STANDLEY—-ALLIONIACEAE OF THE UNITED STATES. 319 
Npecimens eramined: 
NEVADA: Hot Spring Butte, Humboldt County, Watson, type collection ; 
Hawthorn, 1882, Jones 4039; Goldfield, Shockley 149; Pyramid Lake, 
1906, Frandsen & Brown; Wadsworth, 1897, #. H. Hillman; Pyramid 
Lake, 1905, Kennedy 1016: Wadsworth, 1897, Jones, 
CALIFORNIA: Deep Spring Valley, 1898, Purpws 5822; near Bishop, 1906, 
Heller 8346. 
OREGON: Alvord Desert, 1896, Leiberg 2428; Alvord Desert, 1901, Cusick 
2d. 
ISXPLANATION OF PLATE XNNNVIL See under preceding species, 
23. Abronia arizonica Standley, sp. nov. PLATE XXNXVII, Figure 1. 
Annual; prostrate or ascending: stems stout, almost glabrous, except at the 
nodes, there sparingly pubescent; leaf blades deltoid-ovate, semicordate or 
truncate at the base, narrowed above to the obtuse apex, glabrous, or minutely 
and sparingly puberulent on the lower surface; petioles as long as the blades or 
those of the upper leaves shorter; peduncles about 4 cm. long, almost glabrous ; 
bracts 10 to 12 mm. long and 2 to 2.5 mm. wide, lanceolate, acute, sparingly 
puberulent; flowers about 12 in each head, 15 mm, long, red; fruit 8 mm, 
long and 9 mm. wide, with several thin wings, these considerably narrowed 
below and sloping slightly above from the beak, not rising above it; outer fruits 
irregular, with wings very narrow or wanting, sometimes biturbinate. 
From A. torrceyi, to which this is most closely related, it may be separated 
by its larger bracts, broader and more glabrous leaves, almost glabrous stem, 
and wings without disks above; from A. lobatifolia it is distinguished by its 
different leaves, more glabrous stem, and larger bracts. 
Type U. S. National Herbarium no. 238094, collected in Arizona by Vasey, 
October, 1882. 
EXPLANATION OF PLATE XNXVII.—Fig. 1, a, plant of Abronia avrizonica; b, fruit of 
same. Fig. 2, a, plant of A. lobatifolia; b, fruit of same, Tigs. 1 and 2, a, seale 3; b, 
scale 2, ‘ 
24. Abronia lobatifolia Standley, sp. nov. PLATE XXXVII, Figure 2, 
Annual; prostrate; stems branched, puberulent throughout but not viscid, 
stout; leaf blades puberulent, irregularly ovate, truncate or rounded at the base, 
acutish above, mostly with two rounded lobes, one on each side a little above 
the middle of the blade; petioles almost as long as the blades; peduncles short, 
2 or 83 em. long; bracts linear, 10 to 18 mm. long and 1.5 mm. wide, attenuate, 
ciliolate-margined, puberulent; flowers numerous, about 15 mm, long, red; 
fruit very light-colored, 7 mm. long and 5 or 6 mim. wide, with 4 or 5 double 
but very thin wings, these much narrowed below and rounded above to the 
beak, but not rising above it, scarcely veined, hispidulous above. 
Differing from A. turbinata in habit, shape of leaves, color of flowers, and 
form of fruit; from A. torreyi in its lobed leaves and narrower bracts, and in 
the wings of the fruit, which are mostly without disks above, and are less 
veined and thinner. Type U. S. National Herbarium no, 23098, collected in 
Arizona in 1869 by Palmer. 
This was designated by Doctor Heimer] in’ herbariunr as a variety of Jt. 
tur inata under the name here taken up. 
EXPLANATION OF PLATE.-See under preceding species. 
25, Abronia torreyi Standley, sp. nov. PLATE XXNXVITI. 
Annual; stems prostrate, lO to 50 cm. long, rather stout, covered with a fine 
close pubescence; internodes short, 4 or 5 cm. long, the joints swollen; leaf 
