10 PITTONIA. 
New WESTERN SPECIES or Rosa. 
R. MELINA. Stout and much branched, 3 or 4 feet high, 
the stem and branches red, glabrous, glaucescent, sparingly 
armed with short prickles, some stout and longer, others 
slender and smaller, but all strongly recurved: stipules 
finely glandular-serrulate, with also some subsessile glands 
extending to the rachis of the leaf, but leaflets glabrous and 
glandless, these about 7, ovate or oval, acute or obtuse 
simply and sharply serrate: peduncles of the solitary flowers 
short and stout, woody and not in the least curved or bent 
in age by the weight of the very large fruit; this broadly 
somewhat inverse-pyriform, smooth and glabrous, nearly 14 
inches in diameter: sepals smooth and glabrous except on 
the margin, this closely beset with short-stipitate glands, the 
foliaceous terminal part commonly nearly as large as the 
basal portion and perfectly glabrous, either simple or with 
a few large teeth or lobes. 
Apparently common at middle elevations in the mountains 
of Southern Colorado; the best specimens (in fruit only) 
collected by myself at Cerro Summit above Cimarron, 30 
Aug., 1896; but the species has a northwesterly extension 
apparently to Montana, and has passed for R. Nutkana with. 
some; though it is extremely different from that by its small 
glabrous foliage, short and hooked prickles, short woody 
peduncles never shrinking and curving in fruit; and the 
sepals are neither long-attenuate nor gland-bearing on the 
back as in those Northwest Coast roses which form the. 
R. Nutkana aggregate. 
R. Macoun. Low shrub of compact growth, the grow- 
ing branches and short flowering branchlets densely leafy, 
the older armed with numerous prickles of various sizes, all 
stoutish and rather deflexed than recurved: leaves wholly 
glandless, glabrous except a slight soft pubescence on the 
