Osterhout : New Plants from Colorado 507 



entire : the upper half or two thirds of the stem flower-bearing in 

 a rather strict panicle of numerous small heads of about 6 imper- 

 fect and 8 perfect disk-flowers, 3.5 mm. x 2.5 mm., the involucral 

 bracts in about three series, tomentose. 



Collected near Dale Creek, Larimer Co., Colorado, September 

 7, 1899 (no. 2010), and in Estes Park, Larimer Co., Colorado, Au- 

 gust, 1895 (no. 1322). 



* 



v Artemisia spiciformis 



■ 



A shrubby perennial, the fastigiate branches about .5 m. high, 

 the leaves and newer growth canescently pubescent, the older growth 

 retaining some pubescence : leaves oblanceolate, the longer ones 

 3.5 cm. long, tapering to a slender petiole, irregularly toothed or 

 notched at the apex, some tridentate, occasionally a pair of teeth 

 below the three terminal ones, some trifid with the divisions toothed: 

 heads comparatively few in a spike-like raceme, obconical, rather 

 large, 6 mm. long, single and sessile in the axils of the bracts or 

 terminating the branches, about 12-flowered, the flowers all perfect 

 and fertile ; the accessory bracts of the involucre ovate, pubescent, 

 the inner oblong, scarious, showing a green medial line. 



The heads resemble those of Artemisia cana, while the leaves 

 are like those of A. tridcntata. Collected in North Park, Larimer 

 Co., Colorado, September 3, 1899 (no. 201 1). 



i/ 



Artemisia caxa viscidula 



Shrubby, fastigiately branched, 6-8 dm. high, green and some- 

 what glutinous, the light tomentum of the stem and leaves ob- 

 scured by the glutinous coating : leaves 3-4 cm. long, 2 mm. 

 wide, tapering to both ends : heads numerous in a leafy panicle 4 

 mm. long, five- to eight-flowered, all perfect and fertile, the outer 

 bracts having the glutinous character of the leaves, usually sub- 

 tended by one or two linear accessory bracts : immature achenes 

 granular, glutinous. 



Probably a good species, but having so much resemblance to 

 A. cana that I have thought best for the present to make it a 

 variety of that. Collected at Steamboat Springs, Routt Co., Colo- 

 rado, September 1, 1899 (no. 2012). 



- Agoseris montana 



Perennial from a several-stemmed rootstock : the scapes leaf- 

 less, flowering when about I dm. high and elongating to 2.5 or 

 3 dm., woolly-pubescent beneath the involucre and at the base : 

 leaves oblanceolate, 1-2 dm. long including the narrow winged 



