ROBINSON & GREENMAN : CONTRIB. GRAY HERBARIUM. 93 
Chihuahua, Hartman, no. 777; vicinity of Durango, Palmer, no. 
754; Chiapas, Ghiesbreght, no. 63. Types in herb. Gray. 
9. G. annua. “Annual, slender, often branched from the base, 
3 to 5 dm. high, copiously branched above : leaves linear or nearly 
so, finely appressed-pubescent and even somewhat canescent, 
slightly ciliated at the base or not at all, the cauline 4 to 7 em. 
2 to 3 mm. broad, the rameal smaller: pubescence on the 
peduncles and on the involucral bracts fine and appressed; heads 
rather small, usually 7 to 10 mm. in diameter (exclusive of rays): 
rays 10 to 14, yellow, 4 to 12 mm. long: otherwise like G@. mudti- 
Jlora. — G. multiflora, Gray, Syn. fl., 1, pt. 2, 269, in part, not 
Benth. and Hook.f. G@. multiflora, var. annua, Jones, Proc. Calif. 
acad. sci., ser. 2,5, 698. Heliomeris piper tes Gray, Pl. Fendl., 
84, as to pl. of Wislizenus; Pl. Wright., 2, 87, in part, not Nutt. — 
W. Texas, Wright, no. 334, Pope; New Mexico, on sides of moun- 
tains near the copper mines, Wright; Arizona, on sandy river bot- 
toms, near Ft. Whipple, Cowes and Palmer, no. 559; at Patano, 
Pringle; near Defiance, Marsh, no. 229; Arizona, Knowlton, no. 
283, Wilcox, no. 455, Rothrock, no. 779; Mexico, at Llanos, 
Wislizenus; in Sonora, Wright, no. 1220, F. £. Lloyd, nos. 410, 
411. Distinguished from G. multiflora by its annual root, much 
narrower leayes, somewhat smaller heads, shorter rays and dis- 
tinctly Sonoran range; from @. hispida, var. ciliata less satisfac- 
torily by the different pubescence of its leaves and involucral 
scales, 
10. G. hispida Prcbably annual, 6 to 8 dm. high, densely 
hispid and hoary throughout with long stiff white hairs, those of 
the stem and peduncles widely spreading: leaves alternate, narrow, 
linear, 5 to 7 em. long, 3 or 4 mm. broad, thickish, channeled 
above: involucral bracts considerably exceeding the disk, hirsute 
and hoary: flowers as in G@. multiflora. — Heliomeris multifiora, 
var. Atevida Gray, Pl. Wright., 2, 87, as to typical canescent form. 
— Low damp soil, near Sta. Cruz and San Bernardino, Sonora, 
Wright, no. 1220 in part. In the almost shaggy pubescence of 
the leaves and copious spreading pubescence of the peduncles this 
form differs rather markedly from the others here enumerated, but 
it certainly passes to 
var. ciliata. Slender annual, commonly branched from the 
base, 3 to 6 dm. high: stems with sparse spreading pubescence or 
nearly glabrous below: leaves linear, green, conspicuously ciliate 
