1492 CICHORIACEAE 
inner Nun of the involucre 8-9 mm. long, sparingly hirsute on the back with 
long : pappus dingy straw-colored.—Mt. peaks, Blue Ridge, N. C. and 
id 
5. N. serpentarius (Pursh) Hook. Stem 3-12 dm. tall, pos larger 
leaf-blades Pci lobed: inner bracts of the involuere 9—11 ong, often 
ciliate at the tip: pappus straw-colored.— (LION 'S-FOOT. 4 “Fields, woods, and 
thickets, ane provinces, Fla. to Miss., Ont., and Mas 
liatus Cass. Stem 8-26 dm. tall glabrous: larger leaf-blades 
podately 1 lobed: inner bracts of the involucre 9-11 mm. long, wholly glabrous: 
pappus light-brown.— (GALL-OF-THE-EARTH. )— "o ods and thickets, various 
provinees, rarely Coastal Plain, N. C., and Ten 
N. cylindricus Small. Stem 3-9 dm. tall, glabrous: ee leaf- eda 
pinnately 3—5-lobed: inner bracts of the involucre 9-10 mm. long, with s 
ered hairs on the back: pappus pale-brown.—Mt. slopes, Blue Ridge a foi 
lachian Plateau, N. C. to Tenn. and Ky. 
N. virgatus (Michx.) DC. Stem 6-12 dm. tall, glabrous: leaf-blades 
Dd to db te in outline, pinnatifid, E o toothed: outer 
braets of the involuere ciliate, the inner ones ong, glabrous: ligules 
us Or pub onse straw- colored min b Up Plain, Fla. to Miss. 
and N. J. 
9. N. asper (Michx.) T. & G. Stem 9-20 dm. tall, pubescent: leaf- oe 
obovate, oblong or ee eR te to coarsely toothed: bracts of the 
volucre hirsute, the inner ligules cream-co olored: pappus sordid- n or a 
straw-colored.—Dry soil, various Ta La. to Tenn., S. Dak., and Ohio. 
10. N. e d DC. Stem 9-21 dm. tall, finely pubescent at 
least when young: leaf-blades ovate to pori ie finely or coarsely toothed: 
bracts of the oues ruri -hirsute, the inner 9—10 mm. lon : ligules cream- 
eolored: pappus dirty-brown.—Rich soil A “thickets, various provinces N o 
Coastal Plain, Tenn. to Kans., Minn., and N. Y. 
9. HIERACIUM L. Perrennial caulescent or scapose herbs. Leaf- 
blades entire or toothed. Heads erect, paniculate or corymbose. Involucres 
usually narrow: main bracts unequal in length, often in 2 or 3 series, with a 
ealyeulum. Corolla yellow, rarely white or orange. Achenes fusiform or 
eolumnar, ribbe Pappus of 1 or 2 series of sordid or brownish HN 
bristles, or ay white.—About 300 species, natives of the north temperate 
zone and South America.—HAWKWEEDS. 
Flowering stem leafy. I. PANICULATA. 
Flowering stem leafless.. II. VENOSA. 
I. PANICULATA 
Achene columnar 
Inflorescence more or less elongate, not flat-topped. 
Pa 
nicle lax: heads few- (10- T flowered. 1. H. paniculatum. 
Panicle stiff : heads inn ny- (40-50) flowered. 2. H. scabrum. 
Inflorescence corymbifor 3 
ea eo 2 40) flowered: peduncles densely 
pubes . H. marianum. 
Heads iv (10-15) flowered : peduncles glaucous. . H. Scribneri. 
Achene fusiform 
Inflorescence corymbifor 
appus brown. 
H. meoo cenh alon: 
Pappus white. 
3 
4 
In Ao rescence. ‘elongate, ee o. H. Gronovii. 
6. 
T. H. argyraeu 
