Genus 22. 



CHICORY FAMILY. 



33 * 



7. Hieracium scabrum Michx. Rough 

 Hawkweed. Fig. 4100. 



H. scabrum Michx. Fl. Bor. Am. 2: 86. 1803. 



Stem stout, leafy, mostly hirsute or hispid be- 

 low and glandular-pubescent above, strict, l-4 

 high. Leaves hirsute, obovate, oblong, or broadly 

 spatulate, 2 '-4' long, l'-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 usually numerous, 

 6"-8" broad, corymbose- or racemose-paniculate ; 

 peduncles stout, densely glandular ; involucre 4"-S 

 high, glandular, its principal bracts in I series, 

 linear, acute with a few very small outer ones ; 

 flowers yellow; achenes columnar, truncate; pap- 

 pus brown. 



In dry woods and clearings, Nova Scotia to Minne- 

 sota, Georgia, Iowa, and recorded from Nebraska and 

 Kansas. July-Sept. 



8. Hieracium Gronovii L. Gronovius' or 

 Hairy Hawkweed. Fig. 4101. 



Hieracium Gronovii L. Sp. PI. 802. 1753. 



Stem stiff, mostly slender, leafy and villous or 

 hirsute, at least below, sometimes nearly leafless, 

 i-3 high. Leaves villous or hirsute, the basal 

 and lower ones obovate or spatulate, denticulate 

 or entire, obtuse, 2'-6' long, usually narrowed into 

 petioles; stem leaves mostly sessile, oblong or oval, 

 obtuse or acute, narrowed or broad at the base, 

 the upper gradually smaller ; heads numerous, 

 racemose-paniculate, S"-8" broad; peduncles glan- 

 dular and canescent, slender ; involucre about 4" 

 high, somewhat canescent, its principal bracts in 1 

 series, linear-lanceolate, acute, with several very 

 small outer ones ; flowers yellow ; achenes spindle- 

 shaped, with a tapering summit ; pappus brown. 



In dry soil, Massachusetts to Ontario, Illinois, 

 Kansas, Florida, Louisiana and Texas. Santo Do- 

 mingo. July-Sept. CatVear. 



9. Hieracium marianum Willd. Mary- 

 land Hawkweed. Fig. 4102. 



H. marianum Willd. Sp. PI. 3 : 1572. 1804. 



Stems usually solitary, slender, pilose-pubescent, 

 at least below, paniculately branched above, 2-3 

 high, bearing 2-7 leaves. Basal leaves obovate, 

 oblanceolate or oblong, ascending or erect, obtuse, 

 narrowed at the base, sessile or petioled, hirsute, 

 at least on the veins beneath, entire or glandular- 

 denticulate, 2-8' long, i'-2' wide, not purple-veined, 

 mostly glabrous above, those of the stem similar, 

 mostly smaller; heads commonly numerous, co- 

 rymbose-paniculate, 6"-io" broad, 15-40-flowered, 

 slender-peduncled; peduncles more or less glan- 

 dular and sometimes canescent ; involucre about 

 4" high, its principal bracts in 1 series, linear- 

 lanceolate, acute, or acuminate, glabrous or nearly 

 so, with a few short outer ones; achenes col- 

 umnar, truncate; pappus brown, not copious. 



In dry woods and thickets. New Hampshire to 

 southern New York, Pennsylvania, Ohio, Kentucky, 

 Alabama and Florida. May-July. 



Hieracium alleghaniense Britton, of the mountains of West Virginia, has 

 abundantly leafy and no tuft of basal leaves at flowering time. 



the stem more 



