WILD FLOWERS OF NEW YORK 321 



rounding the yellow disk. Bracts of the involucre in two series, the inner 

 oblong and longer than the outer lanceolate bracts. Achenes (seeds) 

 oblong, not winged, the pappus reduced to a very short truncate crown. 



Open swamps near the coast, Massachusetts to Georgia. Flowering in 

 July and August. 



Small or Nodding Bur Marigold 

 Bidens cernua Linnaeus 



Plate 262 



An annual, with erect or partially prostrate stems, smooth or hispid 

 and usually much branched, from a few inches to 3 feet high. Leaves 

 sessile, opposite, usually somewhat united around the stem. Lanceolate 

 to oblong-lanceolate in shape, coarsely and sharply toothed, smooth, long 

 pointed, 3 to 6 inches long, one-fourth to I inch wide. Heads numerous, 

 at least on vigorous plants, globose, short-stalked, one-half to I inch broad, 

 nodding after or during flowering, consisting of six to ten short, yellow 

 ray flowers, one-fourth to one-half of an inch long, surrounding the globose, 

 yellow or brownish- yellow disk. Very often the ray flowers are absent. 

 Bracts of the involucre in two series, the outer green and leaflike and much 

 larger than the membranaceous, yellowish-margined inner bracts. Seed a 

 wedge-shaped achene, about one-sixth of an inch long, retrorsely hispid on 

 the margins, and with usually four downwardly barbed awns at the 

 summit. 



In wet soil and swamps, Nova Scotia to Hudson bay and British 

 Columbia south to North Carolina, Missouri and California. Also found 

 in Europe. Flowering from July to October. Dwarf forms are frequent. 



Sneezeweed; False or Swamp Sunflower 



Helenium autumnale Linnaeus 



Plate 26ia 



Stems stout and branching, 2 to 6 feet high, aromatic and resinous, 

 from a perennial root. Leaves firm, oblong-lanceolate, narrowed to a 

 sessile base and pointed at the apex, usually toothed, 2 to 5 inches long, 



