658 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
New Mexico: Cross L Ranch; Raton; San Rafael; Animas Valley; Organ Moun- 
tains; White Mountains. Plains and low hills, in the Upper Sonoran and Transition 
zones, 
7. Gutierrezia juncea Greene, Pittonia 4: 56. 1899. 
Type LocaLiry: Near Gray, New Mexico. Type collected by Miss Josephine 
Skehan (no. 78). 
Ranae: Oklahoma and Colorado to New Mexico and Arizona, 
New Mexico: Clayton; McIntosh; Carrizozo; Gray; Nara Visa; Estancia; White 
Oaks; Endee; Ogle. Plains, in the Lower and Upper Sonoran zones. 
8. Gutierrezia tenuis Greene, Pittonia 4: 55. 1899. 
Gutierrezia linearis Rydb. Bull. Torrey Club 31; 647. 1904. 
Gutierrezia goldmanii Greene, Repert. Nov. Sp. Fedde 7: 195. 1909. 
Type Locauity: Foothills of the mountains back of Silver City, New Mexico. 
RanGE: Colorado and Arizona to western Texas. 
New Mexico: Common at lower altitudes nearly throughout the State. Plains and 
hills, in the Lower and Upper Sonoran zones, 
This is by far our commonest species, It is found almost everywhere at low and 
middle elevations, all over the State except in the extreme southwestern corner. In 
most localities where it occurs it is very abundant and one of the most characteristic 
plants. It is especially prominent upon overstocked ranges and spreads rapidly 
where overstocking takes place, This and the other species are known variously as 
“yellow weed,”’ “ brownweed,’’ “‘sheepweed,’’ ‘‘snakeweed,’’ and “yerba de vibora.”’ 
The type of Gutierreza linearis came from Gray (Harle 474), and that of @. goldmanti 
from the Florida Mountains (Goldman in 1908). 
16. HETEROTHECA (Cass. 
Annual or biennial herb, glandular and hirsute, the leaves alternate, oblong or 
oblong-ovate, serrate, those of the stem clasping; involucre 7 to 8mm. high, the bracts 
linear-lanceolate to linear, acuminate; rays yellow; achenes flattened, those of the 
rays without pappus, those of the disk with pappus in 2 series, the inner of numerous 
long slender tawny bristles, the outer of very short ones. 
1. Heterotheca subaxillaris (Lam.) Britt. & Rusby, Trans. N. Y. Acad. 7: 10. 
1887. 
Inula subavillaris Lam. Encycl. 8: 259, 1789. 
TYPE Loca.ity: “ Dans le Caroline, le Maryland.” 
RanGeE: Delaware and Kansas to Florida and eastern New Mexico. 
New Mexico: Nara Visa (Fisher 49), Open fields and plains, in the Upper Sonoran 
Zone. 
17. CHRYSOPSIS Nutt. 
Perennial herbs with usually numerous stems and large, solitary or corymbose heads; 
leaves entire, mostly sessile; heads many-flowered, with numerous bright yellow 
rays; involucre campanulate or hemispheric, of narrow, much imbricated bracts; 
achenes compressed, obovate; pappus in 2 series, the inner of numerous capillary 
scabrous bristles, the outer of minute short. bristles, 
KEY TO THE SPECIES, 
Heads subtended by few to many, thin, broad, leaflike bracts. 
Plants appressed-sericeous throughout..............-.----- 1. C. nitidula, 
Plants with spreading pubescence, never sericeous. 
Floral leaves ovate, acute; leaves merely scaberulous, 
very glandular; stemsslender.................-.- 2, 
Y 
ao“ 
. cryptocephala, 
