Box.— Vo L. II. ] PURD Y—CAL OCHOR TUS. 1 3 1 



The above description is drawn from specimens collected 

 near the type locality. 



•■ 



I Group 2. Rocky Mountain Mariposa. 



Gland tiansverse and narrow, extending across petal from side to side; 

 leaf usually as in Section I. 



22. Calochortus gunnisoni Watson. 



Cahchortus gun7iisoniV\lATSOti, Bot. King's Rept. Ex. 40th Par., p. 348. 



The usually single radical leaf linear-lanceolate, acute, flat, and not chan- 

 neled; stem bulbiferous at base, a foot or so high, erect; inflorescence usually 

 umbellate, the umbels 1-4-flowered and subtended by two or more rather 

 broadly lanceolate, acuminate bracts; one or several cauline leaves below the 

 umbel; sepals narrowly ovate, acute, with scarious margins, yellowish within, 

 often marked with dark blue; petals creamy white, often banded with dark 

 blue above gland, cuneate, with a broad claw, usually rather truncated above, 

 sometimes slightly rounded, 12-15 lines long; gland narrow, extending trans- 

 versely nearly from side to side of petal, and covered with short, dense, 

 glandular clavate hairs; anthers equalling filaments, ovate, cuspidately acute; 

 capsule cylindric-triangular. 



Described from an average sized specimen from Boulder, 

 Colorado. The species is found on the eastern side of the 

 Rocky Mountains from Nebraska to New Mexico. 



"Rocky Mountains of Colorado. Collected also in Utah 

 by Gunnison." 



The color of the petals is variable, flowers from different 

 localities showing all the gradations from white, through 

 pink, lilac, purple, and blue, with considerable variety in 

 the color of the bands marking the lower portion of the 

 petal; but a greenish tinge and greenish hairs characterize 

 them all. Some of these color forms have been named. 



Group 3. Weed's Mariposa. 



Petals covered with slender hairs; capsule narrowly oblong, with thick 

 obtusely angled cells; radical leaf as in C. albus (Section i), solitary, long, 

 shining, and not channeled; bulb heavily coated with coarse black fiber. 



