CARDUACEAE 1477 
7. M. tuberosa (Nutt.) Britton. Stem 6-12 dm. tall: blades of the cauline 
leaves ovate, oval, dd -lanceolate, or narrowly elliptic, 5-20 em. long: bracts 
of the involucre 8-10 m m. long: achene 4.5-5 mm. long. is tuberosa Nutt. ]— 
Prairies, various e Ala. to La., Minn., and Ont 
= En pcr (A. Gray) Greene. Stem 7-12 dm. tall: leaf- eur ovate, 
elliptic, erenate: involueral Ds 10-12 mm. long: rolla-lobes 
I d n the throat: achene about 5 mm. long. Nic ine Ac 
E Fla.—Spr.-s 
9. M. sulcata (Fernald) Small Stem 9-15 dm. tall: leaf-blades ovate to 
d ovate narrowly elliptic, or elliptic-lanceolate: involucral bracts 8-10 
. long: corolla-lobes twice as long as the throat: achene 5.5-6 mm. long.— 
Bogs or T dE Coastal Plain, N Fla. to Ala. and Ga.—Sum.—fall. 
120. SYNOSMA Raf. Perennial, copiously leafy herbs. Leaves alter- 
lades d to hastate, toothed. En eorymbose. Involucre 
narrow. Flowers 
late lobes shorter than the funnelform 
throat. Filaments enlarged below the 
anthers. Achene ribbed, glabrous.—One 
species 
1. S. suaveolens (L.) stare Plant 6-15 
dm. e in enin ur blades hastate, 
8-2 ong, Serr dentate-serrate : 
A us E the “involuer 10-1 
‘long: corollas p nm. long: achene 
slender, 7-9 mm. long. "Tenn suaveolens 
L.]— — Rich woods, thiekets, and shaded 
banks, various provinces, Fla a. to Tenn, 
Minn., and Mass.—Sum.-fall. 
Gao 
~ Do 
Echt SS 
= - 
ON 
Q 
21. ERECHTITES Raf. Annual herbs. Leaves alternate: blades 
toothed or pinnatifid. Heads corymbose or panieulate. Involucre narrow and 
somewhat swollen at the base: braets nar- ; 
row, flat.  Disk-eorollas with triangular- 
laneeolate or deltoid lobes shorter than the 
narrow throat. Filaments longer than the 
Achene bons Pappus of many 
white bristles.—A bout 12 species, American 
and Australia 
1l. E. ue (L.) Raf. Plant 2-20 
dm. tall, watery: leaf s spatulate- 
poet ae to lanceolate, 5-20 em. long, coarsely 
oe incised, or iun did: involucre 12- 
5 long; hee TTO 2 
om = m. long, white: achene a 
1.5 mm — (FIREWEED. — RT. ) Fields woods, roadsides, and waste- 
places, various provinces, Fla. to La., Sask ve wf.—Sum. Or all year S.— 
rather tender, but also omewhat ‘coarse na varying greatly in habit and 
with vus endless leaf- -form 
