Pa 
CARDUACEAE 1403 
Pappus-bristles distinct, falling away separately : achene glabrous. I. ORTUSIFOLIA. 
Pappus-bristles united at the base, falling away together: achene 
pubescent. II. PURPUREA. 
I. OBTUSIFOLIA 
Leaf-blades merely sessile. 
Foliage pubescent, not viscid. 
1. G. FER aida 
Foliage fiandular -viscid. 2. G. Hel 
Leaf-blades decurrent on the stem. 3. G. rem 
II. PURPUREA 
Leaf-blades manifestly more pubescent beneath than above, 
spatulate, sometimes broadly so. 
Leaf-blades thin: stem cobwebby: involucre-elusters co- 
piously woolly 4. G. spathulatum. 
Leaf-blades thick : -stem E une woolly or felty: involucre- 
clusters sparingly woolly. 5. G. purpureum. 
ces almost SML Md pubescent on 213 sides, linear- 
atulate below, linear or mostly so abov 6. G. falcatum. 
G. obtusifolium L. Plant 2-6 dm. tall: eauline leaves 2-10 em. long; 
eoa elliptic-linear to UR En DUREE nenne glabrous or glabrate: heads 
W | | NANA 
oe 
R 
ay 
ez | tal 
een 
2 : : = 
high ; outer bracts acute. [G. decurrens Ives, not tL. ] Dry soil, oo of Due 
and clearings, Blue Eee and more N provinces, Tenn. to Tex., Ariz., B. C., 
S., and Pa.—Sum.-fal 
corym M od -panieulate nvolue 
high; ner bracts | ave 5 e. 
pu Miehx.] — ABBIT-TOBACCO.)— 
ds, Ids, and thickets, various D 
inces, Fla. to Te x; Man., and N. S. 
fall. 
2. G. Helleri Britton. Plant 2-9 ote tall: 
i a s Ku unda 3-11 em. long: 
5-6 hi outer eee ob- 
a. S no weeds sere provinces, Ga. 
to Miss. | Ky, and N. J. popu fall. 
4, spathulatum ra Plant thinly gray-pubescent, 2-4 dm. tall: leaf- 
blades spatulate, 2-8 em. long: outer bracts of the involucre broadly linear.— 
te-places, cult. gr outs roadsides, and pastures, Coastal Plain and Pied- 
Hen Fla. to Tex— (W. I. )—Spr. —fal 
G. purpureum L. Plant white-woolly or silvery, 1-4 dm. tall: leaf-blades 
spatulate to linear, 2-8 cm. long: heads in sessile axillary clusters, these in 
virgate o outer bracts of the Pe elliptie.—W oods, cult. grounds, 
d pp d. various s provinces, Fla. to Tex., Kans., and Me.—(W. I., 
Uo “e: á., S. A.)—Spr 
G. falcatum Lam. Plant more slender than in G. purpureum, Ri 
m -woolly, 1—4 dm. tall: leaf-blades usd Mi to linear, 2-6 c 
r bracts of the involuere elliptic- —Pinelands and cult. AERA 
Coastal Plain and adj. provinees, Fla. D "Te ex. and Tenn.—(S. 4.)—4A1l year. 
G. uliginosum L. related to the species of group I in its distinct pappus. 
bristles; differing from them in its low diffuse UM and the a © 
capitate inflorescence, has been reported from Ten 
FACELIS Cass. Annual, small, pubescent herbs. Leaves alternate: 
arene narrow, entire. Heads borne in the axils or in terminal clusters. In- 
