284 NEW YORK STATE MUSEUM 



of an inch high, glandular-hairy, the principal bracts linear and pointed, 

 in one series with a few very small outer ones. 



In dry woods and clearings, Nova Scotia to Minnesota, Georgia and 

 Iowa. Flowering from July to September. 



Rattlesnake-weed ; Poor-Robin' s-plantain 



Hieracium venosum Linnaeus 



Plate 225 



A perennial herb, sending up a smooth, usually solitary and leafless 

 stem, paniculately branched above, I to 3 feet high, with a tuft of basal 

 leaves spreading on the ground. Leaves smooth or sometimes hairy, 

 characteristically marked with purple veins, suggestive of the markings on 

 a snakeskin, oblong- spat ulate, blunt at the apex, narrowed at the base 

 into petioles, though sometimes sessile, i to 5 inches long, one-half to ij 

 inches wide, paler on the under surface, the margins glandular-denticulate. 

 Inflorescence consisting of several yellow heads, about two-thirds of an 

 inch broad, each containing fifteen to forty ray flowers, and borne on rather 

 long, slender, spreading peduncles, smooth or slightly glandular-hairy. 

 Involucre cylindric, about one-fourth of an inch high, with one series of 

 long, narrow, nearly smooth bracts and a few short outer ones. 



In dry woods and thickets, usually in poor or sandy soil. Maine and 

 Ontario to Manitoba, south to Georgia, Kentucky and Nebraska. Flow- 

 ering from late in May to October. Individuals are sometimes found 

 without the purple-colored veins in the leaves. 



Gall-of-the-earth ; Tall Rattlesnake-root 



Nabalus trifoliolatus Cassini 



Plate 226 



Stems smooth, stout and sometimes purplish, with milky juice, leafy 

 and 3 to 9 feet high, from a perennial root. Leaves thin, the lower ones 

 very long petioled, the upper short petioled or sessile, all usually divided 

 into three segments, which are sometimes stalked, irregularly toothed, or 



