ROSA PRATINCOLA 
arid and subsaline half-desert country, a region of cactaceous and salicorniaceous 
plants, probably about as different from the region of R. pratincola as Arabia is 
from England ; a consideration which does not seem to have entered the minds of 
our American rhodologists — if we have any — much less those of the European 
students of the genus. 
“ R. Arkansana has not, I think, been collected a second time; and as I 
spent many a week in arduous collecting about Canon City, in different years 
between 1873 and 1896, without having seen original R. Arkansana , I entertain 
a suspicion that it may have been founded on some corymbose-flowering precocious 
shoot from the root of the so-called R. blanda of that region, or perhaps of 
R. Fendleri. But, apart from the antecedent improbability of this our eastern prairie 
species being also an inhabitant of a cactus desert, the western and xerophilous 
Rose, the real R. Arkansana , is glabrous, while ours is pubescent ; it has stipules 
both glandular and prickly, while ours has them softly pubescent only ; it has 
sepals reflexed in fruit, while in ours these are erect.” 
316 
