612 OsTERHOUT : New plants from Colorado 



Type specimens collected along the Cache LaPouder river at 

 New Windsor, Colorado, September ii, 1904, Osterhout 2^4.1. 



" Senecio lanatifolius sp. no v. 



Senecio Fendlcri lanatus Osterhout, Bull. Torrey Club 31 : 358. 



1904. Not Senecio lanatus L. 



Perennial, T-2 dm. high, several-stemmed from the root, 



usually branched, very leafy to the inflorescence ; leaves linear, 

 pectinate-pinnatifid, the divisions crenate-toothed with inrolled 

 edges, the upper leaves becoming bract-like ; both stem and 

 leaves pannose-canescent ; peduncles very short ; heads many, 

 crowded, almost i cm. long, of about seven glabrous bracts in a 

 single row and about 15 flowers; achenes glabrous ; rays none. 



J 



667 



J 



Carduus araneosus sp. nov. 



Perennial ; stem about 5 dm. high, rather slender, branched 

 from about the middle, having a little light tomentum at the time 

 of flowering; lowest leaves not known ; stem-leaves linear, 10-12 

 cm. long, canescent beneath with a close tomentum, bright-green 

 and glabrous above, pinnatifid, the lobes oblong, each tipped by a 

 moderate spine, decurrent on the stem for 3 cm.; heads soHtary 

 on peduncles 5-10 cm. long, usually subtended by a linear elon- 

 gated leaf; involucral bracts in about three series, the outer series 

 about I cm. long, a little more than half the length of the second, 

 both gradually tapering from a base i mm. wide to a rigid prickly 

 point, and both long-woolly from the margins, the inner bracts 

 weak-pointed, fimbriate-margined and purple-tinged ; flowers whit- 

 ish ; pappus tawny, sparingly plumose. 



A species somewhat related to C. Parryi (A. Gray) Greene, but 

 a slenderer plant, the leaves more tomentose beneath and decurrent 

 on the stem. Collected at Red Cliff, Eagle County, Colorado, 

 June 26, 1900, Osterhout 2i6g, 



Carduus spathulatus sp. nov. 



L 



Perennial ; stem rather slender, 8 dm, high or more, bearing 

 some slight tomentum at the time of flowering, branched toward 

 the summit ; lower leaves spatulate, pointed, 1-2 dm. long, 3-4 

 cm. wide, remotely serrate and with smaller serrations between 

 the teeth, all pointed with small spines ; these succeeded by leaves 

 on winged petioles nearly i dm. long, pinnately cleft, the divisions 



