92 
BOTAi!rr. 
Rosa fraxinifolia, Bork. Eesembling the last; flowers large, 3' in 
diameter, and fruit also much larger, 6-8" in diameter ; rather more pubes- 
cent and glandular; 2-3° high, growing solitary on dry ridges.— The more 
usual form in Utah ; not seen in Nevada. Common from Washington Territory 
to Northern Cahfornia; Wyoming Territory, (Fremont.) (350.) 
Pyrus sambucifolia, Ch. & Schl. From the northern frontier of the 
United States to latitude 55-60° and west to the Pacific ; Cascade Mountains, 
Washington Territory; Rocky Mountains of Colorado, (Vasey.) Found in 
the East Humboldt Mountains, Nevada, (rare,) and in the Wahsatch and 
Uintas ; 7-8,000 feet altitude ; June-September. (351.) 
Crat^gus rivularis, Nutt. (?) Leaves obovate, subrhomboidal or 
lanceolate, cuneate at base and attenuate into a slender petiole, acuminate, 
unequally serrate, sometimes sHghtly lobed, slightly pubescent above with 
the petiole, at length coriaceous and shining ; corymb glabrous or somewhat 
pubescent, 6-12-flowered ; calyx-segments long-acuminate, subglandular, as 
also the slender pedicels; petals rather large, 2-3" in diameter; styles 
3-5 ; fruit large, 4-6" in diameter, dull purple with whitish dots, juicy and 
edible.— A shrub 8-12° high, with reddish branches and few short stout 
thorns. There is an uncertainty in the determination of these specimens ; 
they certainly do not agree with Nuttall's description in the characters of the 
calyx, and the leaves are rarely obtuse as in his scant specimen in Herb. 
Torrey ; nor yet do they accord with Var. Doiiglasii, T. & G., of C. sanguinea, 
Pall., (which had been before referred to both punctata and glandulosa, and 
made by Lindley a distinct species, C. Douglasii,) which has broadly ovate 
leaves, doubly serrate and usually lobed, and smaller fruit. Banks of streams, 
Oregon. Found in the Humboldt Valley at the foot of the Clover Mountains! 
Nevada, and in the Wahsatch, Utah ; 5,500 feet altitude ; flowering in May' 
fruit ripe in Se])tember. (352.) 
Amelanchier Canadensis, T. & G., Var. alnifolia, T. & G. In the 
Western States and from the Upper Missouri to Washington Territory and 
Cahfornia, Arizona and Now :V[exico. Abundant in all the liigher ranges of 
Nevada and Utah, and giving their name to the Toyabe" Mountains- 5- 
10,000 feet altitude ; in flower, May-July ; fruit ripe in August. (353.) 
