COMPOSITE. (COMPOSITE FAMILY.) 197 



commonly ^ or f the length of disk-conjlla. — From Arizona to British 

 Columbia and eastward across the continent. 



56. GAIL LARD I A, Fougeroux. 



Herbs, ^vith alternate leaves, and ample sliowy heads on terminal pedunck-.s. 

 Ours are more or less pubescent or hirsute and leafy-stemmed, with yellow 

 rays and disk-flowers apt to turn brown, villous akenes, and scales of tlie pap. 

 pus slender-awned. 



1. G. aristata, Pursh. More or less hirsute, often 2 feet or more liigh : 

 leaves lanceolate or broader, or lower spatulate, //-o/n entire to laciniate-dcntate or 

 sinuate-pinnatijid : rays in the largest heads 1^ inches long: lobes of disk-rnmlla 

 subulate-acute and tipped with a cusp: papjius aristate. — From New Mexico 

 and S. Colorado to Orei^on, British Columbia, and the Sa,skatchewan. 



2. G. pinnatifida, Torr. Cinereous-pubescent : peduncles scapiform or 

 from short leafy stems, 5 to 10 inches long: some or even all the httns pinna- 

 tijid, sometimes linear or with linear lobes, sometimes spatulate and sinuate 

 or even entire : teeth of the disk-corolla short and broad, obtuse, poititless: pappus- 

 scales lanceolate. — On the plains, Colorado and Arizona to W. Texas. 



57. FLAVERIA, Juss. 



Glabrous herbs; with small and fascicled or glomerate heads of yellowish 

 or yellow flowers, and opposite sessile leaves; akenes mostly smooth and 

 glabrous. 



1. F. angustifolia, Pers. Erect, a foot or two high : leaves from linear 

 to lanceolate, serrulate or entire, sessile by broadish or little contracted ba^^e : 

 heads in subsessile or short-pedunculate or leafy-involucrate chiefly terminal 

 glomerules : involucre of mostly 3 bracts, 3 to 5-flowered or some only 2- 

 flowered. — Alkaline soil, E. Colorado and New Mexico to W. Texa^s. 



58. DYSODIA, Cav. Fetid Marigold. 



Herbs, mostly strong-scented, with alternate or opposite leaves, and solitary 

 or somewhat paniculate heads of yellow flowers. Ours has an inv»)lucre with 

 accessory bracts, pubescent akenes, and opposite pinnately divided leaves. 



1. D. chrysanthemoides, Lag. Much-branched and ill-scented annual, 

 leafy up to the sul)sessile or short-peduncnlato small heads: leaves 1 to 2-pin- 

 nately parted into linear lobes: involucre ])uri)lish-tinged or greenish, of S or 

 10 scariuus-tipped oblong bracts, and some linear loose accessory ones : rays 

 Tew and inconspicuous, not surpassing the disk. — From Arizona and Colorado 

 to Minnesota and Louisiana, and now spreading e:istward to the Atlantic 

 States. 



59. HYMENATHERUM, Cas». 



Low herbs, mostly pleasant-scented; with alternate or opposite leaves, and 

 rather small radiate heads of yellow flowers. Our species is wholly glabrouj*. 



1- H. aureum, Gray. A span or two high, erect or diffuse, mucli 

 branched, bearing numerous short-peduncled heads: leaves mostly alternate. 



