254 NORTH AMERICAN FLORA [Volume 21 
27. Abronia turbinata Torr.; S. Wats. Bot. King’s Expl. 285. 1871. 
Abronia latiuscula Greene, Leaflets 2: 105. 1910. 
Annual, much branched, the branches erect, ascending, or decumbent, 1.5-5 dm. long, 
stout, viscid-puberulent when young, glabrate in age, often tinged with purplish-red; petioles 
slender, 1-4.5 cm. long; leaf-blades orbicular to ovate-orbicular or broadly oval, 1.4-3.7 em. 
long, 1-3 cm. wide, broadly rounded or subcordate at the base and often unequal, broadly 
rounded at the apex or very obtuse, viscid-puberulent or glabrate, yellowish-green, entire, the 
blades of the uppermost leaves usually reduced and short-petiolate but not proportionally 
narrower than the lower ones; peduncles slender, 2.5-9.5 cm. long, viscid-puberulent; bracts 
lanceolate, lance-oblong, or linear-lanceolate, 5-7 mm. long, scarious, long-attenuate or very 
acute, viscid-puberulent; perianth 17-22 mm. long, viscid-villosulous or minutely viscid- 
puberulent outside, the limb 6 mm. broad, white, the tube pinkish; inner fruits of the head 
broadly turbinate, 5 mm. long and often broader, deeply lobed, the lobes compressed and 
winglike, acute, truncate above and short-villous; seed lance-oblong, 2 mm. long, dark-brown, 
lustrous. 
Type Locality: Carson and Humboldt valleys, Nevada. 
DistRisution: In sandy soil, southern Oregon, western Nevada, and eastern California. 
InLusTRations: S. Wats. Bot. King’s Expl. pl. 31; Contr. U. S. Nat. Herb. 12: pl. 36, f. 2. 
28. Abronia exalata Standley, Contr. U. S. Nat. Herb. 12: 318. 
1909. 
Abronia turbinata Coville, Contr. U. S. Nat. Herb. 4: 178. 1893. Not A. turbinata Torr. 1871. 
Annual, much branched, the branches stout, ascending or decumbent, 2-5 dm. long, 
densely viscid-puberulent or rarely glabrate, sometimes tinged with purplish-red; petioles 
slender, 1-3 cm. long; leaf-blades orbicular to ovate-orbicular or broadly oval, 1-3.5 cm. long, 
1-3.5 em. wide, subcordate or broadly rounded at the base and often very unequal, broadly 
rounded to very obtuse at the apex, entire, viscid-puberulent or glabrous, yellowish-green, 
often glaucescent beneath; peduncles 2-5 cm. long, viscid-puberulent; bracts ovate or oval, 
5-7 mm. long, obtuse or acutish, scarious, viscid-puberulent; perianth 1.2-2 em. long, viscid- 
puberulent or short-villous outside, the limb 5-6 mm. wide, white or nearly so, the tube pink- 
ish; inner fruits of the head turbinate, 3 mm. long, shallowly lobed, the lobes broad, obtuse, 
truncate above, short-villous; seed lance-oblong, 1.5 mm. long, dark-brown, lustrous. 
TypE Locatity: Near Keeler, Inyo County, California, at an altitude of 1,100 meters. 
DistrRIBurIoN: In sandy soil, western Nevada and southeastern California, 
InLustRatIon: Contr. U.S. Nat. Herb. 12: pl. 36, f. 1. 
