CICHORIACEAE. 



VOL. III. 



10. Hieracium venosum L. 



Rattlesnake-weed. Poor Robin's Plantain. 

 Fig. 4103. 



Hieracium venosum L. Sp. PI. 800. 1753. 



Stems solitary or several from the same root, 

 slender, glabrous, or with a few hispid hairs near 

 the base, or also above, leafless or with 1-3 leaves, 

 paniculately branched above, i-3 high. Basal 

 leaves tufted, spreading on the ground, obovate, oval 

 or oblong-spatulate, mostly obtuse, narrowed at the 

 base, sessile or petioled, I -4' long, i'-ii' wide, usu- 

 ally purple-veined, glabrous or more or less hirsute, 

 pale beneath, some or all of them glandular-der.Scu- 

 late ; heads commonly numerous, s"-8" broad, -5- 

 4O-flowered, slender-peduncled ; peduncles glabrous, 

 or slightly glandular; involucre about 3" high, its 

 principal bracts in i series, glabrous or nearly so, 

 with a few short outer ones; achenes columnar, trun- 

 cate; pappus brown, not copious. 



Dry woods and thickets, Maine to Ontario and Mani- 

 toba, south to Georgia, Kentucky and Nebraska. Ascends 

 to 4200 ft. in North Carolina. Early or vein-leaf hawk- 

 weed. Striped blood wort. Snake-plantain. Hawkbit. 

 Adder's-tongue. May-Oct. 



ii. Hieracium Greenii Porter and Britton. 



Green's Hawkweed. Fig. 4104. 

 Pilosella spathulata Sch. Bip. Flora 45: 439. 1862. Not 



Hieracium spathulatum Scheele, 1863. 

 Hieracium marianum var. spathulatum A. Gray, Syn. Fl. 



i : Part 2, 446. 1886. 

 H. Greenii Porter and Britton, Bull. Torr. Club 20: 120. 



1893. 



Stem entirely glabrous up to the branches, rather 

 slender, leafless or rarely with i or 2 leaves. ij-2i 

 high. Basal leaves tufted, ascending, spatulate, ob- 

 long, or obovate, obtuse, narrowed at the base, mostly 

 petioled, glandular-denticulate or entire, villous- 

 pubescent or somewhat hispid, 4'-?' long, -2' wide; 

 heads corymbose-paniculate, several or numerous, 

 3O-4O-flowered, slender-peduncled, 8"-io" broad ; 

 peduncles and branches canescent-tomentose and 

 glandular; involucre 5" high, its principal bracts in 

 i series, linear, acute, densely pilose-glandular; 

 flowers bright yellow; achenes columnar, truncate; 

 pappus brownish, not copious. 



In dry soil, mountains of Pennsylvania to Ohio, Vir- 

 ginia and West Virginia. May-June. 



King- 



12. Hieracium florentinum All. 

 devil. Fig.,4io5. 



H. florentinum All. Fl. Ped. i : 213. 1785. 



Stolons wanting; stem glabrous, or somewhat 

 hispid, glaucous, slender, ii-3 high, bearing 1-3 

 leaves near the base. Basal leaves tufted, nar- 

 rowly oblong, oblanceolate, or spatulate, entire, 

 obtuse or acute at the apex, narrowed below into 

 margined petioles, more or less hirsute with stiff 

 hairs, or glabrous, 2'-4' long, 3"-7" wide; heads 

 several or numerous, corymbose, 4"-6" broad ; 

 peduncles mostly short, pilose and glandular; 

 involucre about 3" high, its bracts linear, acute 

 or acuminate, pilose and somewhat glandular, 

 imbricated in about 2 series; flowers yellow; 

 achenes oblong, truncate; pappus a row of slen- 

 der brownish bristles. 



In fields, meadows and along roadsides, New York 

 and Ontario to Quebec and Maine ; a troublesome 

 weed. Naturalized from Europe. Referred in our 

 first edition to H. praealtum, also native of Europe, 

 which differs in having long leafy branches from the 

 base, and is recorded as established in a meadow at 

 Andover, Massachusetts. June-Sept. 



