726 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Range: Wyoming and Colorado to New Mexico and Arizona. 



New Mexico: Hurrah Creek; Dulce; Timitcha Mountains; Pajarito Park; Santa 

 Fe and Las Vegas mountains; Raton; Fort Bayard; Hop Canyon; West Fork of the 

 Gila; Kingston; Animas Valley; Organ Mountains; White Mountains; Capitan Moun- 

 tains. Open liills and meadows, in the Transition Zone. 



109. HELENIUM L. Sneezeweed. 



Erect, corymbosely branched,, perennial herb, with alternate decm'rent leaves 

 and winged stems; involucre of 1 or 2 series of linear spreading bracts; receptacle 

 subglobose, naked; rays yellow, drooping; achenes turbinate, ribbed; pappus of 5 to 

 8 ovate, often lacerate or toothed scales. 



1. Helenium montanum Nutt. Trans. Amer. Phil. Soc. n. ser. 7: 384. 1841. 



Helenium autumnale pubescens Britton, Mem. Torrey Club 5: 339. 1894. 



Type locality: "In the Rocky Mountain range, on the borders of Lewis' River, 

 etc." 



Range: Washington and Saskatchewan to New Mexico and Mississippi. 



New Mexico: Taos; Rociada; Pecos; Tularosa Creek; Roswell. Wet meadows, in 

 the Upper Sonoran Zone. 



This species is very near Helenium autumnale, and perhaps hardly separable from it. 



110. DUGALDEA Cass. Owl's claws. 



Tall stout perennial herb, with mostly basal, oblanceolate, impressed-punctate 

 leaves and several large long-pedunculate heads of bright yellow flowers; involucral 

 bracts in 2 series, numerous, finally reflexed; flowers numerous; achenes villous, 

 the palese of the pappus hyaline, lanceolate, with long-attenuate tips. 



1. Dugaldea hoopesii (A. Gray) Rydb. Mem. N. Y. Bot. Gard. 1: 425. 1900. 



Helenium hoopesii A. Gray, Proc. Acad. Phila. 1863: 65. 1864. 



Type locality: "South Park and west of Pike's Peak," Colorado. 



Range: Montana and California to New Mexico and Arizona. 



New Mexico: Tunitcha Mountains; Chama; Santa Fe and Las Vegas mountains; 

 Baldy; Mogollon Mountains; Iron Creek; White and Sacramento mountains. Mead- 

 ows in the mountains, in the Transition and Canadian zones. 



The common name which we have appUed to this very abundant and showy Rocky 

 Mountain plant is a translation of the one used by the Navahos. It refers to the 

 appearance of the involucral bracts, especially in age. 



111. FLAVERIA Juss. 



Annuals with opposite, sessile or petiolate, entire or dentate leaves and dense 

 clones of small heads of yellow flowers; involucral bracts 2 to 8, subequal; receptacle 

 naked or setose; rays usually one to each head; achenes linear-oblong, glabrous, 8 to 

 10-ribbed; pappus none. 



KEY to the species. 



Heads 10 to 15-flowered; leaves perfoliate, entire 1. F. chloraefolia. 



Heads 2 to 8-flowered; leaves not perfoliate, dentate. 



Receptacle setose; leaves lanceolate 2. F. repanda. 



Receptacle not setose; leaves Unear-lanceolate 3. F. campestris. 



1. Flaveria chloraefolia A. Gray, Mem. Amer. Acad. n. ser. 4: 88. 1849. 

 Type locality: "Pelayo, northwest of Mapimi, in the State of Chihuahua." 

 Range: Western Texas to southeastern New Mexico and northeastern Mexico. 

 New Mexico: Roswell (Cockcrell). 



