Part 3, 1916] CARDUACEAE: ANTHEMIDEAE 281 
panicles, with more or less racemiform branches; involucre hemispheric, about 3 mm, high 
and 5 mm. broad; bracts about 15, in 3 series, tomentulose, the outermost lanceolate, her- 
baceous, acute, shorter than the inner, the rest obovate, scarious, erose, rounded at the apex; 
ray-flowers 10-15; corollas usually 4-toothed, 1 mm. long; disk-flowers 25-30; corollas funnel- 
form-campanulate, less than 1.5 mm. long; achenes 1 mm. long. 
TYPE LOCALITY: Hungary. 
DIsTRIBUTION: Cultivated and escaped, sparingly established from Maine to Pennsylvania, 
Ohio, and Manitoba; native of Europe. 
ILLUSTRATIONS: FI. Deuts. ed. 5. pl. 3007; Jacq: Fl. Austr. pl. 99; Hayne, Arzn. Gew. 2: pl. 10; 
Reichenb. Ic. Fl. Germ. 16: pl. 1041, f. III; Britt. & Brown, Ill. Fl. f. 4011; ed. 2. f. 4584. 
XVI. Rutaefoliae. Low shrubsorundershrubs. Leaves tomentose on both sides, at least 
the lower ones twice dissected, the primary divisions ternately cleft. Heads rather large, 5 mm. 
broad or more, mostly racemose, nodding; involucre hemispheric. Corollas glandular-granu- 
liferous; those of the ray-flowers short, cylindric; those of the disk-flowers funnelform, 5-toothed. 
Style of the ray-flowers short-exserted, that of the disk-flowers about equaling the corolla. 
105. Artemisia alaskana Rydberg, sp. nov. 
A low shrub, 3-5 dm. high; branches simple, sparingly tomentose; lower leaves twice 
dissected, first pinnate with 5 divisions, each ternately cleft into oblong or linear obtuse divi- 
sions, white-tomentose on both sides, the middle leaves twice ternate, the uppermost ternate, 
with linear divisions, or entire and linear; inflorescence racemiform; branches simple or with 
2 or 3 heads, elongate, 1-7 cm. long; heads nodding; involucre hemispheric, about 5 mm. 
high, 6-7 mm. broad; bracts about 15, in 3 series, the outer linear-oblong, villous-tomentose, 
the inner oval, with scarious erose margins; ray-flowers 7-10; corollas tubular, 1.5 mm. long, 
glandular-puberulent; disk-flowers about 50; corollas glandular-granuliferous below, funnel- 
form; achenes 1.5 mm. long. (Closely related to the Siberian A. Turczaninoviana Besser.) 
Type collected on the Yukon River, between Nulata and Nowikakat, in July, 1889, I. C. Russell 
(U. S. Nat. Herb. no. 417571). 
XVII. Bigelovianae. Low undershrubs of the habit of the Tridentatae, but the 1 or 2 ray- 
flowers usually present. Leaves, at least the lower, cuneate, 3-toothed at the apex, canescent. 
Heads small, 3—5-flowered; involucre turbinate. Corollas slightly glandular-granuliferous or 
glabrous; those of the ray-flowers sub-cylindric, tapering upwards, 2-toothed; those of the 
disk-flowers narrowly funnelform, 5-toothed. Style of the former short-exserted; that of the 
latter included, slightly 2-cleft with truncate erose tips. 
106. Artemisia Bigelovii A. Gray, in Torr. Pacif. R. R. Rep. 4: 110. 
1857. 
Artemisia petrophila Wooton & Standley, Contr. U. S. Nat. Herb. 16: 193. 1913. 
A low shrub 2-4 dm. high, with erect branches; leaves canescent on both sides, narrowly 
cuneate, 3-toothed at the apex, 0.5-3 cm. long, or the upper ones entire and linear; heads many, 
glomerate in dense panicles; involucre turbinate, 2-2.5 mm. high and as broad, densely tomen- 
tose; bracts 12-15, imbricate in 3 series, the outer ovate, thick, half as long as the inner; inner 
bracts oblong, obtuse; ray-flower 1, sometimes 2, or wanting; corolla 1 mm. long; disk-flowers 
2 or 3; corollas 2 mm. long; achenes 1 mm. long. 
Tyre Locatity: Rocks and canyons on the Upper Canadian, ‘Texas. 
DistrreuTion: Western Texas to (Kansas?) southern Colorado, Utah, and Arizona. 
ILLustTRaTiIons: Britt. & Brown, Ill. Fl. f. 4016; ed. 2. f. 4591. 
Subgenus D. SERIPHIDIUM 
Heads homogamous. Flowers all alike, hermaphrodite and fertile. Corollas in ours 
trumpet-shaped or with a campanulate throat and cylindric tube, sparingly glandular-granu- 
liferous or glabrous, in one species slightly villous. Styles 2-cleft; branches recurved, truncate 
and erose at the apex. Receptacle naked. All our species fruticose or suffruticose. 
