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 f^occose 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 ^nm. 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. li/gciis 

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

 finely dissected leaves. //. macroglottis grows in arid regions 

 from Texas to Arizona and north to Colorado or Utah. 



Arizona : Oak Creek, 1S83, H. H. Rush (type). 



New Mexico: 1851-52, ]Vright, I2j2. 



Texas: Camp 42, 1853, Bigcloiv, yjo: 



Colorado or Utah : 1843, I'yeviont. 



