266 NORTH AMERICAN FLORA [VoLUME 34 
panicle, with racemose branches; involucre campanulate, about 4 mm. high, 3-4 mm. broad, 
more or less tomentose; bracts 8-10, in about 3 series; outermost bracts ovate, about half as 
long as the innermost; inner bracts oblong, obtuse; ray-flowers 6-12; corollas 2 mm. long; 
disk-flowers 5—15; corollas 2.5 mm. long; achenes 1.5 mm. long. 
TYPE LOCALITY: Europe. m,) 
DISTRIBUTION: Newfoundland to Manitoba, Wisconsin, Alabama, and Georgia; British Colum- 
bia; Martinique; escaped from cultivation and naturalized; native of the Old World. 
ILLUSTRATIONS: A. Dietr. Fl. Boruss. pl. 634; Fl. Dan. pl. 1176; Sv. Bot. pl. 417; Engl. Bot. 
pl. 978; Hayne, Arzn. Gew. 2: pl. 12; Reichenb. Ic. Fl. Germ. 16: pl. 1038, f. I, 1-11; F\. Deuts. 
ed. 5. pl. 3011; Britt. & Brown, Ill. Fl. f. 4010; ed. 2. f. 4583. 
48. Artemisia selengensis Turcz.; Besser, Nouv. Mém. Soc. Nat. 
Mose. 3: 50. 1834. 
Arlemisia umbrosa Verlot, Cat. Gr. Jard. Grenoble 1875: 12. 1875. Not A.umbrosa Turez. 1834. 
Artemisia Verlotorum Lamotte, Assoc. Fr. Av. Sci. Compte Rendu 5: 513. 1877. 
A stout perennial, with a rootstock; stem a meter high or more, striate, sparingly tomen- 
tose; lower leaves pinnately quinately divided to near the midrib, 1 dm. long or more, green or 
glabrate above, white-tomentose beneath; middle leaves ternately divided and the uppermost 
entire; leaves or their lobes narrowly lanceolate, acuminate, usually entire, rarely few-toothed; 
heads numerous, paniculate; involucre about 4 mm. high and 3 mm. broad, sparingly floccose, 
soon glabrate; bracts 12-15, oval, obtuse, in 3 series, yellowish-green; ray-flowers 5—7; corollas 
1.5 mm. long; disk-flowers 5-7; corollas brownish, glandular-puberulent, 2.5 mm. long, funnel- 
form; achenes 1.5 mm. long. 
TYPE Locality: On islands of Selenga River, near Selenginsk, Transbaikal Siberia. 
DISTRIBUTION: Near Portland, Oregon, probably escaped from cultivation; native of Siberia. 
49. Artemisia unalaskensis Rydberg, sp. nov. 
? Artemisia vulgaris kamtschalica Besser, Nouv. Mém. Soc. Nat. Mosc. 3:54. 1834. 
A tali perennial; stem probably 1 m. high, glabrate, angled and striate; leaves numerous, 
green and glabrous above, white-tomentose beneath, the lower stem-leaves bipinnately cleft, 
1 cm. long or more, the upper ones pinnately divided or some in the inflorescence entire; primary 
divisions mostly 5, in the lower leaves cleft into lanceolate divisions, in the upper ones entire, 
linear-lanceolate, acuminate; heads numerous in a leafy panicle, mostly nodding; involucre 
hemispheric, about 5 mm. high and fully that broad, sparingly tomentose; bracts about 15, 
light-green and scarious-margined, ovate or oval, the inner obtuse, the outer acute and 
shorter; ray-flowers about 10; corollas 2 mm. long; disk-flowers 25-50, fertile; corollas 3 mm. 
long, purplish; achenes 1.5 mm. long. 
Type collected on the Island of Unalaska, August 22, 1891, J. M. Macoun (herb. Geol. Surv. 
Canada no. 20625). 
50. Artemisia incompta Nutt. Trans. Am. Phil. Soc. II. 7: 400. 
1841. 
Artemisia discolor incompta A. Gray, Syn. Fl. N. Am. 12: 373. 1884. 
A perennial, with a cespitose rootstock; stem glabrous, green, striate, simple, 3-5 cm. long; 
leaves subsessile, obovate in outline, pinnately divided to near the midrib, green and glabrate 
or slightly floccose when young above, finely white-tomentose beneath, 4-6 cm. long; lobes 
at least of the lower leaves again cleft or toothed, with lanceolate lobes or teeth; heads usually 
many in a narrow panicle, at first nodding, erect in age; involucre hemispheric, 3 mm. high, 
3-4 mm. broad; bracts about 12, in about 3 series, glabrate or nearly so, yellowish; the outer 
ovate, half as long as the innermost; inner bracts elliptic, broadly scarious-margined, obtuse; 
ray-flowers 5-8; corollas 1.5 mm. long; disk-flowers 20-25; corollas 2 mm. long; achenes fully 
1 mm. long. 
‘ ss Locality: In the central chain of the Rocky Mountains, in Thornberg’s Pass [Wyom- 
ae DisTRIBUTION: Montana and British Columbia to Utah and Colorado. 
