1426 CARDUACEAE 
toothed: braets of the wi addi linear to linear-lanceolate: Ne of the ray 
2-3.5 em. long: disk 13-20 mm. wide.—Woods and low gro arious prov- 
inces N » Coastal Plain, Ga. p yo Mo., and Pa.—Sum fall 
20. la truncata Small. Stem 3-8 dm. tall, glabrous or nearly so: blades of the 
lower leaves narrowly lanceolate to elliptic or rius linear, remotely and 
shallowly de ais or e dd Am s of the in ple i r to linear-lanceolate: 
ligules of the ray 1.5- long: disk 10- 15 wi vide: —Woods and low 
EIQUE) Blue Ridge to i nnm Plateau, Ga. p Ala. and Tenn.—Fall. 
21. R. missouriensis e rer Stem 4-6 dm. cane mn blades of the 
lower leaves linear-lanceola o linear, entire: bracts of the involucre linear 
to linear-elliptie: ligules of ae ray 5-2.5 E Tong: "disk 1 10-15 mm. wide.— 
Dry hills and rocky soil, La. to Mo.—Sum.—fal 
22. R. E Boynton & Beadle. Stem 4-8 dm. tall, sparingly pubescent, 
t 
shullos-detitate or entire: braets of the pes elliptic to lanceolate: ligules 
of the ray 6-12 mm. long; disk 10-18 mm. wide.—Woods and fields, Interior 
Low Plateau, Ala. and Tenn.—Sum.- fall. 
23. R. graminifolia (T. & G.) Boynton & Beadle. pi 6-8.5 dm. tall, 
pubescent: blades of the lower leaves elongate-linear, grass-like, entire, the 
midrib alone A bracts of the involucre mostly lanecolate: ligules of 
the ray 8-12 mm. long: disk hemipheric to elliptic. ovoid. [Hchinacea? atro- 
rubens graminifotia T. & G.]—Pineland ponds, Coastal Plain, N Fla. and 
Ga p 
24. R. den ii A. Gray. Stem 4-12 dm. tall, glabrous: p of the low 
leaves linear or elongate-linear, bios ribbed: iaa of the involuere linear 
to linear a ligules o of the ray 15-30 mm. long: disk ovoid-conic to 
conie-eylindrie. [R. AM pii J- Pineland ponds and moist pine- 
lands, Coastal Plain, N Fla. and Ga. 
25. R. triloba L. Stem 6-15 dm. tall, pde or hirsute: blades of the upper 
leaves ovate-lanceolate ne mea late: brae of the involucre linear to linear- 
xr ed ligules of the 15-25 mm 3 disk subglobose to conic-globose, 
5-13 mm. broad.—Moist P roeky woods, old fields, i thiekets, various 
provinces, Ga. to Tex., Kans., Mich., and N. J.—Sum —fal 
26. R. Pp d Chickering. Stem 7-15 dm. tall, sparingly pubescent: 
blades of the upper leaves ovate: bracts of the involucre lanceolate to elliptic- 
lanceolate: pus of the ray 20-35 mm. long: disk hemispheric to s -conie, 
15-20 mm [R. triloba rupestris A. Gray.] ne ae oe oan Mt. 
. broad. 
and adj. peaks, in the Blue Ridge of N. C. and Tenn.—Sum 
27. R. Beadlei Small. Stem 6-15 dm. tall, hirsute: blades of the upper 
ed lanceolate: braets of the involuere linear to linear-laneeolate: ligules of 
the ray 11-20 mm. long: m Il 10 mm. wide.—Rocky slopes, above 1,000 m., 
in the Blue Ridge of N. C.— 
28. R. acpi (T. & G.) Beadle. Stem 6-12 dm. tall, softly hirsute: 
blades of the upper leaves ovate- E i: of the involuere 1 linear to 
m lanceolate: Des ules of the 0—15 long: disk 6-9 . broad. 
[R. triloba pinnatiloba T. & G. eus pu W Fla.—Sum. “fall, 
