described by Torrey and Gray, and not with that of Tucker- 
mannia. ee 
Descr. A robust branched perennial, three to four feet 
high, everywhere quite glabrous. Stems and branches smooth, 
terete. Leaves scattered, four to ten inches long, spreading 
and recurved, bipinnatifid; segments lax, recurved, and di- 
varicate, linear, acute, bright-green. Peduncles stout, four to 
eight inches long, one-headed. Heads golden-yellow, three 
to four inches in diameter, sweet-scented. Znvolucre double ; 
outer of six to eight spreading, green, herbaceous, linear, acute 
bracts; inner of two series of oblong, obtuse, membranous, 
very appressed, coloured bracts. Receptacle covered with 
linear-lanceolate acuminate palew as long as the disk flowers. 
Flowers of the ray about twenty, female; corolla-tube short, 
limb linear-oblong, one-third of an inch broad, minutely three- 
toothed at the rounded tip; flowers of disk crowded ; tube 
slender, with a ring of hairs about the middle, limb small, 
five-toothed. Achenes oblong, compressed, smooth, without 
a trace of pappus.—J. D. H. ; 
Fig. 1, Flower of ray ; 2, do. of disk; 3, palea of receptacle :—all enlarged. 
