Part 3, 1916] CARDUACEAE: ANTHEMIDEAE 267 
51. Artemisia Leibergii Rydberg, sp. nov. 
A suffrutescent perennial, 3-6 dm. high, with a woody caudex and short perennial stems; 
branches erect, simple, sparingly tomentulose or glabrate, striate; leaves sessile, 3-6 cm. 
long, oblanceolate, coarsely toothed or lobed towards the apex, or the upper entire, glabrous 
and yellowish-green above, finely floccose beneath; heads many in a dense spike-like panicle, 
mostly erect; involucre hemispheric, about 4 mm. high, 4-5 mm. broad; bracts 10-12, yellow- 
ish, only sparingly floccose, in about 3 series, the outer ovate, acute, about half as long as the 
innermost; inner bracts oval, acutish, broadly scarious-margined; ray-flowers 5-7; corollas 
1.5 mm. long; disk-flowers 20-25; corollas yellow, 2 mm. long; achenes fully 1 mm. long. 
Type collected at Fish Hook Ferry, Washington, September 18, 1894, Leiberg 935 (herb. N. Y. 
Bot. Gard.). 
DISTRIBUTION: Washington and Northern Idaho. 
52. Artemisia Tilesii Ledeb. Mém. Acad. St.-Pétersb. 5: 568. 1805. 
Artemisia Tilesii arctica Besser; Hook. Fl. Bor. Am. 1: 324. 1831. 
Artemisia Tilesii unalaschkensis Besser, Linnaea 15: 106. 1841. 
Artemisia vulgaris Tilesit Ledeb. Fl. Ross. 2: 586. 1846. 
A stout perennial, with a rootstock; stem 2-4 dm. high, floccose when young, striate, 
often purplish; leaves sessile, ovate in outline, 5-10 cm. long, acuminate, pinnatifid, sparingly 
floccose when young but soon glabrate above, white-tomentose beneath; divisions 3-5, linear- 
lanceolate, acuminate, or in var. arctica obtuse, often again cleft or toothed; heads nodding, 
sessile, in a dense short spike-like panicle, sometimes spicate; involucre hemispheric, about 
4 mm. high, 6-8 mm. broad; bracts 10-12, in 3 series, fuscous, with brown scarious margins, 
nearly glabrous, the outer ovate, acute, only slightly shorter than the inner; inner bracts 
oval, acute; ray-flowers 10-12; corollas 2.5 mm. long; disk-flowers 25-40; corollas purplish- 
brown, rarely yellowish, funnelform, 2.5 mm. long; achenes fully 1.5 mm. long. 
TYPE LocaLiry: Kamchatka. 
DistriBuTion: Alaska to Hudson Bay; also in eastern Siberia. 
53. Artemisia elatior (T. & G.) Rydb. Mem. N. Y. Bot. Gard. 
1: 430. 1900. 
Artemisia vulgaris americana Besser, Linnaea 15: 105, in part. 1841. 
Artemisia Tilesii elatior T. & G. Fl. N. Am. 2: 422. 1843. 
A tall perennial, with a rootstock; stem 3-6 dm. high, soon glabrous, striate, often purple- 
tinged; leaves many, lanceolate, acuminate, 5-10 cm. long, glabrous above, densely white- 
tomentose beneath, 3—5-cleft into narrowly lanceolate divisions or the upper entire; heads 
many in a loose panicle, peduncled, at first nodding, in age erect; involucre hemispheric, 4 mm. 
high, 5-7 mm. broad, glabrous or nearly so; bracts 12-15, in 3 series, the outermost ovate, 
fully half as long as the innermost; inner bracts broadly oval, obtuse, yellowish-green, with 
brown scarious margins; ray-flowers about 10; corollas 2 mm. long; disk-flowers 25-50; corollas 
3 mm. long; achenes 1.5 mm. long. 
TYPE LocaLity: Subarctic America. 
DIstRIBuTION: Hudson Bay to Mackenzie, Alaska, Washington, and Montana, 
54. Artemisia Gormanii Rydberg, sp. nov. 
A perennial, with a rootstock; stem 3-5 dm. high, sparingly tomentose, soon glabrate, 
green or purplish; leaves lanceolate in outline, green and glabrate above, white-tomentose 
beneath, 5-10 em. long, caudate-acuminate, divided to near the midrib into narrow, linear- 
lanceolate divisions, which are usually again divided into 2-4 narrow lobes; inflorescence loose, 
paniculate; involucre subglobose, about 5 mm. broad and high; bracts 10-12, broadly oval, 
sparingly villous, green, with brown scarious margins; ray-flowers about 10; corollas 2.5 mm. 
long, glandular-granuliferous; disk-flowers about 10; corollas funnelform, 3 mm. long, glabrous; 
achenes 1.5 mm. long. 
Type collected in the Lake Iiamna Region, Alaska, September 1, 1902, Gorman 281 (U.S. 
Nat. Herb. no. 420345). 
Distrriution: Alaska, 
