20 LEAFLETS. 
from a stout ascending rootstock: basal leaves elliptical to ellip- 
tic-oblong and oblong-linear, subcoriaceous, ? to 1? inches long, 
on slender petioles not so long, glabrous above, pale and hairy 
beneath, the thick margins revolute; cauline leaves mostly 1 or 
2 only, as long as the others but linear, very erect : spikes 1 to 
14 inches long, linear, dense, bulbilliferous to the middle: 
bracts broadly ovate, entire, tapering to a short but conspicu- 
ous acumination. 
An inland species of Alaska, the specimens from Ranch Creek 
in the Yukon Valley, 26 June, 1899, by M. W. Gorman, and 
distributed for Polygonum viviparum. 
B. LEPTOPHYLLA. Subterranean parts not seen: upright 
stems 2 feet high: basal leaves 8 to 12 inches long, only 2 inch 
broad, linear, tapering to a very short petiole, acutish, glabrous 
on both faces traversed underneath by a broad flat midvein and 
delicately reticulate-venulose, the margins thin and somewhat 
crisped ; not in the least revolute ` ocrew an inch long, termina- 
ting in an oblique red-brown scarious appendage and a small 
leaf, this lance-linear to oblong-linear: spike 1 to 2 inches long, 
oblong to cylindric: bracts ovate or ovate-lanceolate, but with 
an almost aristiform acumination from the truncate or even 
emarginate upper end : flowers white. 
Frequent in the higher Sierra of California, here described 
from specimens collected forty years ago by Bolander. The 
leaves are remarkably like those of Rumex crispus though nar- 
rower. 
B. SCOPULINA. Stout and low, the several stems 3 to5 inches 
high from a more or less rounded and compacted mass of short 
rootstocks, the whole much like a tuberous root in appearance ; 
leaves all erect, elliptical to oblong-linear, ? to 2 inches long, 
firm if not subcoriaceous, bright green and glabrous above, pale 
and minutely rough-hairy beneath, the midvein neither broad 
nor flattened, traversed by a raised line in the middle, veinlets 
obsolete except at the very margin, there abruptly prominent : 
spikes commonly 2 or even 3 inches long and longer than the 
stem itself, bulbilliferous for more than half their length, the 
floriferous portion thick and dense: bracts suborbicular, entire, 
cuspidate-pointed. 
This is of the mountains of northern and middle Colorado, 
