Vol. III.] 



CHICORY FAMILY. 



13. Hieracium scabrum Michx. 

 Rough Hawkweed. (Fig. 3573.) 



Hieracium scabrum Jlichx. Fl. Bor. Am. 2: 86. 



1S03. 



Stem stout, leafy, densely hirsute or hispid be- 

 low and glandular-pubescent above, strict, i°- 

 4° high. Leaves hirsute, obovate, oblong, or 

 broadly spatulate, 2'-4' long, i'-2' wide, obtuse 

 at the apex, narrowed to the sessile base or the 

 lowest into margined petioles, denticulate; no 

 tuft of basal leaves at flowering time; heads usu- 

 ally numerous, 6"-8" broad, racemose panicu- 

 late; peduncles stout, densely glandular; invo- 

 lucre 4"-5" high, glandular, its principal bracts 

 in I series, linear, acute with a few very small 

 outer ones; flowers yellow; acheucs columnar, 

 truncate; pappus brown. 



In dry woods and clearings, Nova Scotia to Min- 

 nesota, Georgia, Nebraska and Kansas. ]uly-.S?pt. 



14. Hieracium Gronovii L,. Grono- 



vius' Hawkweed. Hairy Hawkweed. 



(Fig- 3574-) 



Hieracium Grotiovii L. Sp. PI. 802. 1753. 



Stem stiff, mostly slender, leafy and villous 

 or hirsute, at least below, sometimes nearly leaf- 

 less, i°-3° high. Leaves villous or hirsute, 

 the basal and lower ones obovate or spatulate, 

 denticulate or entire, obtuse, 2'-6' long, usu- 

 allj' narrowed into petioles; stem leaves mostly 

 sessile, oblong or oval, obtuse or acute, nar- 

 rowed or broad at the base, the upper gradu- 

 ally smaller; heads numerous, racemose-pan- 

 iculate, 5"-S" broad; peduncles glandular and 

 canescent, slender; involucre about 4" high, 

 somewhat canescent, its principal bracts in i 

 series, linear-lanceolate, acute, with several 

 very small outer ones; flowers yellow; achenes 

 spindle-shaped, with a tapering summit; pap- 

 pus brown. 

 In dry soil, Massachusetts to Ontario, Illinois, Florida and Louisiana. Julj'-Sept. 



15. Hieracium longipilum Torr. Long-bearded Hawkweed. (Fig. 3575.) 



H. lo>igif>ilu»iTorr.\ Hook. Fl. Bor. Am. I: 298. 1833. 

 Jlieracinvi barbatuni Nutt. Journ. Phil. Acad. 7: 70. 

 1834. NotTausch. 1828. 



Stem, at least its lower portion, and leaves 

 densely covered with long brown rather rigid 

 bristly hairs Y^'-i' long, arising from papillae. 

 Stem very leafy below, stiff, simple, 2°-3//^° 

 high; basal and lower leaves spatulate or oblong, 

 obtuse, mostly entire, 4'-S' long, narrowed into 

 margined petioles, the upper lanceolate or spatu- 

 late, mostly sessile, the uppermost small and 

 bract-like; heads not very numerous, racemose 

 or racemose-paniculate, %"-\o" broad; pedun- 

 cles short, stout, tomentose and glandular; invo- 

 lucre 4"-5" high, its principal bracts in i series, 

 linear-lanceolate, acuminate, with several short 

 subulate outer ones; flowers yellow; achenes fusi- 

 form with a slightly tapering summit; pappus 

 brown. 



Prairies and dry woods, Ontario to Minnesota, Illi- 

 nois, Kansas and Texas. July-Sept. 



