1354 CARDUACEAE 
27. Harrisii Steele. Stem 6-12 dm. i Red except in the 
florescence: lower leaf- blades ovate, 6—18 em. long, 3- wide, firm, B 
more or less doubly dai little gcns Pc "Hui above; petioles 
as long as the blades or longer: inflorescence large and loose, x branches 
widely spre gee mat er- TE at the tips: involucre 4—6 mm. hi igh, 2.54 m 
thiek; inner braets oblong-obovate: oe Pa cs exserted, inconspicuous 
in the disk: achene hairy: P appus 2.5-3.5 mm. long. [S.V yi (Fi. SE. U. S.) J— 
Dry ue Blu p idge and adj. bee ** Ga «C Ala.?? to Ky. 
and W. —gur um.— 
28. S. uniligulata Gi page Stem ee dm. tall, eid below the in- 
florescence: leaves us, strongly decreasing in size upwards; blades of 
the larger ones Duns or oblong-lanceolate, 1.5-3 ES . lon n l3 em. wide, 
shallowly serrate, firm or thiekish, glabrous: heads ery numerous to few, 
in a large to small thyrse, the lower MEA hirsute, Rire n usually 
short, Bond the upper heads closely bunched: heads 6-8 mm. high: involueral 
bracts oblong, obtuse, with a conspicuous midiib: achene 1. 5-9 mm. long, linear, 
dilated upw Ru ibbed. Ls: oe T. & G.]—Acid swamps and bogs, various 
provinces, N. C. to Wis. Newf.—Sum.-fall—A relat e ee S. uliginosa 
Nutt., was apparently fae ee recorded from N. C. in Fl. SE. U. S. 1194. 
ustrina Small. Stem 8-15 pet tall, pape weed even in the inflores- 
cence: ` leaf- a a 6-1 n . lon em. wide, glabrous, firm, ser- 
rate, tapering t margined pet which is i20 Eun than the blade: 
thyrse s elongate i ‘branches us -spreading, flower-bearing to base or 
d : heads 7 -8 mm. high: involucral bracts oblong, acutish or obtuse: 
ne 2. o mm. long, ribbed .—Swamps, sometimes brackish, Coastal Plain and 
Piedmont Ga. to Va.—Sum.-fall. 
. flavovirens Chapm. Stem 5-20 dm. tall glabrous even in the in- 
florescence: Lis Su tear oblong-ovate or r oblanceolate, 1-2 dm. long, 2-5 
ide, glabrous, firm, thickish, crenate-serrate, tapering to a margined 
ecole which vari ies from much shorter than the blade to ees as long: 
thyrse narrow, long, bei branches short, spre d flower-bearing to base or 
he 
edi S0: ads 7-9 m igh: involucral bracts narrow, acutish: achene 2-2.5 
m. long, ribbed Brackish marshes, dun de Florida. 
31. S. rigida L. Stem 5-20 dm. tall, stout, Sarai except in inflorescence: 
lower leaf-blades oblong. ovate, 1.2—2 dm m. long, 5-9 em. wide, firm but not thick, 
closely crenate-serrate, very rough above es minute retrorse hispid hairs, 
smooth and glabrous be neath: inflorescence elongate and loose, the bra nches 
RT -spreading or iic gcn erect, the heads often crowded towards the 
ends: heads 6- om be ca volucre broa adly campan nu Da oblong, 
obtuse: achene long, 10-ribbed, sparsely pubes ent. [S. patula 
£, 
. Muhl. |] —Swampy “woodland and thickets, various provinces, Ga. to Mo., Ont., 
and Me.—Sum.—fal 
32. S. salicina Ell Stem 6-15 dm. tall, y stout, glabrous, except in the 
d 
inflorescence: Nu leaf-l blades oblong-ovate to oblong- es s e, -2 dm 
long, 1.5-3 cm. wide, thin e stiff, bendi: -serrate or se dull- -green and 
strongly uat seabrous above, smooth and light- e o th: inflores- 
cence elongate and narrow, “the heads in few-flowered clusters or short racemes, 
not at all ad heads mm, e voluere campanulate to narrowly 
campanulate; bracts linear-oblong, a Em or sish: achene 2.5 mm. long, 
2. 
obscurely ribbed, sparsely a ids grounds, Coastal Plain and adj. 
provinces, Fla. to La. and N. C.—Sum.-fall. 
S. mexicana L. dm. tall stout, glabrous below the in- 
florescence: lower leaf blades blong. lanceolate to linear-lanceolate, 1-2.2 dm. 
