CATALOGUE. 133 
corollas obconic ; branches of the style truncate and penicillate.— Carson 
City, (Anderson, 229 !) In tlic very hirsute receptacle this plant recedes 
from the character of Seriphidium, in which section it is placed by Dr. Gray. 
The filaments are considerably dilated just below the anthers, as if the con- 
nective were produced below the anther-cells. 
Artemisia discolok, Dougl. Suifruticose ; stems 1-2° high, glabrous, 
simple below ; leaves 1-3' long, mostly smooth above, beneath paler and 
webby tomentose, pinnately lobed with lanceolate pointed entire or sparingly 
toothed segments, the edges revolutc ; heads sub-globose, 1 J-2" broad, dis- 
. posed in an elongated virgate raceme or strict panicle ; involucre at first to- 
mentose, cup-shaped ; the outer scales ovate ; inner ones oval, with hyaline 
ciliatc-fringed margins ; receptacle smooth ; florets numerous ; a few of the 
outer ones pistillate, fertile, with very slender corollas, and smooth ])ranches 
of the style ; the rest perfect, fertile, with funnel-form corollas, and trun- 
cate penicillate styles.— Subarctic America and the Saskatchewan, to Ore- 
gon, CaHfornia, and New Mexico. East and West Humboldt Mountains, 
Nevada, and in the Wahsatch near Parley's Park ; 7-9,000 feet altitude ; 
July-September. (638.) 
Artemisia Ludoviciana, Nutt. Saskatchewan to Oregon, California, 
and Arizona, and eastward as far as Illinois and Michigan, appearing under 
a great variety of forms. Common throughout Nevada and Utah, but con- 
fined to the stream-banks and valleys, at 4-6,500 feet elevation ; August- 
October. The specimens collected illustrate three principal forms, viz : — 
Var. DouGLASiANA. {A. Douglasiana, T. &; G.) White-tomcntose 
throughout; leaves long-lanceolate, acute, entire; panicle ample; heads 
rather large. (639.) 
Var. LATIFOLIA, T. & G. Tomentose-canescent ; leaves elliptical-lance- 
olate, rather short ; heads middle-sized. (640.) 
Var. LATILOBA, Nutt. Leaves mostly i)iimatifid or trifid, the lobes and 
the upper leaves broadly lanceolate ; the upper surface commonly less tom- 
entose than the lower, or even becoming smooth; heads middle-sized or 
rather large. (641.) 
Artemisia biennis, Willd. Northern British America to Oh io, and 
westward to California; now naturalized a])out Bufl^do, Philadelpliia, and 
Staten Island, N. Y. Common in the mountain canons of Nevada ; 5-6,000 
feet elevation ; Septeml)er. (642.) 
