33 



CICHORIACEAE. 



VOL. III. 



4. Hieracium scabriusculum Schwein. 

 Narrow-leaved Hawkweed. Fig. 4097. 



H. scabriusculum Schwein. in Long's Exp. 2 : 394. 



1824. 



Stem rather slender, glabrous or puberulent, 

 sometimes hispid below, usually very leafy nearly 

 or quite up to the inflorescence, usually simple, 

 \-2\ high. Leaves lanceolate or linear-lanceo- 

 late or the lowest spatulate, entire, denticulate or 

 sometimes laciniate-dentate, acute or acuminate, 

 narrowed to a sessile base, i'-3' long, 2," -7" wide, 

 glabrous above, mostly somewhat pubescent be- 

 neath, the margins commonly ciliolate ; no tuft 

 of basal leaves at flowering time; heads few or 

 several, corymbose, about i' broad ; peduncles 

 rather stout, canescent; involucres 5" -7" high, 

 glabrous or somewhat pubescent, its bracts im- 

 bricated in 2-3 series, the outer spreading; flow- 

 ers bright yellow ; achenes columnar, truncate ; 

 pappus copious, brownish. 



Minnesota to Nebraska, Saskatchewan, British 

 Columbia and Oregon. Included in our first edition 

 in the similar Old World H. umbellatum L. Appar- 

 ently erroneously recorded from the St. Lawrence 

 River. June-Aug. 



5. Hieracium longipilum Torr. Long-bearded 

 Hawkweed. Fig. 4098. 



H. longipilum Torr.; Hook. Fl. Bor. Am. i: 298. 1833. 

 Hieracium barbatum Nutt. Journ. Phil. Acad. 7 : 70. 

 1834. Not Tausch. 1828. 



Stem, at least its lower portion, and leaves densely 

 covered with long brown rather rigid bristly hairs 

 i'-i' long, arising from papillae; stem very leafy 

 below, stiff, simple, 2-3i high. Basal and lower 

 leaves spatulate or oblong, obtuse, mostly entire, 

 4'-8' long, narrowed into margined petioles, the 

 upper lanceolate or spatulate, mostly sessile, the 

 uppermost small and bract-like ; heads not very 

 numerous, racemose or racemose-paniculate, 8"-io ' 

 broad ; peduncles short, stout, tomentpse and glandu- 

 lar; involucre 4"-5" high, its principal bracts in I 

 series, linear-lanceolate, acuminate, with several 

 short subulate outer ones ; flowers yellow ; achenes 

 fusiform with a slightly tapering summit; pappus 

 brown. 



Prairies and dry woods, Ontario to Minnesota, Illi- 

 nois, Kansas and Texas. July-Sept. 



6. Hieracium paniculatum L. Panicled 

 Hawkweed. Fig. 4099. 



Hieracium paniculatum L. Sp. PI. 802. 1753. 



Glabrous throughout, or somewhat pilose-pu- 

 bescent below, stem paniculately branched above, 

 leafy, slender, i-3 high. Leaves thin, lanceo- 

 late or oblong-lanceolate, acute or acuminate at 

 the apex, narrowed to a sessile base, or the lowest 

 into petioles, denticulate or dentate, 2'-6' long, 

 3"- 1 2" wide ; no tuft of basal leaves at flowering 

 time; heads $"-/" broad, commonly numerous, 

 corymbose-paniculate, 12-20-flowered ; peduncles 

 slender, often drooping, quite glabrous or some- 

 times glandular; involucre about 3" high, glabrous 

 or nearly so, its principal bracts in I series, linear, 

 acute with a few very small outer ones at the 

 base ; flowers yellow ; achenes columnar, truncate ; 

 pappus brown, not very copious. 



In dry woods, Nova Scotia to Ontario, Michigan, 

 Georgia, Alabama and Tennessee. Ascends to 4600 

 ft. in Virginia. July-Sept. 



