CARDUACEAE 1473 
6. A. vulgaris L. Herbaceous, lanate-tomentose, 3-12 dm. tall, the stems 
i m T "branched: leaf-bla des various, white-w woolly beneath, twice pin- 
ments 1 
nodding, soon erect, in a leafy panicle: involucre 4- high, with the 
central En fruit-producing; bracts ovate to elliptic or r elliptic- Janceolate: 
ray-flowers 6-12; corollas 2 mm. long: LU s 5- eae corollas 2.5 
long: Mc L 5m m. long or more.— “(tua Wn ee) c Bets 
stream- penna) eult. grounds, and waste- places, pim Y provinces Ga. to Ala. 
B. C., Ont., and Newf. Nat. of Eu—(W. I.)—Sum 
7. A. Abrotanum L. Shrub 1 m. tall or ec puberulent or glabrous, the 
stem mueh-branehed, the branches erect or ascending: leaf tops dips pin- 
nately m the segments linear- A E heads numero nod- 
ta n leafy panicles: involucre abou igh; bracts linear lanceolate 
to e elliptic, arachnoid-canescent: ray- lowers poem 10; eorollas 1.5 mm. long: 
disk-flowers 15-20; ss nearly 2 mm. long: achene about 1 mm. oni. 
(BOLT DD p) 2 Was te-places and dudes various provinees, N. C. to 
Colo. and N. B. Nat. of "Eu .— Sum.-fall. 
114. SOLIVA R. & P. Annual, caulescent, diminutive herbs. Leav 
alternate: blades dece twice igh the ultimate segments deeply bed 
. Heads sessile on the the 
nches, green, discoid, "m dioere ws 
SEI and apetalous, the few perfect 
ones with 2-6-lobed corollas.  Involuere 
hemispheric: bracts. broad in 2 series. 
Anthers broad, mostly rounded at the base. 
ne 
often broadly pandurate, smooth, usually 
prolonged into a short spine on either side 
of the larger terminal spine. Pappus none. 
—About 3 species, South American. | 
1. S. sessilis R. & P. Plant depressed, t 
stem and branches, at least, villous: leav s 2- 9 em. long, the lobes acute or 
acuminate, ciliate: 'involuere sessile in the somewhat dilated leaf-bases; bracts 
ovate, about 4 mm. long, acute or sharp ac achene-body about 2 mm 
long, the broad wings ciliolate, eal spine bout as lon ng a the achene- 
body.—Lawns and banks, N Fla. o La. Nat. of S. Am.—Spr.-f 
GYMNOSTYLES A. Juss. Annual, caulescent, diminutive, often 
once or twice pin- 
matted Siolun ferons herbs. Leaves alternate lades 
nately divided, the ultimate segments entire or toothed Heads sessile at one 
ase of the plant, green, discoid, flowers as in Soliva. Involucre hem 
spheric, becoming flattish: bracts narrow, i o series ers narrow, 
n 
Ja sagittate at the uem Achene somewhat flattened, with callous cor- 
rugated margins and a terminal spine. Pappus none.—About 3 species, South 
American. 
Leaf-blades 2-pinnate: achene-callous corrugated up to the base of the rounded top: 
heads much depressed, 8-10 mm. wide. . Ga anthemifolia. 
Leaf-blades 1-pinnate : quien calloue corrugated D d vag trun- 
ate or notched top: heads subglobose, 3—6 mm 2. G. nasturtiifolia. 
93 
