Part 3, 1916] CARDUACEAE: ANTHEMIDEAE 251 
Plant 1-3 dm. high; branches decumbent or spreading 
at the base. 110. 
Plant about 5 dm. high, with erect strict branches. 111 
Outer bracts broadly ovate, less than half as long as the inner- 
most. 112. A. Vaseyana. 
Involucre 24 mm. high, 2—2.5 ay broad; heads 1—8-flowered. 
Leaves, at least some of them, 3-toothed at the apex. 
Shrubs 5—50 dm. high; heads numerous in ample panicles. 
. arbuscula. 
. spiciformis. 
pe 
Leaves cuneate. 113. A. tridentata. 
Leaves narrowly linear-cuneate or linear. 114. A. angusta. 
Shrubs 1-4 dm. high; heads fewer. 
Heads glomerate in dense panicles; involucre turbinate. 106. A. Bigelovit. 
Heads in simple, raceme-like panicles; involucre campanu- 
late. 
Heads 7—9-flowered; savoliece densely canescent. A. arbuscula. 
110. 
Heads 1—6-flowered; involucre nearly glabrous. 115. A. nova. 
Leaves 3-cleft into linear-filiform divisions. 116. A. tripartita. 
Branches of the inflorescence nodding at the ends; achenes sparingly : 
arachnoid-pubescent. 117. A. Parishit. 
XIX. RIcmaEe 
One species. 118. A. rigida. 
XX. PYGMAEAE 
One species. 119. A. pygmaea. 
Subgenus A. DRACUNCULUS 
Heads heterogamous. Marginal flowers pistillate; corollas subcylindric, usually 2-3- 
toothed, somewhat tapering upwards. Disk-flowers hermaphrodite but sterile; corollas funnel- 
form or campanulate. Receptacle glabrous. 
I. Dracunculoides. Style of the disk-flowers undivided, ending in a cup-shaped peni- 
cillate appendix, that of the ray-flowers exserted, cleft about one third its length into linear 
ascending branches. Corollas of the ray-flowers 2—3-toothed, somewhat curved, and cleft on 
one side, usually glandular-granuliferous; those of the disk-flowers cylindro-campanulate or 
somewhat funnelform, glabrous or sometimes hairy. Annual or perennial herbs, glabrous or 
appressed silky-pubescent, not tomentose. 
Artemisia glauca Pall.; Willd. Sp. Pl. 3: 1831. 1804. 
Artemisia Dracunculus glauca Besser; Hook. Fl. Bor. Am. 1: 326. 1833. 
Artemisia glauca fastigiata Besser, Bull. Soc. Hist. Nat. Mosc. 8: 59. 1835. 
Artemisia dracunculoides brevifolia T. & G. Fl. N. Am. 2: 416. 1843. 
Artemisia dracunculoides incana T. & G. Fl. N. Am. 2: 416, in part. 1843. 
A tall perennial, with a thick root and short rootstock; stem 3-6 dm. high, striate, silky- 
pilose when young, with ascending branches; lower leaves 3-cleft above, the rest entire, linear, 
2-4 cm. long, 1-3 mm. wide, often fascicled, silky-canescent, turning brown; heads very numer- 
ous in leafy panicles, heterogamous; involucre hemispheric, 2 mm. high and 2—2.5 mm. broad; 
bracts 10-15, in 2-3 series, sparingly pubescent, the outer lanceolate, about two thirds as long 
as the inner, acute, with narrow margins, the inner oval, rounded at the apex, broadly scarious- 
margined; ray-flowers 10-15; corollas nearly 1 mm. long, curved, glandular-puberulent; 
achenes 0.5 mm. long; disk-flowers 8-13; corollas campanulate, 1.5 mm. high; style 0.6 mm. 
long, somewhat clavate. 
TYPE LOCALITY: Siberia. 
Disrrrpurion: Manitoba to Alberta, Nebraska, and Wisconsin; Santa Barbara, California; 
also in Siberia 
- ILLUSTRATION: Britt. & Brown, Ill. Fl. f. 4002; ed. 2. f. 4575. 
2. Artemisia Dracunculus L. Sp. Pl. 849. 1753. 
Artemisia inodora Willd. Enum. 864. 1809. Not A. inodora Mill. 1768. 
Oligosporus condimentarius Cass. Dict. Sci. Nat. 36: 26. 1825. ' 
A perennial, with strong rhizome; stem 5-10 dm. high, glabrous, grooved, reddish-brown 
below; leaves sessile, entire, spreading or at last reflexed, 3-8 cm. long, 4-12 mm. wide; heads 
numerous in leafy panicles, heterogamous; peduncles 1-2 mm. long; involucre hemispheric, 
glabrous, about 2.5 mm. high, 3-4 mm. broad; bracts 10-12 in 3 series, the outermost oblong, 
lanceolate, obtuse, green or brown, half as long as the inner ones, the middle ones elliptic, the 
