141 



Crnaphaliilm albatum 



A much branched perennial (?) upright and rather stout, 

 the stem and leaves covered with a silvery white tomentiim, but 

 the leaves less so on the upper surface: stem about 3 dm. high, 

 very leafy, the lower leaves oblanceolate, 3 cm. long b)' i cm. 

 wide, sessile, the upper becoming smaller: heads numerous and 

 glomerate on the ends of the branches, 5-7 mm. high; involucres 

 woolly only at base, ends of the bracts white and pointed: her- 

 maphrodite flowers very few. 



A species seemingly nearest related to Gnaphalium 

 Wrightii A. Gray. Collected in the canyon of the Thompson 

 river, between the foothills and Estes Park, Larimer county, 

 Colorado, August 16, 1905, no. 3158. 



Carduus laterifolius 



Stems rather slender, 6-8 dm. high, branched above, almost 

 glabrous at the time of flowering: leaves broad, oblong, 1-1.5 

 dm. long, 5-6 cm, wide, sessile by a broad auriculate base but 

 scarcely decurrent on the stem, glabrous above, white beneath 

 with a close short tomentum, three to four large triangular teeth 

 on each side tipped with a weak spine about 3 mm. long, and 

 numerous prickles on the edge of the leaf, the leaves smaller 

 above and becoming entire: heads few and single at the ends of 

 the branches, 2.5 cm. long including the flowers, the portion 

 made by the bracts 1.5 cm. long, 1.5 cm. wide, subtended by one 

 or two small leaves, or some of the heads by larger leaves ex- 

 ceeding them in length: the bracts in four series of successive 

 lengths, the outer 5-7 mm. long, 2 mm. wide at base, glabrous 

 except for slight tomentum on the edges, the outer having a 

 weak spine, the inner a longer soft tip which is somewhat re- 

 flexed; all the bracts except the innermost slightly fimbriate on 

 the upper edges, and having a small glandular ridge which 

 shows as a dark spot on the dried specimens: flowers whitish, 

 the pappus brownish. 



