SEGREGATES FROM SIEVERSIA. EUI 
E. FLAVULA. Size of the last, more slender, the foliage 
rather small, more dissected but open, not of crowded leaflets, 
their pubescence scanty and none of it long-pilose: flowers 3, 
on pedicels both short and slender; calyx with very short low- 
hemispheric tube, short deltoid or deltoid-ovate segments barely 
purpled-veined like the petals and yellowish ; bractlets small, 
shorter than the segments, and the whole calyx quite surpassed 
by the broad obtuse obovate petals: plume short, 1} inches long» 
not red. 
Wind River Mountains, Wyoming, Nelson’s 829 as in my 
herbarium the type for flowers; W. H. Forwood’s, of July, 1882, 
as in U.S. Herb., for fruit. 
E. DISSECTA. Large and with large foliage, distinguished 
from all the foregoing by light green herbage and more finely 
dissected foliage, the leaflets from broad-cuneiform to narrow 
rhombic in outline, all deeply, the larger somewhat pinnately 
cleft into oblong lobes, both faces almost glabrous except at or 
very near the margin, there sparsely long-pilose: flowers mostly 
3, neither the linear bractlets nor triangular-lanceolate calyx- 
Segments any more than equalling the yellow petals: mature 
fruit not seen. 
Mountains of Central Colorado, about the sources of the 
Platte and the Arkansas rivers, therefore on the Atlantic slope 
of the continent. Superficially most resembling Æ. ciliata of 
the far northwestern Pacific slope, yet with fair characters. The 
best specimens are by Crandall and Cowen from near Como, and 
from Michigan Creek, n. 624 by an unknown collector, 5 Aug., 
1899, both these as in U. S. Herb. 
E. CILIATA. Geum ciliatum, Pursh. This is an aggregate 
which I fail to resolve into its specific elements by any certain 
characters. The plants all have a foliage much dissected and 
more or less strongly though loosely pilose, the margin more or 
less apparently ciliate. Nothing is more easy than to distinguish 
these plants as a group, from the eastern Æ. trifora ; but this 
has a range of its own and comparatively restricted. This one 
LEAFLETS, Vol. i. pp. 177-184. Jan. 30, 1906. 
