Rydberg : Studies on the Rocky Mountain Flora 636 



to find ; but from the route that Nuttall took it is undoubtedly- 

 some stream of the Green River system. 



8. Hymenopappus macroglottis sp. nov. 



Shghtly tomentose perennial with a woody caudex. Stems 

 several, 3-4 dm. high, striate, slightly floccose when young, with 

 1-3 leaves : leaves mostly basal, about i dm. long, bi-pinnately 

 divided into linear lobes 8—25 mm. long, 1-2 mm. wide ; stem- 

 leaves generally simply pinnate or the uppermost simple : heads 

 few, corymbose, 12 mm. high and 12-15 mrn. broad, hemispher- 

 ical : bracts oblong, with very narrow yellowish scarious mar- 

 gins : corolla yellow ; tube about 2 mm. long ; throat deeply 

 campanulate, 3—4 mm. long, 3—4 times as long as the lobes : 

 achenes elongated obpyramidal, about 5 mm. long, hirsute: scales 

 of the pappus about i mm. long. 



The long and broad lobes of the leaves and the long throat of 

 the corolla distinguishes it from other species of the Rocky Moun- 

 tains. The latter character it has common with only H. higens 

 Greene from southern California. This has, however, much more 

 finely dissected leav^es. //. macroglottis grows in arid regions 

 from Texas to Arizona and north to Colorado or Utah. 



Arizona : Oak Creek, 1883, H. H. Rusby (type). 



New Mexico: 1851-52, Wright, 12^2. 



Texas: Camp 42, 1853, Bigeiozo, yjo. 



Colorado or Utah : 1843, Fremont. 



