436 



LILIACEAE 





13. Calochortus lobbii (Baker) Purdy. 

 Lobb's Star Tulip. Fig. 1069. 



CalocJwrtiis ele^ans lobbii Baker, Tourn. Linn. Soc. 14: 305. 

 1875. 



Calochortus lobbii Purdy, Proc. Calif. Acad. III. 2: 122. 1901. 

 Calochortus subalpinus Piper, Contr. Nat. Herb. 11: 195. 

 1906. 



Stems flexuoiis, erect, 15-20 cm. high. Sepals 

 lanceolate-ovate, 15-25 mm. long, strongly arched at 

 base forming a shallow pit marked by a purple 

 spot inside ; petals creamy white, purplish at base, 

 obovate or rhombic-orbicular, 2-3 cm. long, slightly 

 hairy over the inner surface above the gland, to near 

 the apex ; gland minutely puberulent, covered above 

 by a narrow entire scale, this covered with long 

 retrorse hairs ; anthers 7-8 mm. long, long-beaked, 

 sagittate at base, equalling the broadly winged fila- 

 ments ; capsule nodding, 2-3 cm. long, narrowly 

 elliptic, acutish at both ends. 



Subalpine slopes and meadows, Hudsonian Zone; Mount 

 Adams, Washington, to the Three Sisters, Oregon. Type 

 locality: Mount Jefferson, Oregon. 



14. Calochortus nudus S. Wats. 

 Naked Star Tulip. Fig. 1070. 



Calochortus elegans subclavatus Baker, Tourn. Linn. Soc. 



14: 305. 1875. 

 Calochortus nudus S. Wats. Proc. Am. Acad. 14: 263. 



1879. 



Stem very slender, rather weak, 5-10 cm. 

 high. Flowers 1-7, in a single umbel, open- 

 campanulate, erect ; sepals narrowly oblong- 

 ovate, acute, 10-12 mm. long ; petals greenis'i 

 white or lilac, 12-16 mm. long, obovate, rounded 

 or obtuse, denticulate, glabrous on the inner 

 surface, or sometimes with a few hairs at the 

 ends of the narrow closely appressed scale 

 covering the upper margin of the gland; anthers 

 oblong, 4-6 mm. long, blue, a third shorter than 

 the subulate filaments ; capsule oblong, acute at 

 both ends, 15-20 mm. long. 



Moist grassy places, Transition and (mainly) Cana- 

 dian Zones; Sierra Nevada, California, from Plumas to 

 Tulare Counties. Type locality: Yosemite Valley, Cali- 

 fornia. 



15. Calochortus umbellatus \\'oud. 

 Oakland Star Tulip. Fig. 1071. 



Calochortus umbellatus Wood, Proc. Acad. Philad. 1868: 168. 



1868. 

 Calochortus collinus Lemmon, Erythea 3: 49. 1895. 



Stem 8-30 cm. high, flexuous. Umbel usually 5-10- 

 fiowered ; sepals ovate to oblong-lanceolate ; greenish 

 white rarely tinged with lilac, 12-17 inm. long; petals 

 white, rarel}' tinged with lilac, broadly cuneate-obovate, 

 15-20 mm. long, truncate-rounded, denticulate, naked 

 except for a few hairs on either side and just above 

 the gland ; scale triangular, appressed to the upper 

 portion of the gland, fimbriate on the margin ; fiiainents 

 twice as long as the anthers, slender; anthers oblong, 

 obtuse, 3 mm. long, white ; capsule nodding, broadly 

 elliptic, rounded at both ends, 10-12 mm. long and nearly 

 as broad. 



On dry, wooded hillsides. Upper Sonoran Zone; California 

 Coast Ranges, Lake and Mendocino to Marin and Alameda Coun- 

 ties. Type locality: Oakland, California. 



