Genus 22. 



CHICORY FAMILY. 



13. Hieracium Pilosella L. Mouse-ear Hawk- 

 weed. Fig. 4106. 



Hieracium Pilosella L. Sp. PI. 800. 1753. 

 Hieracium Pilosella peleterianum Mer. Nouv. Fl. Paris, Ed. 

 2, 230. 1821. 



Stoloniferous, pilose-pubescent throughout; stolons 

 leafy, rooting, slender, 3'-i2' long. Scape slender, 

 erect, 4'-i5' high, leafless, with a single head, or some- 

 :imes 2-4; leaves oblong or spatulate, entire, obtuse or 

 acutish at the apex, narrowed into petioles, often white- 

 toinentose beneath, 1Y-3' long, 4"-8" wide; head 1' 

 broad or more; flowers yellow; principal bracts of the 

 involucre in 1 or 2 series, linear, acuminate, pubescent, 

 usually with I or 2 exterior ones ; achenes oblong, trun- 

 cate ; pappus a single row of slender bristles. 



Dooryards and fields, Prince Edward Island to Ontario, 

 New York, Pennsylvania and Michigan. Adventive from 

 Europe. Ling-gowans. Felon-herb. Mouse-bloodwort. May- 

 Sept. 



15. Hieracium pratense Tausch. 

 Hawkweed. Fig. 4108. 

 H. pratense Tausch, Flora 11 : Part 1, Erg. 56. 1828 



Stoloniferous, hirsute or pilose with long hairs 

 those of the stem blackish. Stem scapose, simple 

 l-2 high, often bearing I or 2 leaves below the 

 middle ; basal leaves numerous, tufted, light green 

 oblanceolate to oblong, obtuse, 2'-$' long, s"-io' 

 wide, narrowed into margined petioles, or to a 

 sessile base, entire, or with few distant minute 

 glandular teeth, hirsute on both sides; heads 

 several or numerous, corymbose-paniculate, 10" 

 wide, or less; flowers yellow; peduncles glandular 

 and often tomentose ; bracts of the involucre 

 linear-lanceolate, acuminate, glandular and pilose ; 

 achenes columnar, truncate. 



Fields and roadsides, Quebec to southern New 

 York and Pennsylvania. Naturalized or adventive 

 from Europe. 



14. Hieracium floribundum Wimm. & 



Grab. Smoothish Hawkweed. 



Fig. 410". 



Hieracum floribundum Wimm. & Grab. Fl. Siles. 2 2 : 

 204. 1829. 



Stoloniferous; plant glaucous-green; scape 

 loosely hirsute and more or less glandular- 

 pubescent, slender, i-2J high, the stolons some- 

 times 8' long. Basal leaves tufted, narrowly 

 oblanceolate, acutish or obtuse, 2'-6' long, gla- 

 brous or very nearly so above, the margins and 

 midvein beneath more or less hirsute; stem- 

 leaves none, or rarely I or 2 near the base; 

 flowers several, 1' broad or less, corymbose; 

 peduncles glandular; rays bright yellow; bracts 

 of the involucre in about 2 series, hirsute. 



In fields. New Brunswick and Maine to New York. 

 Naturalized from Europe. June-Aug. 



Field 



