356 Nelson : New Plants from Wyoming 



branched above, 3-5 dm. high, glabrous as are also the leaves : 

 rather leafy above, more sparsely so downward, the basal early 

 deciduous : leaves entire or remotely denticulate, the basal and 

 lowest cauline short-petioled, oblanceolate, becoming sessile and 

 even auric ulate-clasping upward, the middle cauline oblanceolate, 

 4-7 cm. long, tlie uppermost oblong or reduced to mere bracts : 

 heads rather numerous, 2 cm. broad in anthesis, the rays numer- 

 ous (20-30), about I cm. long: inv^olucral bracts glutinous, 

 strongly recurved in young undeveloped heads, only slightly 

 squarrose at maturity: pappus slender, barbellulate under the 

 compound lens, 2-6, when more than 2 somewhat unequal. 



The decumbent, spreading bases of the otherwise erect stems 

 with their corymbose summits is thoroughly characteristic of this 

 species. Its slender, nearly entire leaves also strongly mark it. 

 Its habitat is in strongly saline ground, on low, clay flats adjacent 

 to lakes and streams. Its root is decidedly woody and probably 

 of several years duration. 



Type specimen in the Herbarium, University of Wyoming, no. 

 4988, by Mr. Klias Nelson, from Sweetwater River, July 27, 1898. 

 Also collected by the w^riter on Wind River in 1894, and dis- 



r 



tributed as (f. squarrosa Dunal, under no. yy]. 



Grindelia erecta 



Biennial, stem single from the enlarged crown of a strong tap- 

 root, erect, glabrous throughout, simple below, corymbose-panicu- 

 lately branched above, 4-8 dm. high : leaves ample, serrate, the 

 teeth short, acute : radical leaves early deciduous the second 

 season, oblanceolate, on slender petioles which equal or exceed the 

 blade, the base of the petiole gradually expanded to a broadish 

 base ; the lower cauline similar and also petioled but becoming 

 sessile upward, 6-10 cm. long ; uppermost smaller, oblong, ses- 

 sile by a broad clasping base ; heads large, subglobosc, usually 

 leafy bracteate ; involucral bracts numerous, moderately glutinous, 

 appressed, with slender recurved tips; rays slender, numerous 

 (15-30), 14-18 mm, long : pappus bristles 2-6, mostly 4, slender, 

 minutely but closely barbellulate. 



In habit suggesting G, grandifiora Hook., of which it is prob- 

 ably the northern representative. It occurs in the canons among 

 the hills, especially in rocky, sandy dry creek beds. 



Type no. 5306, Laramie Hills, Sept 11, 1898. 



