12 PITTONIA. 
Colleeted by Messrs. Baker, Earle and Tracy, on dry hill- 
sides at about 10,000 feet altitude in West Mancos Cafion, 
southern Colorado, July, 1898, and distributed for R. Arkan- : 
sana. The name assigned this excellent new rose is taken 
from the geographical name Mancos, which is Spanish and 
also Latin for * the cripples.” 
R. suFFULTA. Stems low, simple, corymbosely floriferous 
at the summit, the bark green and glaucescent, rather densely 
armed with comparatively short straight spreading or as- 
cending prickles: leaflets about 9, obovate, acute, serrate, 
finely pubescent on both faces but most so beneath, the 
rachis short-prickly and with a few short-stalked glands: 
stipules well developed, sparsely glandular on the margin, 
their auricles with entire inner margin, the outer strongly 
and evenly glandular-serrate: receptacle smooth and gla- 
brous ; sepals with woolly-ciliate margins, the back bearing 
scattered subsessile glands, their folizceous tips small and 
entire: fruit not seen. 
Of this southern Rocky Mountain rose I have seen but 
one specimen, and that was communicated to mesome years 
since by the late Dr. Geo. Vasey, from the meadows of the 
Rio Grande at Las Vegas, New Mexico. It was labelled 
“R. blanda var. setigera, Crepin," which is now taken by 
Crepin for R. Arkansana. 
The name R. suffulta is suggested by a circumstance which 
I have not mentioned in my diagnosis, because I fear it may 
be accidental or occasional; though it may possibly prove 
to be a real character. Between the two auricles of the stip- 
ules there arises a leaflet, or a pair of them, well developed 
and conspicuous, though of only one-fifth or one-fourth the 
size of the proper leaflets; and these are not like the ordinary 
leaflets, in that they hold an upright rather than a pinnate- 
spreading posture. They are parallel to the lobes or auricles 
of the stipule, not at right angles with them as the true 
leaflets are. 
