76 



GENUS ARTEMISIA. 



11^. Artemisia vulgaris heterophylla (Nuttall). — Stems 3 to 15 or even 20 dm. 

 high, from horizontal rootstocks, often in thicket formation on good soil, or scattered; 

 lower leaves oblanceolate or obovate, coarsely few-lobed; principal leaves oblanceolate 

 or broadly elliptic in outline, often somewhat spatulate, long-acute, 7 to 15 cm. long, 

 1.5 to 5 or 10 cm. wide, saliently cut-toothed or cleft, the lobes few, lanceolate, acute, and 

 forward-pointing, or sometimes the leaves mostly entire (variations illustrated on p. 41), 

 and those of the inflorescence usually so and much reduced, all sparsely tomentulose and 

 green above, densely white-tomentose beneath, the margins obscurely revolute or plane; 

 inflorescence an elongated pyramidal panicle, 2 to 8 cm. broad; involucre campanulate, 

 3 to 4 mm. high, 2.5 to 3.5 mm. broad, gray-tomentose, 15- to 30-fiowered {A. heterophylla 

 Nuttall, Trans. Am. Phil. Soc. II, 400, 1841). Saskatchewan and Idaho to the Pacific 

 Coast from British Columbia to Lower California; the most abundant subspecies in 

 Oregon and California. Type locality, "Rocky Mountains by streams." Collections: 

 Type collection, Nuttall (Or) ; near Red Lodge, Montana, Rose 664 (US) ; Lake Pend 

 d'Oreille, northern Idaho, Sandberg 822 (US); Tamarack, Washington County, Idaho, 

 , Clark 227 (UC) ; West Klickitat County, Washington, Suksdorf 871 (UC) ; Wawawai, 

 Snake River Canon, Washington, Piper 6^66 (US, type of A. atomifera Piper, minor 

 variation 4); Grants Pass, Oregon, July 14, 1887, Howell (UC); damp land near Yreka, 

 northern Cahfornia, Butler 1798 (UC); valley of the Van Duzen River, California, 

 Tracy 3976 (UC); Chico, California, Heller 11135 (Gr, NY, UC, US); Red Clover Valley, 

 northern Sierra Nevada Mountains, Cahfornia, Heller and Kennedy 8876 (UC, NY, 

 US, a form common in the mountains, with thin and rather narrow leaves ; intermediate 

 to subspecies ludoviciana) ; Pacific Grove, Monterey County, California, Heller 7195 

 (DS, UC) ; Clear Creek Canon, western Nevada, Baker 1458 (Gr, NY, UC) ; near Mesmer, 

 Los Angeles County, California, Abrams 2955 (DS, Gr, NY, UC, US); Avalon, Santa 

 Catalina Island, September 1897, Trask (US). 



\\h. Artemisia vulgaris litoralis (Suksdorf). — Stems 6 to 15 dm. high (or more), 

 from large sometimes suffrutescent rootstocks; lower leaves oblanceolate or obovate, 

 coarsely few-toothed or few-lobed ; principal leaves broadly lanceolate or broadly elliptic 

 in outline, sometimes nearly oblanceolate, gradually acute, 7 to 15 cm. long, 1.5 to 3 cm. 

 wide, with a few prominent teeth or short lobes, these lanceolate acute and forward- 

 pointing, some of the leaves commonly entire, especially the narrow elongated ones of 

 the inflorescence, all very sparsely tomentulose and green above, densely white-tomentose 

 beneath, the margins very narrowly revolute or plane; inflorescence an elongated leafy 

 panicle, 3 to 9 cm. broad; involucre ovoid, 3 to 4 mm. high, 2 to 2.5 mm. broad, obscurely 

 tomentulose or apparently glabrous, yellowish-green and shining, 8- to 12-flowered. 

 {A. vulgaris var. litoralis Suksdorf, Deut. Bot. Monats. 18:98, 1900.) Along the 

 Pacific Coast from British Columbia to Cape Mendocino, California; common on the 

 bluffs of Puget Sound. Type locahty, stony sea-beaches near Fairhaven, Washington. 

 Collections: Chilliwack Valley, British Columbia, Macoun 26352 (Gr) ; Vancouver Island, 

 June 28, 1887, Macoun (US) ; Chuckanut Bay, Washington, July 5, 1890, Suksdorf 980 

 (NY, UC, US, apparently the type collection); Fairhaven, Washington, Piper 2808 

 (Gr) ; east of Scenic, Washington, Otis 8O4 (SF) ; Quiniault Valley, Washington, Conard 

 260 (Gr); mouth of the Umpqua River, Oregon, June, 1887, Howell (NY, UC, US); 

 Shelter Cove, Humboldt County, Cahfornia, Bolander 6482 (Gr); near Scotia, Humboldt 

 County, California, Davy and Blasdale 5544 (UC); Cape Mendocino, California, Tracy 

 4973 (UC). 



111. Artemisia vulgaris ludoviciana (Nuttall). — Stems erect, 3 to 10 dm. high, 

 often crowded on the rootstocks or scattered; lower leaves oblanceolate, lobed or entire; 

 principal leaves linear or oblanceolate in outline, 3 to 9 cm. long, 0.5 to 2 cm. wide, 



