A. PARRYI — A. STELLERIANA. 67 



strictly linear, the sides being nearly parallel, and the apex is often obtuse or only barely 

 acute. If the assumption is correct that A. parryi is an ofifshoot from a macrobotrys-like 

 ancestor, then it is widely separated geographically from its nearest relatives. It is 

 apparently an isolated species that became stranded on the higher peaks of the southern 

 Rocky Mountains, perhaps during one of the migrations of the glacial period, and has 

 there developed its unique characters. More copious collections are much needed 

 and especially a fuller exploration of the northern Rocky Mountains in order to discover 

 forms connecting this with macrobotrys, if such forms exist. 



The relationship with A. norvegica is less close. It is difficult to prepare a key that will 

 separate parryi from all of the variations of this species, but each of the subspecies 

 differs in essential characters. The only one that inhabits the same general region is 

 saxatilis, and this is so difTerent in its large heads, with numerous large flowers, as well 

 as in the foliage, that any direct phylogenetic connection is out of the question. 



Rydberg has recently described as A. cooleyae a new species which he places next to 

 parryi, apparently considering it a segregate from this. It is discussed in the present 

 paper among the minor variations of A. norvegica. 



ECOLOGY AND USES. 

 Artemisia parryi is a rootstock perennial, forming clans in the subalpine zone in 

 southern Colorado and western Utah. It is too infrequent to be of use. 



8. ARTEMISIA STELLERIANA Besser, Nouv. Mem. Soc. Mosc. 3:79, 1834. Plate 5. 

 Beach Sagewort. 



A stout perennial herb, from a creeping cespitose somewhat woody rootstock, 3 to 5 

 dm. high, inodorous; stems crowded, erect or the base decumbent, simple up to the 

 inflorescence, densely white-tomentose or white-floccose, striate; basal leaves crowded, 

 petioled, 3 to 8 cm. long, 0.7 to 3 cm. wide, obovate or spatulate, with a few coarse obtuse 

 lobes or teeth near the summit, densely white-tomentose on both sides; principal and 

 upper leaves sessile or subsessile, 2 to 6 cm. long, 1.5 to 4 cm. wide, obovate or broadly 

 oblanceolate in outline, pinnately lobed, the lobes 3 to 9, elliptic and very obtuse, the 

 whole leaf densely white-tomentose on both sides; inflorescence a dense panicle, 10 

 to 20 cm. long, 2 to 4 cm. broad, sometimes almost raceme-like; heads heterogamous, 

 erect or nodding, on peduncles 2 mm. or less long, often subsessile; involucre hemispheric, 

 6 to 7 mm. high, 6 to 9 mm. broad; bracts 9 to 12, in 3 series, the outer ones broadly 

 lanceolate and acute, the middle ones about one-half longer and obtuse, the innermost 

 about as long as the middle series, elliptic, largely scarious, and acute, all densely tomen- 

 tose on exposed parts; ray-flowers 7 to 12, fertile, corolla subcylindric, obscurely 2-toothed 

 or merely erose around the orifice, 2 to 2.5 mm. long, granuliferous; disk-flowers 25 to 

 40, fertile, corolla trumpet-shaped, 3.5 to 4 mm. long, deeply 5-toothed, resinous-granu- 

 liferous; style-branches truncate, erose across the summit; achenes nearly terete but 

 narrowed at base and slightly rounded to the summit, glabrous. 



Sandy shores along the coast from Quebec to New Jersey, and also inland from Ontario 

 to New York, Wisconsin, and perhaps elsewhere; also in eastern Asia and in some parts 

 of Europe. Type locality. Port of Petropaulovski, Kamchatka. Collections: Strand 

 west of Riviere Blanche, Quebec, Fernald and Collins 762 (Or) ; sandy seashore, Falmouth, 

 Massachusetts, July 2, 1895, Deane (Gr) ; sandy shore, Middletown, Rhode Island, July 4, 

 1909, Williams (Gr); New London, Connecticut, June 24, 1892, Learned (Gr); sand dunes. 

 Five-mile Beach, New Jersey, MacElwee IJ^I^l (NY); sandy shore, Oneida Lake, New 

 York, Haberer 2311 (Gr); Sandy Hook, New Jersey, June 19, 1900, Williams (Gr); 

 lake-shore sands, near Port Huron, Michigan, Dodge 5 (NY). 



