714 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
1. Verbesina longifolia A. Gray, Proc. Amer. Acad. 19: 12. 1883. 
Aciinomeris longifolia A. Gray, Pl. Wright. 2: 89. 1853. 
TyPE LocALITy: Mountains east of Santa Cruz, Sonora. 
Rance: Southwestern New Mexico, southeastern Arizona, and southward. 
New Mexico: Summit of Animas Mountains; Animas Valley; San Luis Mountains. 
2. Verbesina rothrockii Robins. & Greenm. Proc. Amer. Acad. 34: 541. 1899. 
Verbesina wrightui A. Gray, Proc. Amer. Acad. 19: 12. 1883, in part, not V. wrightii 
Griseb. 1866. 
Type Locauiry: Camp Bowie, Arizona. - 
RanGE: Southern New Mexico and Arizona and southward. 
New Mexico: Between Copper Mines and Condes Camp; Hachita. 
3. Verbesina oreophila Woot. & Standl. Contr. U. 8. Nat. Herb. 16: 190. 1913. 
Type Locatiry: Cloudcroft, Sacramento Mountains, New Mexico. Type collected 
by Wooton, August 24, 1899. 
Ranae: Known only from type locality, in the Transition Zone. 
83. POROPHYLLUM Vaill. 
Tall perennial, about 1 meter high, woody at the base, with numerous erect, slender, 
nearly naked, glaucous branches; leaves linear; heads small, long-pedunculate, of yel- 
low flowers; bracts 5 to 10, glaucous, usually gland-dotted; ray flowers none; disk 
flowers few; achenes linear, the pappus of simple scabrous bristles. 
1. Porophyllum scoparium A. Gray, Pl. Wright. 1: 119. 1852. 
Type Loca.iry: ‘‘ Rocky banks of the San Pedro River, and mountains east of El 
Paso,’’ Texas. 
RANGE: Western Texas to southern New Mexico and southward. 
New Mexico: Arroyo near Bishops Cap; Upper Corner Monument. Dry hills, in 
the Lower Sonoran Zone. 
84. CHRYSACTINIA A. Gray. 
Low woody perennial, 30 cm. high or less, branched, with alternate glandular-punc- 
tate linear leaves and slender-pedunculate heads terminating the branches; involucral 
bracts lanceolate, in a single series, each bearing an apical oil gland; rays bright yel- 
low; achenes linear, the simple pappus of scabrous bristles. 
1. Chrysactinia mexicana A. Gray, Mem. Amer. Acad. n. ser. 4: 93. 1849. 
Pectis taxifolia Greene, Leaflets 1: 148. 1905. 
Tyre Locauiry: ‘‘Dry valley west of Saltillo, * * * and on high grounds 
near Buena Vista,’’ Mexico. 
RANGE: Western Texas and southern New Mexico to Mexico. 
New Mexico: Grant County; San Andreas Mountains; Queen. Dry hills, in the 
Upper Sonoran Zone. 
The type of Pectis taxifolia is Metcalfe’s 1440 from the Black Range. 
85. PECTIS L. Limoncixo. 
Low annuals with erect or prostrate stems, gland-dotted, strong-scented, opposite, 
narrow, often ciliate leaves and small cymose or solitary heads of yellow flowers; rays 
yellow; involucre cylindric to campanulate, the narrow distinct bracts in a single 
series; receptacle naked; achenes linear, striate; pappus of several or numerous scales, 
awns, or bristles. 
KEY TO THE SPECIES. 
Stems prostrate; leaves oblanceolate to linear-spatulate.........- 1. P. prostrata. 
Stems erect; leaves narrowly linear. , 
Pappus of numerous barbellate bristles.................------ 2. P. papposa. 
