Rydberg : Rocky Mountain flora r,71 



Pachylophus hirsutus sp. nov. 



Cespitose, almost acaulescent perennial ; leaves oblanceolate 

 in outline, 1-2 dm. long, more or less petioled, runcinate-pinnately 

 lobed or divided, hirsute-villous, especially on the margins and the 

 veins; teeth or lobes acute; hypanthium 8-12 cm. long, slender, 

 widening upward, conspicuously hirsute, at the throat 1 — 1.5 cm. 

 wide ; sepals lanceolate, 3-4 cm. long, soon reflexed ; petals ob- 

 cordate, 3-4 cm. long ; pod 4-5 cm. long, lance-ovoid, about 1 

 cm. in diameter, sessile; ridges low and rounded, slightly if at all 

 tubercled. 



In general habit, this species resembles most P. macrog/ottis 

 and P. marginatus. From the former it differs in the hairy hy- 

 panthium and calyx, the more hairy leaves and the longer and less 

 tubercled fruit. From the latter it is distinguished by the sessile 

 pod and always subacaulescent habit. P. hirsutus grows at an 

 altitude of 2,200-3,000 m. 



Colorado: Georgetown, 1895, Rydberg (type); mountains 

 between Sunshine and Ward, 1902, Tweedy 3094; South Park, 

 1872, Wolf 132 ; Ruxton, 1896, Clements 213; Pike's Peak, 

 1896, Shear 3713; Mancos, i8g8, Bafier, Earle & Tracy 141 , 

 Georgetown, 1885, Patterson; vicinity of Como, 1895, Cowen ; 

 also 1896, Shear 4376 ; Empire, 1893, Bethel; Como, 1895, 

 Crandall S ; Pennock, 1 896, Crandall 10. 



Utah : Salt Lake City, 1880, M. E.Jones 1746 ; Diamond. 

 Valley, 1902, Gooding 840. 



Pachylophus caulescens sp. nov. 



More or less caulescent perennial ; stem 1-2 dm. high, angled, 

 leaves with the long petioles about 2 dm. long ; blades lanceolate 

 or ovate-lanceolate, about 3 cm. wide, pubescent on the margins 

 and veins, sinuately dentate with a few lobes on the petiole ; hy- 

 panthium about 9 cm. long, glabrous, at the throat nearly 1.5 cm. 

 wide ; petals about 2.5 cm. long, obovate ; pod sessile, about 3 cm. 

 long, lance-ovoid with rounded low ridges. 



In habit the species resembles P. eximins, but that species has 

 a hirsute hypanthium and calyx and the ridges of the fruit with 

 almost foliaceous crests. 



Colorado: Palisades, 1894, Crandall 1 2 (type in herb. Col- 

 umbia University). 



