WOOTON AND STANDLEY—FLORA OF NEW MEXICO. 667 
24: PYRROCOMA Nutt. 
Perennial herb with usually simple stems, alternate leaves, and large showy heads 
of yellow flowers with bright yellow rays; bracts foliaceous, oblong, mostly obtuse, 
numerous, appressed; achenes linear, 3-angled, striate, glabrous; pappus of slender 
tawny bristles. 
1. Pyrrocoma crocea (A. Gray) Greene, Erythea 2: 69. 1894. 
Aplopappus croceus A. Gray, Proc. Acad. Phila, 1863: 65, 1864. 
Pyrrocoma amplectens Greene, Leaflets 2: 10. 1909. 
Type Locatity: Middle Park, Colorado. 
Rance: Wyoming to Arizona and New Mexico. 
New Mexico: Chama; El Rito; Baldy; Santa Fe and Las Vegas mountains; Mogollon 
Mountains. Meadows in the mountains, in the Transition and Canadian zones. 
A common and very handsome plant in the open meadows of the higher mountains. 
When growing it suggests the more common Dugaldea hoopesii and is likely to be taken 
for that by careless observers. The type of P. amplectens was collected on the Middle 
Fork of the Gila by Metcalfe (no. 540). 
25. OREOCHRYSUM Rydb. 
Nearly glabrous perennial herb, in aspect like the Solidagos, with numerous basal 
leaves, a low leafy stem, and numerous rather large corymbose heads of yellow flowers; 
involucre campanulate, the broad, foliaceous or chartaceous, oblong, obtuse bracts 
in 2 or 3 unequal series; rays numerous, small, narrow, pale yellow; achenes short, 
glabrous or nearly so. 
1. Oreochrysum parryi (A. Gray) Rydb. Bull. Torrey Club 38: 153. 1906. 
Aplopappus parryi A. Gray, Amer. Journ. Sct. IT. 38: 289. 1862. 
Solidago parryi Greene, Erythea 2: 57. 1894. 
Tyre Locatiry: Upper Clear Creek, Colorado. 
Rance: Wyoming to Arizona and New Mexico. 
New Mexico: Tunitcha Mountains; Sandia Mountains; Jemez Mountains; Santa Fe 
and Las Vegas mountains; Hillsboro Peak; Mogollon Mountains; White and Sacra- 
mento mountains. Deep woods, in the Canadian and Hudsonian zones. 
The plant of the White and Sacramento mountains has narrower bracts and smaller 
heads than the typical form found farther north and west. 
26. TONESTUS A. Nels. 
Low herbaceous perennial from a thick woody root; stems simple, monocephalous; 
leaves linear-spatulate; bracts oblong, obtuse, the outer foliaceous; rays conspicuous, 
numerous; achenes pubescent, the pappus white, capillary. 
1. Tonestus pygmaeus (Torr. & Gray) A. Nels. Bot. Gaz. 37: 262. 1904. 
Stenotus pygmaeus Torr. & Gray, Fl. N. Amer, 2: 237. 1841. 
Aplopappus pygmaeus A. Gray, Amer. Journ. Sci. II. 38: 239. 1862. 
Macronema pygmaeum Greene, Erythea 2: 73. 1894. 
Type Locauity: ‘Rocky Mountains, probably in about lat. 41°.”’ 
Rance: Wyoming to northern New Mexico. 
New Mexico: Pecos Baldy; Baldy; Truchas Peak. High mountains, in the 
Arctic-Alpine Zone. 
27. EUTHAMIA Nutt. 
Tall, paniculately branched perennial with glabrous stems and alternate linear 
leaves; heads small, glomerately cymose, each with numerous flowers; rays small and 
inconspicuous, more numerous than the disk flowers; achenes villous, short, turbinate; 
receptacle fimbriolate. 
