CARDUACEAE 1363 
m about 4—5 mm. broad at maturity: corolla-tube very short. 1. B. diffusa. 
isk 7—12 um prose at maturity: corolla-tube nearly as long 
as the thro 2. B. asteroides. 
B. diffusa Ell. Plant pn m. tall: blades of the upper leaves linear to linear- 
subulate , 4.9-8 em. long: outer D "e the involucre subulate, about 1.5 mm. 
long, the inner linear, ds ut twic ong: 
pur 5-7 m ong, white disk ac rene 
about mm. wide: corolla 1-1 m. long, 
the throat 2—3 times longer than the tub 
(DoLL’s-DAIsy.) — Low 
grounds, Coastal ] Plain and adj. provinces, 
Fla. to Tex., Ill, and S. C.—(Mez.)—Fall. 
. B. asteroides (L.) L'Her. Plant 1-2 m. 
tall: blades pa the upper leaves oblong to 
Sd 3-12 long: outer braets of the 
voluere ne lanceolate, 2-3 mm. long, the 
inner a ped bap is ligules linear, pos Or 
ong: disk 7— 
ale 
corolla about E mm. long, the TER Kad 
as long as the tube: achene about 2 mm. long.—Stream-banks, and sandy or 
gravelly shores, various provinces, Fla. to La., Minn., and Co nn.—Sum.-f ll. 
37. SERICOCARPUS Nees. Perennial low, aster-like herbs. Leaves 
alternate: blades entire or toothed. Heads in eorymbs. Involucre campanu- 
late to cylindric, several-flowered: bracts broad, or the inner ones sometimes 
rather narrow. Ray-flowers several: corollas with a long tube and a narrow, 
white or pink ligule. Disk-corollas with a narrowly funnelform throat and a 
long tube: lobes lane es Anthers slightly longer than the filaments or 
shorter: appendages lanceolate. Achene flattened, 1-nerved. Pappus o 
numerous seabrous ROM dod speeies as follows.—W HITE-TOPPED ASTERS. 
RAGGED-ASTERS. 
Leaf-blades entir 
Foliage glabr aie or nearly so. 1. S. linifolius. 
Fo poo o pr pubescent. 
Bra of the involucre obtuse, firm : peduncles rigid, 
"Stout. 2. S. bifoliatus. 
acts of the involucre acute, lax: peduncles weak, 
lender. 3. S. acutisquamosus. 
Leaf-blades toothed. . S. asteroides. 
l. S. Munere (L.) B.S.P. idR diede or nearly so, 2-7 dm. tall: blades 
of the upper leaves linear, 2-6 e ong: d ere 4—6 mm AM inner bracts 
alae bios at the green "tips: disk- corolla 
ong: ligu ules 5— mm. Ma depre 
wh whitish, [S. solidagin Nees.] — Acid, 
sandy thickets and dry oe) various pro- 
vinees, Ga. to La., Ohio, and Me.—Sum.—fall. 
2. S. bifoliatus (Walt.) Porter. Stem 3-7 
dm. tall: blades = the upper ake spatu- 
te to ME. ate, 1-3 ce voluere 
out 6 mm. hi igh; inner bracts iu -ellip- 
um disk- Mes. over 6.5 mm. long: 
Nees.] 
rarely adj. provinces, Fla. to La. and Va.— 
Sum.—fall or all year southward. 
