276 NORTH AMERICAN FLORA [ VoLuME 34 
87. Artemisia albula Wooton, Contr. U. S. Nat. Herb. 16: 193. 
1913. 
ADEM SG microcephala Wooton, Bull. Torrey Club 25: 455. 1898. Not A. microcephala Hildebr. 
A perennial, with a cespitose rootstock; stem 3-7 dm. high, branching, white-floccose; 
leaves white-tomentose on both sides, 1-5 cm. long, sessile; lower leaves ovate or obovate in 
outline, usually with 3-5 lanceolate lobes, the upper ones linear to oblong-lanceolate, entire 
or toothed, acute at both ends; heads many in few-headed leafy racemes either paniculate 
or simple at the ends of the branches; involucre densely tomentose, campanulate, about 3 mm. 
high and 2 mm. broad; bracts about 10, in 3 series, the outer ones ovate, half as long as the 
innermost; inner bracts oval, obtuse; ray-flowers about 8; corollas 2-toothed, nearly 1.5 mm. 
long; disk-flowers 10-12; corollas 2 mm. long; achenes 1 mm. long. 
TYPE LOCALITY: Organ Mountains, New Mexico. 
DIstRIBUTION: Texas to Colorado, southern California, Sonora, and Chihuahua. 
88. Artemisia floccosa Rydb. Bull. Torrey Club 24: 297. 1897. 
Artemisia paucicephala A. Nelson, Bull. Torrey Club 27: 35. 1900. 
Artemisia gracilenta A. Nelson, Bull. Torrey Club 27: 35. 1900. 
A perennial, with a rootstock; stem floccose, striate, 4-8 dm. high, strict; leaves numerous, 
pinnately divided into linear or linear-oblong, sometimes toothed or lobed, divergent divisions, 
loosely white-tomentose on both sides, 4-7 cm. long; heads many in a narrow leafy panicle, 
erect; peduncles 1-12 mm. long; involucre hemispheric, 4-5 mm. high, 5—7 mm. broad, tomen- 
tose; bracts about 12, in 3 series, the outer lance-ovate, more than half as long as the innermost; 
inner bracts elliptic, obtuse; ray-flowers 6-10; corollas 1.5 mm. long; disk-flowers 20-40; - 
corollas 2.5 mm. long; achenes 1.5 mm.long. (A. gracilenta is a form with somewhat narrower 
leaf-segments; A. paucicephala is one with more entire leaves and fewer heads.) 
TYPE LocaLity: Lima, Montana. 
DistRIBUTION: Southern Montana and northern Wyoming to Oregon. 
89. Artemisia candicans Rydb. Bull. Torrey Club 24: 296. 1897. 
A stout perennial, with a rootstock; stem 5-10 dm. high, floccose, striate, branched; 
leaves 5-10 cm. long, pinnatifid, with oblong or lanceolate, often again cleft segments, or those 
of the branches entire and lance-linear, tomentose on both sides but less densely so above; 
heads many, clustered, sessile, the clusters in interrupted spikes, forming a leafy panicle; 
involucre hemispheric, 4-5 mm. high, 5-8 mm. broad; bracts 12-14, in 3 series, tomentose, 
the outer lance-ovate, more than half as long as the innermost; inner bracts elliptic, obtuse; 
ray-flowers 6-10; corollas nearly 2 mm. long; disk-flowers 20-30; corollas 2.5 mm. long; achenes 
more than 1 mm. long. 
TYPE LOCALITY: Little Belt Mountains, Montana. 
DistRiBuTION: Montana to Oregon. 
90. Artemisia Flodmanii Rydberg, sp. nov. 
4 
A perennial, with a branched rootstock; stem slender, 3-5 dm. high, tomentose, grooved, 
simple up to the inflorescence; leaves many, 3-7 cm. long, white-tomentose on both sides, 
usually twice pinnatifid into lanceolate or linear divisions, those of the inflorescence less divided 
or simple; heads numerous in a rather dense leafy panicle; involucre hemispheric or narrower, 
about 3 mm. high, 2.5-3.5 mm. broad; bracts 10-12, in 3 series, floccose, the outer lance-ovate, 
acute, half as long as the innermost; inner bracts elliptic, obtuse; ray-flowers 8-10; corollas 
1.5 mm. long; disk-flowers 15-20; corollas 2 mm. long; achenes fully } mm. long. 
Type collected in Little Belt Mountains, Montana, 9 miles east of Barker, August 18, 1896, J. H. : 
Flodman 883 (herb. N. Y. Bot. Gard.). 
DistRIBUTION: Montana, Wyoming, and Oregon (and Utah?). 
