CARDUACEAE 
Disk-flowers with yellow corollas. 
Leaf-segments entire, elliptic-ianceolate or lanceolate. 
Leaf-segments 1—2-pin nately parted, very narrowly 
linear or filifor 
Disk-flowers with p le-brown coro 
Do of ihe "Teaf- blades comparatively few, 2-4 
. broad : internodes longer than the leaves. 
Divisions of the leaf-blades ar numerous, appearing 
dense fascicles, 1-2 broad: internodes 
mostly shorter than the tenes 
III. LATIFOLIAE 
Plant with ovate or ovate-lanceolate leaf-blades 
IV. INCTORIAE 
Ligules of the ray yellow with crimson-brown base: flowers 
of the disk with dark-red corollas. 
Outer involucral bracts much shorter than the inner: 
achene linear-elliptic, thin, flat 
Outer involucral bracts Du about as long as the 
idner: achene obovate, thick, convex 
ka sc of the ray pink: flowers of the disk with yellow 
rollas. 
V. ANGUSTIFOLIAE 
.Achenes with entire scarious margi ns. 
ene un or Some ot them, lobed: internodes 
Leaf-blades simple and entire: internodes mostly 
much longer than the leaves. 
Achenes with fimbriate or dissected winged margins 
is Rs ud larger leaves of an elliptic, lanceolate, or 
ype. 
eee DASS little longer than the internodes 
Lower leaves much longer than the internodes: 
lades of the basal leaves linear, lanceolate, or 
linear- o Bosco pointe 
Leaf-blades simple and entire: ‘achene obovate 
Leaf-blades often lobed: achenes elliptic, about 
. long, the wing as wide as the body. 
Blades of t the basal leaves elliptic or ODL ceo dta 
obtu 
DINE o. the larger leaves of an ovate or ovate-lanceolate 
e opposite; petioles and blades (when young) 
ciliate-margined. 
Leaves alternate; margins naked, 
I. NUDATAE 
Plant with long-tapering leaves and pink- pony ligules. 
Q 
a 
1447 
. C. major. 
. C. verticillata. 
. C. delphinifolia. 
. C. pulchra. 
. C. latifolia. 
. C. tinctoria. 
. Drummondii. 
. C. rosea. 
. C. cardaminefolia. 
. C. stenophylla. 
. C. Leavenworthii. 
. C. Lewtonii. 
. C. angustifolia. 
. C. longifolia. 
falcata. 
24. C. gladiata. 
27. 
. C. integrifol 
. ©. heligninoides. 
C. nudata. 
1. C.lanceolata L. Plant 2-6 dm. tall: blades of the lower leaves spatulate 
to linear- ne a rarely with = or 2 lateral lobes (in C. lanceolata 
e oy leaves with narrow blades 
I h 
: m 
rens, woods, and stony fields, various pro- 
vinces, Fla. to La. and Ont.—Spr.-sum. 
C. crassifolia Ait. Plant 2-4 d 
to elliptie, entire, usually pubescent 
: : 0 t 
r, 2.0-3 mm. 
ng.—Dry soil, woods, and old fields, Coastal 
lo 
Plain and adj. pr ae neces, Ga. to La 
and N. C.—Spr.- 
