1472 CARDUACEAE 
IV. VULGARES 
pd. en parens lobed leaf-blades: heads in simple or com- 
ound s 6. A. vulgaris. 
V. PONTICAE 
Perennial with narrow lobed leaf-blades: heads in simple or 
compound racemes. 7. A. Abrotanum. 
1. A. caudata Michx. Stem, glabrous, d least at maturity, 5-18 dm. tall, 
often with ascending branches at the bi : leaves numerous; blades uc to 
thrice p divided, the d line 
filiform to nearly - fili for eads ae 
u n i j 
ducing fru mm. high; bracts ovate to 
oval or hun du ray-flowers pud 
corollas 1.5 mm. long: achene about 1 m 
long.—Sandy soil, various provinces, Fla. 
to Tex., Wyo., and N. B.—Sum.-fall. 
2. A. campestris L. Stem, glabrous, 3—6 
dm. tall, usually geen’ 2 leave es 
clustered 2 aA bas e of t ; blades 
ostly o or twice Qo. diviled, the 
segments pes -filiform: heads numerous, 
open panicles: involucre with the disk- 
ee. perfect, but not Producing br 2-2.5 mm. high; ge ovate to 
oval: ray-flowers 6-10: corollas 1 . long: Mes fully 0.5 mm. long.— 
a woods and dry banks, various AN S. C. to Conn. Nat. of Eu. —Sum.— 
A. Abs 1n L. Stem, or less woody, 4-12 dm. tall, finely 
cinere ous-pubescent, mu euch d leaf-blades once, twice, or thrice pin- 
nately div ided, pos segments linear, pt or ovate: heads numerous in 
leafy panicles, nodding: involucr e 3- 3.5 mm. high, w vith the central flowers 
dics iid ing; braets lanceolate E ovate: por cd out 10: corollas 1.5 
ong: achene fully 1 mm —(WORMWOOD.)— — Fields, M ME and 
banke, rie provin ces, N. C. E^ P Utah, B. C. Ont., and 'Newf. Nat. of 
Eu.—Sum.-fal 
4. A. biennis Willd. Plant glabrous, inodorous, insipid, 2-11 dm. tall, the 
stem nearly simple or sparingly branched: leaves numerous; blades once or 
twice erred divide d, the segments lanceolate or linear, incised-pinnatifid 
or pinnatifid: paniele ‘branches pa d in qu heads not drooping, erowded 
e 2- wit 
in En cem involue high, h the central flowers perfect 
and fruit-produeing; ip ‘elliptic do elliptic-laneeolate: ray-flowers 10-15; 
disk- flowers 10-15; corollas yellow, mes Eie . long: achene about 1 mm. 
long. ne y banks and rocky soil, arog, vinees N a Coastal Plain, 
Tenn. to Mo., B. C., N. S., and Pa.; ae ada eastward.— (0. W.)—Sum.-fall. 
5. A. annua L. Plant, glabrous, id d 4—10 dm. tall, the stem much- 
Pd. leaf-blades once, twice e pinnately divided, the segments 
elliptic or incised, or pinnatifid: b Dance endi n n loose racemes: 
a a a hun erg nodding: involucre about 1. 5 mm. hi igh, ith 
pe B; 
less than 1m ues disk- flowers or 6; corollas a l mm. long: achene 
l mm. lon z Fields, roadsides, a aste- i various provinces, Tenn. to 
O. W.—Sum 
Ark., Ont., N. B., and Va.; also Calif. Nat. 
