348 Henderson : New Plants from the Northwest 



No. 3036. Sandy, dry ground, Long Valley, Boise County, 

 Idaho, at an elevation of 4100 ft., July 5, 1895. Type in the Na- 

 tional Herbarium ; co-types in the herbarium of the Idaho Uni- 

 versity and in my private collection. 



J Circium undulatum ciliolatum 



Differs from the type in having the bracts noticeably ciliolate. 



I should hesitate to call this a variety rather than a species, 

 were it not that I find hardly a single specimen of C. undulatum 



a 



in the Gray Herbarium that has not a few slightly ciliated bracts, 

 and that it has all the other characters of the species. In having 

 ciliolated bracts it approaches Circium Grahami, but differs from 

 that species in more cottony leaves and involucre, smaller stature, 

 and in more prickly involucral bracts. 



No number appears with the specimens. I collected this in 

 dry fields near Ashland, southern Oregon, July 8, 1886. Type 

 in the Gray Herbarium ; co-type in my private collection. 



4 Lygodesmia spinosa lanata 



Differs from the type only in being lanate all over, stem more 

 striate, and rather longer peduncles. No. 3229. Gravelly banks 

 and bars of Wood River, Hailey, Blaine County, Idaho, July 21, 

 1895. Type in the National Herbarium ; co-types in the Idaho 

 University herbarium and in my private collection. 



^Microseris nigrescens (§ Nothocalais) 



Scapes 26 cm. high from a thick caudex, glabrous save for a 

 little pubescence below the head : leaves 3-24 cm. high, linear, 

 widest above the middle, 3-10 mm. wide, pale green, with plane 

 and entire margins, glandular mucronate at apex: involucres 15- 

 20 mm. high, campanulate, the bracts subequal, lanceolate, acu- 

 minate, very thin and scarious, mottled with small dark dots : 

 akenes 6-7 mm. long, narrowly fusiform, with rather short neck, 

 the seed reaching almost to the top of the nearly black akene : 

 pappus exceeding the akene, white, from \-% mm. wide, attenuate 

 from near the base : rays purplish on the outside, exceeding the 

 involucre by about 5 mm. 



Certainly closely related to M. troximoides y but differing from 

 this species in the smaller nearly black akene, in the very fine 

 pappus, not half so wide as in that species, and in the rather wider, 



