 plants. Sierra Nevada 40. C. leichtlinii. 



Description of Species. 

 Calochortus. 



Perianth deciduous, of six distinct, more or less concave segments, the 

 three outer (sepals) greenish and more or less sepaloid, the inner (petals) 

 mostly broadly cuneate-obovate, usually with a conspicuous glandular pit 

 near the base, and variously colored. Stamens six, on the base of the seg- 

 ments, included ; anthers linear to oblong, basifixed, dehiscent laterally. 

 Ovary sessile, triquetrous and three-celled, many ovuled; stigmas sessile, 

 recurved, persistent; capsule elliptical to lanceolate, membranous, three- 

 angled or three-winged, mostly septicidally dehiscent; seeds numerous, two 

 rows in each cell, somewhat flattened, with a thin membranous white or 

 brownish, often loose, testa. Stems usually flexuous and branching from mem- 

 branous or but fibrous-coated corms; leaves few, linear-lanceolate, radical and 

 cauline, the latter alternate and clasping; all with many nerves and transverse 

 veinlets. Flowers one to twenty, showy, terminal, paniculate or umbellate. 



The above generic description is in greater part that of 

 Sereno Watson as given in the "Botany of California." 



The genus is confined to w^estern America, from Nebraska 

 to the Pacific Ocean, and from northern Mexico to British 

 America. 



Section I. Eucalochortus. 



Flowers or fruit more or less nodding; petals strongly incurved or arched, 

 with a broad, transversely crested or more or less hairy pit above the base; 



