102 MISSOURI BOTANICAL GARDEN. 
dorf, 1881, no. 15), and Oregon ( Hail, 1871, nos. 176 and 
178 in part). —What may be a verticillate-leaved form of 
this, collected inOregon by Nuttall, occursas Z. glandulosum 
in the Gray and Torrey herbaria. — Plate 33. 
Well marked by its decurrent leaves and the peculiar 
apex of its large seeds. Suksdorf’s specimens bear well- 
developed turions, removing the species from the rosulif- 
erous group in which Professor Haussknecht placed it in 
the absence of innovations. 
28. E. Drummonpi1, Hausskn. — A span to mostly a foot 
high, glandular above, the decurrent lines subglabrate ; 
leaves 25 to 40 mm. long, typically remote and erect, 
lanceolate to almost linear-lanceolate, rather acute, the 
upper, especially, denticulate, mostly rounded to the sub- 
sessile base ; flowers erect; petals 3 to 4 mm. long, usually 
pale; capsules 30 to 50 mm. long, slender-stalked; seeds 
3 to .45 x 1.2 to 1.4 mm.— Monogr. 271.— Mountains, 
from Montana to Colorado and Nevada. — Young specimens. 
with leaves in whorls of 3, from British Columbia (Macoun, 
1875, no. 1935 in hb. Macoun. ), may belong here. — Plate 34. 
This, the more typical form of #. Drummondii, is very 
closely related to #. brevistylum, but differs in its narrower 
more toothed leaves not so pale when dry, its more finely 
and sharply papillate seeds, and in the fact that its turions 
often lengthen at base into short sobols. With more 
glandular pubescence above and still more deeply toothed 
leaves, it approaches #. Halleanum, from which it differs in 
its smaller seeds and leaves never decurrent-clasping. 
Smaller plants, with broader more divergent leaves, greatly 
obscure the limits between this and the next species. 
== = Smaller plants scarcely over a spanhigh. (Varieties of delicatum 
and ursinum might be sought here.) 
29. E. saxrmonranum, Hausskn.— Somewhat crisp-hairy 
at least along the elevated lines, and glandular above; 
leaves about 20 mm. long, mostly crowded and ascending 
