BOTANY OF THE ROUTE. 53 



rays, it is hardly distinguishable. Indeed, this and G. nana. Nutt. (wrongly joined to G. 

 humilis, Hook. & Arn.) are probably to be referred to G. squarrosa.&quot; GKAY. 

 CHBYSOPSIS VILLOSA, Nutt. Yakima valley, August 15. 



XANTHIUM STRUMARIUM, var. Canadense, Torr. & Gray. Yakima valley, August 20 ; common, 

 2 feet high. 



HELIANTHUS LENTICULARIS, Dougl. Banks of Columbia, near latitude 48; September 20. 

 Common ; growing 6 feet high. 



GAILLAEDIA ARISTATA, Pursh. Abundant on prairies from Vancouver eastward; June to 

 October. 



HELENIUM AUTUMNALE, Linn. Collected in flower on southern banks of the Columbia ; 

 November, common. 



ARTEMISIA CANADENSIS, Michx. Common on the Upper Columbia and its branches ; collected 

 in flower about September 1. 



A. DRACUNCULOIDES, Pursh. Noticed only on sandy hills near mouth of the Okanagan river; 

 October 3, in flower. 



A. TRIDENTATA, Nutt. A shrub 3 to 7 feet in height, with stems six inches in diameter at 

 the base. Commonly called &quot;Wild Sage,&quot; but with more of the flavor of turpentine, combined 

 with intense bitterness, which it imparts to the flesh of the &quot;Sagefowl&quot; feeding on its leaves, 

 as well as to meat laid on it for a short time. Common on the sandy plains of the interior, 

 commencing to flower in October. 



A. TRIFIDA, Nutt. In general appearance and leaves much resembles the last, but is only 

 2 to 3 feet high, and not strongly scented. The top appears to be herbaceous. Seen only on 

 the Okanagan river, in flower, October 3. 



A. DOUGLASIANA, Nutt. Common in the valley of the Yakima river. Herbaceous, 2-3 feet 

 high, flowering August 20. 



A. LUDOVICIANA, Nutt. In valleys near the Columbia. September 18. 

 A. FRIGIDA, Willd. Met with only on the upper part of the Okanagan river, near latitude 

 49; in flowers October 9. 



ARNICA CHAMISSONIS, Less. In flower on southern bank of the Columbia, near the Dalles, 

 November 10. 



MALACOTHRIX CREPOIDES, (n. sp.;) &quot;glabrous, subcaulescent; stems numerous from an appa 

 rently perennial root, slender, diffuse, (a span or more in length,) sparingly dichotomously 

 paniculate, the slender naked branches or peduncles bearing single heads; leaves mostly radical, 

 lanceolate, runcinate pinnatifid, tapering into a petiole, the few cauline sessile by a hastate or 

 auriculate base, mostly small and bract-like ; involucre somewhat pubescent, of lanceolate, 

 subulate scales, with a few setaceous calyculate bracts ; achenia somewhat contracted at both 

 ends, strongly ribbed, the coroniform border obsolete ; bristles of the pappus consimilar and 

 equally deciduous. Radical leaves thin, 3 or 4 inches long, including the short and margined 

 petiole. Stems or scapes weak, sometimes sparsely hairy at the base, not much surpassing the 

 leaves. Heads not larger than those of M. obtusa, Benth. Involucre three lines long. Flowers 

 yellow. Achenia a line long, fusiform-oblong, being somewhat contracted at the base and apex, 

 the terminal areola therefore smaller than the greatest diameter of the achenium. Pappus of 

 very soft and fine bristles, which are barbellulate at the base and early deciduous, with no 

 stronger and more persistent ones intermixed.&quot; GRAY. 



Collected near the Columbia river, about latitude 48, in September. 



