WOOTON AND STANDLEY—FLORA OF NEW MEXICO. 709 
74. WYETHIA Nutt. 
Coarse perennial herbs with mostly simple stems, alternate, usually entire leaves, 
and large heads of yellow flowers; involucre campanulate or hemispheric, the bracts 
loosely imbricated in 2 or more series, foliaceous; receptacle slightly convex, the 
chaff lanceolate, equaling and embracing the flowers; rays large, pistillate; achenes 
elongated, 4 or 5-angled, with coroniform 5 to 10-toothed or laciniate pappus. 
KEY TO THE SPECIES. 
Leaves oblong-lanceolate, tapering to both ends, soft-pubescent; 
bracts equal, in 2 or 3 series; stems not white.............-.-- 1. W. arizonica. 
Leaves linear-oblong, scabrous, not tapering at the ends; bracts very 
unequal, in 5 to 6 series; stems white..........-.-.-.-------- 2. W. scabra. 
1. Wyethia arizonica A. Gray, Proc. Amer. Acad. 8: 655. 1873. 
TypE Loca.ity: Near Bear Springs, northern Arizona. 
Rance: Colorado and Utah to Arizona and northern New Mexico. 
New Mexico: Southeast of Tierra Amarilla (Zggleston 6516). Open slopes in the 
mountains, in the Transition Zone. 
2. Wyethia scabra Hook. Lond. Journ. Bot. 6: 245. 1847. 
Type Locaury: ‘‘Clayey argillaceous declivities of the high hills of Upper Colo- 
rado River.” 
Rance: New Mexico and Colorado to Utah and Wyoming. 
New Mexico: Carrizo Mountains (Standley 7439). Dry hills among rocks, in the 
Upper Sonoran Zone. 
75. VIGUIERA H. B. K. 
Coarse perennials with chiefly opposite, petioled or sessile, mostly ovate or cordate 
leaves and large heads on long terminal peduncles; rays bright yellow, showy, 
sterile; bracts much imbricated, the outer usually foliaceous; achenes pubescent, 
quadrangular-compressed, not margined nor winged; pappus of 2 awns or palez, one 
at each of the principal angles. 
KEY TO THE SPECIES. 
Disk stongly convex at maturity; leaves thin, all petioled, rounded 
or acute at the base, pubescent; stems much branched....... 1. V. texana. 
Disk flattish; leaves thick, the upper sessile or nearly so, subcordate, 
scabrous; stems sparingly branched.......---.-------+------- 2. V. cordifolia. 
1. Viguiera texana Torr. & Gray, Fl. N. Amer. 2: 318. 1842. 
TYPE LOCALITY: Texas. 
Ran@e: Western Texas to southern Arizona. 
New Mexico: Fort Bayard; Bear Mountains; San Luis Mountains; near White 
Water; White Mountains; Van Pattens. Thickets and open fields, in the Transition 
and Upper Sonoran zones. 
2. Viguiera cordifolia A. Gray, Pl. Wright. 1: 107. 1852. 
Type LOCALITY: Plains at the base of the Guadalupe Mountains, Texas. 
RaNGE: Western Texas to southern Arizona. 
New Mexico: Mangas Springs; Mogollon Mountains; Fairview; Dog Spring; Organ 
Mountains; White Mountains: Gray; Sandia Mountains. Dry hills and canyons, in 
the Upper Sonoran Zone. 
