COMPOSITAE. Vou, III. 
15. Artemisia kansana Britton. Kansas Mug- 
wort. Fig. 4585. 
ate aida A, Wood, Trans. Kans. Acad. Sci. 5: 51. 
1876, 
A, kansana Britton, in Britt. & Brown, Ill. Fl. 3: 466. 1898. 
Densely white-woolly all over; stem erect, much 
branched, the branches strict, bearing very numerous 
small heads forming a narrow dense panicle. Leaves 
numerous, crowded, the lower pinnately divided into 
3-7 narrowly linear revolute-margined segments 4” 
wide or less, greenish above; upper leaves mostly nar- 
rowly linear and entire; heads oblong-oval, sessile, or 
very short-peduncled, erect, or somewhat spreading, 
14” long; involucre very woolly, its bracts ovate-lan- 
ceolate to oblong-lanceolate, acute; receptacle naked. 
Plains, Kansas, to Colorado and New Mexico. Intro- 
duced in Missouri. July-Sent. 
16. Artemisia serrata Nutt. Saw-leaf 
Mugwort. Fig. 4586. 
Artemisia serra'a Nutt. Gen. 2: 142, 1818. 
Perennial; stem stout, tomentose or be- 
coming glabrous, much branched, 5°-10° high. 
Leaves lanceolate, 2’-6' long, 3-12’ wide, 
densely white-tomentose beneath, dark green 
and glabrous above, acuminate at the apex, 
narrowed to a sessile base, or the lowest peti- 
oled, sharply serrate or incised, or the upper 
entire; heads very numerous, greenish, erect, 
about 14” broad, sessile or short-peduncled 
in panicled spikes or racemes; involucre ca- 
nescent, its bracts oblong, or the outer ones 
lanceolate; receptacle naked; central flowers 
fertile. 
Prairies, Tllinois to Minnesota and Dakota. 
Introduced on the Mohawk River, near Sche- 
nectady, N. Y. Aug.—Oct. 
17. Artemisia longifolia Nutt. Long- 
leaved Mugwort. Fig. 4587. 
Artemisia longifolia Nutt. Gen. 2: 142. 1818. 
Perennial; stem densely white-tomentose, 
branched, 2°-5° high. Leaves linear or linear- 
lanceolate, elongated, entire, 2-5’ long, 1-5” 
wide, acuminate, tapering to a sessile base, or 
the lower petioled, densely white-tomentose 
on both sides, or becoming green and glabrate 
above; heads numerous, erect, spicate-panicu- 
late, about 2” broad; involucre tomentose, its 
bracts narrowly oblong; receptacle naked; 
central flowers fertile. 
In dry rocky soil, western Nebraska to Minne- 
ie Idaho, Oregon and Saskatchewan. Aug.- 
ept. 
