146 PITTONIA. 
linear or oblong entire lobes, those subtending the peduncles 
sessile and of only 3 to 5 linear lobes, all the foliage green 
and with only some scattered and inconspicuous soft white 
hairs, or the petioles more obviously villous: sepals ovate, 
obtuse, villous, merely spreading, purplish-brown at summit 
and the inner ones adorned with a distinct yellow petaloid 
margin : petals 5, broadly obovate, very obtuse, 4 or 5 lines 
long: fruit not known. 
At Fort Selkirk on the Yukon River, in dry gravelly soil, 
9 June, 1899, M. W. Gorman. A distinct and very elegant 
species of the group to which R. pedatifidus and R. cardi- 
ophyllus belong; the plants small and slender, the few 
flowers comparatively large and showy. 
New or NorEewoRTHYv Species. —X XVII. 
CYRTORHYNCHA NEGLECTA. Plant larger than in the 
type-species, often more than a foot high, more delicately 
herbaceous and the roots fewer and less wiry : leaves more 
ample and with fewer larger divisions: flowers far less nu- 
merous and the inflorescence less corymbose: petals none: 
stamens very few, commonly 10, forming a single series: 
head of achenes hemispherical rather than broadly turbinate 
as in the type: achene shorter and thicker, thickest below 
the middle and even with a conspicuous dorsal gibbosity 
just above the insertion. 
Occasional in dry ravines about Golden and Morrison, in 
middle Colorado, at about 6,000 feet altitude, flowering late 
in May. This is the first Cyrtorhyncha that was seen by me 
in my long course of field-study of Rocky Mountain botany. 
I obtained it first in 1871, in ravines about Golden City, 
and was then informed by Dr. Asa Gray that it was the 
plant of Nuttall. In 1872, when I first visited southern 
Wyoming, I saw and collected there another so very differ- 
ent from the Colorado plant that I supposed I had now a 
