22G BOTANY. 



broader, subcordate :it base, and quite membranaceous — Mount Graham, 

 Arizona, at 9,250 feel altitude (423). 



"Oxybaphus NYCTAGINEU8, Sweet, var. oblongifolius, Gray. — With 

 small flowers and leaves. Nevada."— Watson. 



Oxybaphus iiirsutus, Sweet, var.— Leaves lanceolate-linear; Btem 

 glabrous or nearly so. — Willow Spring-, Arizona, at 7,195 feet (206). 



Oxybaphus angustifolius, Sweet — Colorado (810, 811, 814), and 

 Nevada and Arizona. 



Oxybaphus coccineus, Torr. — Erect, glabrous; leaves 2-4' long-, 1-3" 

 wide; inflorescence in a loose, terminal panicle; perianth 3-flowered, tinged 

 with purple, pubescent; calyx 6-8" long, pubescent externally; stamens 

 5, exserted ; fruit with 5 corky wings, somewhat roughened. 



Allionia incarnata, L. — (324), Ash Creek, Arizona. 156 a, collected 

 by Loew in Arizona, and having the marginal teeth on the fruit quite gland- 

 like, and comparing well with Palmer's specimen in 1875 from St. George, 

 Utah, which I find Mr. Watson marks with a doubt. Besides this, I have 107 

 from Covero, New Mexico, in which the leaves are quite oval, obtuse, and 

 veiny beneath, and the marginal wings of the fruit developed into strong, 

 uncinate, glandular teeth, much larger than the central ones, which they 

 conceal. This may be a distinct species. My specimens are quite variable, 

 some having 4, 5, and even 6 stamens, either included or exserted. The 

 Expedition has it also from Nevada. 



ArutoNiA fragrans, Nutt. — Colorado (808, 812, 813), and New Mexico 

 (127), where, in the evening, it was the most fragrant of flowers. 



Abronia turbinata, Torr. — Gila Valley, Arizona (340, 765). 



Abronia villosa, Watson (American Naturalist, vii, p. 302). — "Covered 

 throughout with a more or less dense villous subglandular spreading 

 pubescence; stems weak and slender; leaves small, ^-1 inch long, oblong 

 or ovate, obtuse or acutish, attenuate into the slender petiole; heads 5-.0- 

 flowered ; involucral scales narrowly lanceolate, long-acuminate, 3-4 lines 

 long ; flowers pink, the lobes obcordate, with a deep sinus ; fruit with a 

 firm body, strongly reticulate-pitted, the 3-5 broad wings, consisting of a 

 simple lamina, usually truncate above. Nearest to A. umbellata." — (Wats< >n 

 in Wheeler's Preliminary Report, 1874, p. 15.) I have not seen the sped- 



