1498 CICHORIACEAE 
inner ones gera oris Er md Bo een -body 3—4 mm. long, 
ae t as long as the beak.— (WILD Hor EED.) —Rich soil,  fence- 
nn thickets, and his Woods, various pores Ga. to La., Colo, B. C., 
Ont., and N. S.—(W. I.) 
6. L. hirsuta per Stem 6-12 dm. tall, ee hirsute: blades of the 
stem-leaves 9-20 cm. long, sinuate- -pinnatifid, not elongate: involucres 12-15 
mm. long, the nos braets linear: ligules purplish a to white: achene- 
body about 4 mm. long, much shorter than the beak.—Dry soil, various prov- 
inces, Ala. to Tex., Ont., and Que 
7. L. graminifolia Michx. Stem 6-15 dm. tall, glabrous: blades of the s 
c. m 40 em. long, eae or with = Gavi s or deflexed lobes, i 
ongate: involueres 12-15 mm. long, t er ones linear-anceolate: 
dnd. e -blue, or n white or bee tiene -body 4—4.5 . long. 
—Fields and woods, Coastal Plain and adj. provinces, Fla. to Tex. por S. C. 
15. MULGEDIUM Cass. Herbs resembling Lactuca in habit. Achene 
thick, beakless. About 25 species, Eurasian and North American.—Sum.-fall. 
—LETTUCES. BLUE-LETTUCES. 
Pappus bright-white: blades of the stem-leaves neither auriculate nor clasping. 
Leaf-blades toothed: pees ey not narrowed into a neck. 1. M. villosum. 
Leaf-blades pinnatifid : ac e-body narrowed into a slender 
2. M. floridanum. 
Pappus Brown : blades of the stem-leaves auriculate and clasp- 
ing. - 3. M. spicatum. 
1. M. villosum (J acq.) Small. Stem 9-20 dm. tall: blades of the stem- 
elis irregularly dentate, 8-20 cm. long: inner bracts of the involucre linear- 
lanceolate: ligules blue: eee e 4.5-5.5 mm. 
Dus .— Borders of woods, open woods, and 
thickets, various provinces, Fla. to La., 
Nebr., and N. Y. 
oridanum (L.) DC. Stem 10-30 
pinnatifid, 2-45 cm. long: inner bracts o 
the involucre linear: ligules blue: achene 
6—7 mm. long.—Rich s thiekets, and 
banks, various provinces, Fla. to Tex., 
Nebr. and N. Y.—(W. 1j 
3. M. n icatum (Lam.) Small. Stem 9-35 
dm. tall: blades of the ups pes Or 
2:0) (merely denticulate in M. spica 
tum integrifolium): ligules E yellowish or bluish: achene 4—5 mm. long. 
—Low grounds, thickets, and open woods, various provinces, rarely Coastal 
Plain, N. C. to Colo., Man., “and New 
16. SONCHUS [Tourn.] L. Annual or perennial, tall caulescent herbs. 
Leaf-blades iple toothed, or pinnatifid, sometimes spiny margined. 
l sub 
Heads 
erect. Involucres ovoid or globose pon flattened. Pappus deciduous. 
—AÀbout 45 species, natives of the Old World.—Spr.-fall.—SOw-THISTLES. 
Leaf-auricles rounded: achenes smooth and 3-ribbed. 1. S. asper. 
Leaf-auricles acute: achenes transverse-wrinkled and striate. 2. S. oleraceus. 
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