Rydberg: Rocky Mountain flora 135 



the margin of the narrower base, oblanceolate, sessile or short- 

 petioled, usually more or less runcmate -toothed ; scape glabrous ; 

 involucres turbinate-campanulate, about i cm. high, more or less 

 glandular-hairy with yellowish hairs and slightly tomentulose 

 when young ; bracts linear-lanceolate, acuminate ; rays yellow, 

 about I cm. long ; achenes brown, strongly ribbed ; pappus white. 



This has been confused with C. nmcinata, but that species has 



thinner hairy leaves, w^hich are scarcely glaucous. C. confusa is 



really more closely related to C. glatica, from which it differs only 



in the pubescence of the involucre and the usually broader leaves. 



'ifi 



North Dakota and Alberta to 



Nebraska and Colorado. As the type may be regarded : 



Wy 



^Crepis denticulata sp. nov. 



Scapose perennial ; leaves basal, obovate or more rarely obo- 

 vate-oblanceolate, glabrous or nearly sO; obtuse, less than I cm. 

 long, denticulate or with a few lobes towards th^^^ase; scape 1-3 

 dm. high, glabrous up to the inflorescence; involucre turbinate, 

 scarcely i cm. high, hirsute with glandular black hairs, as well as 

 the branches of the inflorescence ; ligules about 8 mm. long; achenes 

 brown, strongly ribbed ; pappus white. 



This species is nearest related to C, riparia^ but is a much 



smaller plant in every part and with glabrous leaves. It grows in 



the mountains. 



( 



Lake John, North Park, 1898, Shear & Bessey 



Wyoming: Fort Bridger, 1873, Porter. 



Utah : 1875, Parry 62 ; Jordan Valley, 1869, Watson Jr2. 



J 



Crepis angustata sp. nov. 



Crepis gracilis Rydb. Mem. N. Y. Bot. Card I : 461, in part, 

 1900. Not C. occidcntaUs gracilis D. C. Eaton. 

 Perennial, whole plant more or less canescent-puberulent and 

 scabrous ; stem 3-7 dm. high ; basal leaves and lower stem-leaves 

 petloled, runcinate ; main body narrowly linear-lanceolate, acu- 

 minate ; lobes linear or linear-lanceolate, usually curved forward ; 

 upper stem-leaves entire and sessile ; involucre cylindric, about I 

 cm. high and 5 mm. broad ; bracts 5-7, linear-lanceolate, acute, 

 canescent but not glandular, with a few minute calyculate ones 

 below ; flowers 5-10. 



