OF ARTS AND SCIENCES. 377 



dense persistent white stellate pubescence : leaves ovate-oblong or 

 oblanceolate, attenuate to a slender or short petiole, acutisli : llowers 

 clustered, white. — On the banks of the Colorado, near Chinwiey Peak 

 (Dr. Newberry) and at Yuma (C. G. Pringle), and in the Mohave 

 Desert (S. B. & W. F. Parish). Differing from 0. lanuginosa, Nutt. 

 (to which Newberry's specimen is referred in Ives' Report and in 

 the Botany of California), in its less prostrate habit, denser and more 

 persistent pubescence, narrower leaves more attenuate at base, and 

 rather smaller and paler flowers. 



Atriplex orbicularis. Monoecious, perennial and somewhat 

 woody at base, 3 to 4 feet high, subcanescent with very fine pubes- 

 cence : leaves alternate, oblong-obovate, an inch long or more, retuse 

 or obtuse and apiculate, attenuate to a very short slender petiole : in- 

 florescence paniculate, naked or leafy below, the small dense staminate 

 clusters with the pistillate flowers and in slender terminal moniliform 

 spikes; pistillate flowers in sessile clusters: fruiting bracts herbaceous, 

 thin, orbicular and compressed, somewhat coherent toward the base, 

 entire, not appendaged on the back, 2 or 3 lines in diameter : ovary 

 sessile ; styles included : seed | line broad : radicle superior. — At 

 Santa Monica, California, on the sea-shore at the base of the bluffs ; 

 S. B. & W. F. Parish, October, 1881. A strongly marked species, 

 much resembling A. hortensis, from which it is separated especially 

 by the dense heads of larger male flowers, the sessile ovary, and supe- 

 rior radicle. 



Atriplex Parishii. Monoecious, annual (?), prostrate, diff'usely 

 branched and leafy throughout, the slender stems woolly-pubescent, 

 6 to 10 inches long: leaves alternate, farinose, small (2 lines long or 

 less), sessile, ovate, acutish : pistillate and staminate flowers together, 

 usually a pair of each in each axil ; calyx 4-parted ; bracts triangular- 

 hastate, becoming l-J- lines long in fruit and somewhat rigid, the 

 toothed lobes and acutish apex herbaceous : styles long and exserted : 

 seed black, -J- line broad : radicle superior. — Costa Station, Los 

 Angeles County, California, in alkaline soil ; S. B. & W. F. Parish, 

 October, 1881. Of the A. patula group. 



Atriplex fasciculata. Monoecious, annual, branching from 

 the base, scurfy -pubescent throughout, the ascending leafy stems 6 

 inches high or less : leaves alternate, oblanceolate, sessile, entire, ob- 

 tuse or acutish, 3 to 5 lines long: flowers fascicled in all the axils, the 

 staminate very small and mingled with the pistillate ; fruiting bracts 

 orbicular, compressed and coherent, very nearly sessile and often 

 deflexed, nearly 1^ lines broad, not appendaged upon the back, the 



