SUNELOWSS FAMILY 411 
& Gray, loc. cit.; A. bargelie subsp. wormskioldii Pip Contr, U.S. Nat. Herb. 11: 587. 1906; A. ripi- 
co. bony Ry db. N. Amer. FI. 256. 1916; A. comer Reed pee BE Hall & Clem. Carnegie Inst. Wash. 
Publ. No. 326: 123.1923 a — ris var. —— Pens E. Peck, Man. Pl. Oregon 768. 1941; A. borealis 
€ wormskioldit nee ‘Ls nadien 71 4: A, campestris var worauniatae Cronquist, Leaflets 
West. Bot 1950.) Miriwwapioe gc wm 1-4 hig oe often with . ——— base; stems crowded, erect 
r twice tern ely divided into 
or oe pea leafy below, less so up into the oe ality ea o ¢c 
mostly linear or linear-filiform lobes or sometimes pinnately divas, sot tig 4 sericeous or villous, the upper 
surface sometimes glabrate, 2-10 cm. ong, 0.7-4 cm. wide, reduced upward, the uppermost often entire; in- 
florescence spiciform, recemiform or narrowly paniculiform, ‘the tas is erect to nodding; involucre hemispheric, 
3—4 mm. tall, 3.5—-5 mm. broad, the phyliaries brownish or yellowish green with a brownish median line, glabrous 
to densely villous; ray-florets 10-25; disk-florets 15-30; achenes glabrous, ese of the disk-florets abortive 
receptacle glabrous. 
Open places in sandy soil, along the Columbia River between Oregon and tc hewn oan “2% in the Cascade 
Mountains of Washin es to northern Montana and northward, aid in Siberia. Type loc Siberia 
Art sia campestris ape age (Michx.) Hall & Clem. Carnegie Inst. Was Pubr No, 326: 122. 
1923. (artemisia se Mic Bor. Amer. 2: 129. = A, ptr ee Bin Wat Proc mer. Acad. 
25: 133. 1890.) Root koscapere 5 stem plea single; leaves jin o r plants m ostly canescent gs es young, glabrate; 
otherwise pret like subsp. pac A few plants of this are gs und in "the Sr t Sound and Columbia Gorge 
areas; common from PRoeky Mountains eastward. Type locality: sandy banks of ath Missoari River. 
The plants here included in A. —— Ti er eg to a number of different races. The e ntire group is 
0 ood and i A campes: - 
come established North America only in a eastern pets ur western plants are mostly s of two taxa 
here referred to as A. campestris subsp. borealis and A. campestris subsp. pacifica, which have been variously 
treated as sectiek: “subspecies, and varieties, a even split into a number of species. imi 
ll i 
m 
ment of a sete: rg? po Uy The form with gate as Peete is separa some as a separate ee 
(A. spithamea Pursh, A. bore alis var, purshit Ege: Ber. ig nly “spithamen (Posey all m.), 
ee to be ogra ifica’ 
characters. he Sentara River ‘form also hag been cacitel erate with more ju on, od lea 
ecological grounds—as 4 . ripico ole Ryd oe A. borealis var. wormskioldti Bess., or A. campe on oy wo mebioldit 
(Bess.) Cronquis 
igi 
emisia dracunculus 
