ParRT 3, 1916] CARDUACEAE: ANTHEMIDEAE 285 
119. Artemisia pygmaea A. Gray, Proc. Am. Acad. 21: 413. 1886. 
A low undershrub, with a thick cespitose woody caudex; stems about 1 dm. high, glabrous; 
leaves less than 1 cm. long, glabrous, or slightly canescent, pinnately dissected into 3-7 short 
linear-spatulate rigid divisions, with strong midribs; heads few in a spike-like inflorescence; 
involucre turbinate, 4 mm. high, 3 mm. broad; bracts 12-15, in 3 or 4 series; the outer ovate 
or lanceolate, acute, somewhat keeled, herbaceous, slightly puberulent; inner bracts linear, 
oblong, obtuse, yellowish, thin; flowers 3-4; corollas elongate-funnelform, 3 mm. long, glandu- 
lar-granuliferous; style included; achenes glabrous, 1 mm. long or more. 
TYPE Locality: Fish Creek, near Eureka, Nevada. 
DISTRIBUTION: Nevada and Utah. 
120. Artemisia domingensis Urban, Symb. Ant. 7: 430. 1912. 
An annual; stem erect, 2-3.5 dm. high, branched at the base, villosulous when young; 
lower and middle leaves ovate in outline, up to 3 cm. long and 2.5 cm. wide, bipinnatifid into 
lanceolate or linear ultimate segments 5 mm. long, whitish with appressed pubescence beneath, 
green above; upper leaves pinnatifid or the uppermost 3-cleft or simple; inflorescence terminal 
and axillary, with spicate-racemose branches which bear about 8 nodding heads; involucre 2-2.5 
mm. high; bracts about 10, in two series, the inner oval or oblong, obtuse, the outer smaller; 
flowers about 15;achenes 1mm.long. (Nospecimens have been seen, and position in the genus 
is uncertain, as the long description gives no indication whether the plant belongs to the sub- 
genus Dracunculus or to Abrotanum.) 
TyPE Locality: Near Constanza, Santo Domingo. 
DISTRIBUTION: Santo Domingo. 
DOUBTFUL SPECIES 
ARTEMISIA AMORPHA Raf. Fl. Ludov. 69 (1817) is insufficiently described for identification. 
18. ARTEMISIASTRUM Rydberg, gen. nov. 
Herbaceous perennials, more or less grayish-puberulent. Leaves alternate, pinnatifid 
into linear divisions. Heads discoid, small, numerous in open panicles, nodding. Involucre 
turbinate; bracts in 2 series, scarious-membranous. Receptacle convex, with most of the 
flowers subtended by scarious paleae. Flowers all alike hermaphrodite and fertile. Corollas 
funnelform; anthers oblong, subulate-tipped; styles included, shortly 2-lobed, the lobes truncate 
and erose at the apex. Achenes truncate at the apex, striate and bordered by a small crown. 
Type species, Artemisia Palmeri A. Gray. 
1. Artemisiastrum Palmeri (A. Gray) Rydberg. 
Artemisia Palmeri A. Gray, Proc. Am. Acad. 11: 79. 1876. 
A herbaceous perennial; stem 5 dm. high or more, striate, reddish, grayish-puberulent; 
leaves 5-7 cm. long, pinnatifid into 3-5 linear divisions, with revolute margins, finely tomentose 
beneath, green but minutely puberulent above; heads numerous, conglomerate, in open pani- 
cles; involucre turbinate, 3 mm. high and 4 mm. broad; bracts 10-12, in about 2 series, spar- 
ingly arachnoid-pubescent, the outer slightly shorter, all broadly ovate, acutish, scarious-mem- 
branous; paleae of the receptacle resembling the bracts, the inner smaller and narrower; 
flowers about 20; achenes 1.5 mm. long, glandular-granuliferous. 
Tyre Locatity: Jamuel Valley, 20 miles below San Diego, California. 
Distrieution: Southern California and northern Lower California. 
