!o 5 — ROSA PRATINCOLA Greene 
Rosa pratincola : caule brevi, viridi ; aculeis purpureis, plurimis gracilibus 
debilibusque, rectis, patulis vel modice deflexis ; foliis magnis ; foliolis 7-1 1, obovatis 
vel oblongo-obovatis, acute serratis, cuspidato-acutis, primo utrinque pubescentibus, 
denique facie glabris ; stipulis angustissimis, integris, pubescentibus, baud glan- 
dulosis nec aciculatis ; rhachi saepe setoso-aciculata ; floribus in paniculum corym- 
bosum dispositis ; calycis tubo glabro, lobis lanosissimis, apicibus utrinque villosis, 
basi dorso glanduloso-hispida. 
R. pratincola Greene, Pittonia , vol. iv. p. 13 (1899). — Robinson Sc Fernald 
in Gray’s New Man . Bot. ed. 7, p. 495 (1908). 
“Almost herbaceous, and never more than suffrutescent, 1 01*2 feet high, 
usually flowering terminally and corymbosely from upright shoots of the season ; 
bark of the stem green and glaucescent, the prickles dark purplish, all rather slender 
and weak, but some larger and less slender than others, all straight, spreading or 
slightly deflexed ; leaves very ample for the plant; leaflets 7 to 11, obovate and 
oblong-obovate, sharply serrate, somewhat cuspidately acute, pubescent on both 
faces when young, the upper face glabrate in age ; stipules very narrow and entire, 
soft-pubescent, but neither glandular nor prickly, the rachis often setose-prickly ; 
receptacle smooth and glabrous, the sepals very woolly within and also marginally, 
the tips villous on both sides, the back of the basal part glandular-hispid ; achenes 
nearly smooth, but more or less hirsute on certain of the angles and about the base 
or summit.” 
The above is the description of Rosa pratincola given by its 
author, Mr. E. L. Greene, who continues : 
“ I thus designate unhesitatingly as a new species one of the commonest of 
North American roses, and one most abundantly inhabiting a very extensive range 
in the United States and Canada; a denizen of the prairie regions of the West 
and North-west, from Illinois and Missouri to the Dakotas and Manitoba. It has 
passed for R. A rkansana , and to that extent that probably almost all the so-called 
R. A rkansana of the herbaria of the country is of this species. It is found in eastern 
Kansas and Nebraska, but does not occur in Colorado or anywhere very near 
its borders, in so far as w T e can ascertain. It is the peculiar rose of the rich 
grassy prairies of the upper Mississippi Valley; and, though passing usually for 
R. A rkansana, has been distributed by Sandberg, from Minnesota, as R. humilis. 
It is, of course, a part of R. blanda of the earlier American authors, and of local 
botanists residing in the prairie regions. 
“ Probably no botanist knowdng, as I know, both the Illinois and Wisconsin 
prairies, and the valley of the Arkansas in Colorado, could be brought to entertain 
the notion that any species of rose could be common to the two. The latter is an 
315 VOL. 11. — L 
