264 NORTH AMERICAN FLORA [VOLUME 34 
nodding, in a raceme; individual peduncles 1-10 cm. long, erect; involucre depressed-hemi- 
spheric, 4-5 mm. high, 7-10 mm. broad; bracts 12-15, in 3 series, glabrous or nearly so, nearly 
equal, the outer ovate and acute, the inner obovate and obtuse or acutish, with a lanceolate 
green central portion and broad black erose margins; ray-flowers 5-10; corollas villous, 2.5 
mm. long; disk-flowers 40-90; corollas trumpet-shaped, villous, 3 mm. long; achenes 2 mm. 
long. 
TYPE LOCALITY: Unalaschka. 
DistRIBuTION: Alaska to Washington; also in eastern Siberia. 
ILLUSTRATION: Nouv. Mém. Soc. Nat. Mosc. 3: pl. 4, f. y, ¢. 
42. Artemisia macrobotrys Ledeb. Fl. Alt. 4: 73. 1833. 
Artemisia tanacetifolia 1,. Sp. Pl. 848, in part. 1753. 
Artemisia laciniata B Willd. Sp. Pl. 3: 1843. 1804. 
Artemisia latifolia Ledeb. Mém. Acad. St.-Pétersb. 5: 569, in part. 1815. 
Artemisia Krasheninnikowiana Besser, Nouv. Mém. Soc. Nat. Mosc. 3: 41. 1834. 
A perennial, with a creeping rootstock; stem 2-4 dm. high, glabrous or sparingly pilose; 
lower leaves petioled; blades broadly ovate in outline, twice or thrice pinnately divided, spar- 
ingly pilose or glabrate; principal divisions spreading, obovate in outline, the ultimate ones 
linear-oblong, obtuse or acutish, spreading; upper leaves less divided with narrower acute 
divisions; heads many or several in simple or branched racemes, nodding; individual peduncles 
short; involucre depressed-hemispheric, 3-4 mm. high, 5-6 mm. broad; bracts sparingly villous, 
15-18, in 3 series, oval, obtuse, with dark-brown or black erose margins, the outer slightly 
shorter; ray-flowers 10-12; corollas viilous, nearly 2 mm. long; disk-flowers 30-40; corollas 
yellow, villous, trumpet-shaped, 3 mm. long; achenes nearly 2 mm. long. 
TYPE LocALity: Plains on the Kerlyk River, Siberia. 
DIsTRIBUTION: Yukon, Alaska, and Siberia. 
InLustRations: Gmel. Fl. Sib. 2: p. 58; Ledeb. Ic. Fl. Ross. pl. 467. 
43. Artemisia laevigata Standley, Smiths. Misc. Coll. 56%%: 2. 
1912. 
A low perennial, with a rootstock; stems 2.5-3 dm. high, glabrous, reddish, striate; basal 
leaves slender-petioled, twice pinnatifid into oblong-linear, acute divisions, glabrous, bright- 
green, 2-6 cm. long; stem-leaves mostly once pinnatifid into narrow acute divisions or those 
of the inflorescence linear-oblong and entire; heads 5—8, nodding, in a racemose inflorescence; 
peduncles 7-16 mm. long; involucre 8-10 mm. broad; bracts glabrous, in 2 or 3 series, ovate, 
obtuse, green on the back, with broad dark-brown erose margins; receptacle glabrous; ray- 
flowers 5—10, pistillate; corollas nearly 2 mm. long; disk-flowers fertile; corollas trumpet-shaped, 
fully 2 mm. long, glabrous or slightly villous near the base, yellowish, tinged with reddish- 
purple. J 
TYPE LOCALITY: Smoky River, Alberta. 
DISTRIBUTION: Known only from the type locality. 
InLustTRaTIoNn: Can. Alp. Jour. Special Number 1912: pl. 5. 
44. Artemisia Parryi A. Gray, Proc. Am. Acad. 7: 361. 1868. 
Arlemisia saxicola Parryi A. Nelson; Coult. & Nels. Man. 568. 1909. 
A perennial, with a cespitose rootstock or caudex; stems glabrous, 2-3 dm. high; leaves 
obovate in outline, bi- or tri-pinnatifid into linear divisions, glabrous, 4-10 cm. long; heads 
many, nodding, in a racemiform or paniculate inflorescence; involucre depressed-hemispheric, 
3 mm. high, 5-6 mm. broad; bracts 15-18, in 3 series, the outer somewhat shorter, oblong or 
elliptic, glabrous, obtuse with brown scarious margins; ray-flowers few; corollas 1.5 mm. long, 
glandular-granuliferous; disk-flowers about 30; corollas deeply campanulate, glandular- 
granuliferous, 2 mm. long; achenes nearly 2 mm. long. 
TypPE Locality: Huerfano Mountains, ‘‘New Mexico” [Colorado!]. 
DIstTRIBUTION: Mountains of Colorado (and eastern Utah ?). 
