Rydberg: Studies on the Rocky Mountain flora 325 



Hesperis pygmaeus Hook. Fl. Bor.-Am. i: 60. 1830. 

 Erysimum pygmaeum J. Gay, Erysim. Nov. 4. 1842. 



Cheirinia brachycarpa sp. nov. 



Biennial ; stem 3-6 dm. high, from a taproot, grayish canescent, 

 somewhat striate; leaves all linear-spatulate or oblanceolate, 5-10 

 cm. long, sparingly canescent; the lower petioled and often mi- 

 nutely denticulate, the upper ones mostly entire; sepals oblong, 

 about 1 cm. long, yellowish green; petals nearly 2 cm. long; claw 

 long and slender; blades rounded -obovate, about 7 mm. wide, 

 bright yellow; fruiting pedicels about 8 mm. long, strongly ascend- 

 ing; pods erect, 4-6 cm. long, 2.5 mm. thick; beak about 1 mm. 

 long. 



This species resembles C. oblanceolata, but the pod is much 

 thicker and shorter and the flowers larger. It differs from C. 

 aspera in its ascending, not divergent, and shorter pod. It grows 

 on dry hillsides at an altitude of 2,500-3,000 m. 



Utah: Abajo Mountains, August 17-20, 191 1, Rydberg & 

 Garrett 9713 (type, in herb. N. Y. Bot. Garden, flowers and young 

 fruit); 9763 (well-developed fruit); Cottonwood Canyon, June 27 

 and July 1, 1905, Rydberg & Carlton 6333 and 6570. 



Sophia leptostylis sp. nov. 



Annual; stem 3-6 dm. high, rather simple below, sparingly 

 stellate-pubescent or glabrous; leaves 3-10 cm. long, obovate in 

 outline, twice pinnatifid, with oblong divisions, sparingly stellate- 

 pubescent; the uppermost reduced and with narrower lobes; 

 flowers numerous; sepals elliptic, yellow, 1-1.5 mm. long; petals 

 spatulate, a little surpassing the sepals; pedicels in fruit 5-8 mm. 

 long, spreading-ascending; pods about 5 mm. long, tapering to 

 each end, nearly erect, somewhat curved; styles 0.5-0.7 mm. long; 

 seeds more or less in two rows. 



This resembles somewhat 5. procera, especially in the form of 

 the pods, but the inflorescence is more open and the pedicels more 

 spreading. It grows at an altitude of 2,000-3,000 m. 



Utah: Big Cottonwood Canyon, July 4, 1905, Rydberg & Carl- 

 ton 6629 (type, in herb. N. Y. Bot. Garden); also June 29, 6498, 

 and July 8, 6806; Big Cottonwood Canyon, June 1905, Garrett 

 1361; near Milford, June 22, 1905, Rydberg & Carlton 6283; moun- 

 tains north of Bullion Creek, near Marysvale, July 23, Rydberg & 



