202 PITTONIA. 
Basin in central Montana. It is the most notably leafy of 
all our species, and the foliage readily suggests that of the 
common celandine. Its pods are very narrow, and only an 
inch long. Bythis and the leaf characters, as well as the 
upright habit and long racemes, it must be regarded distinct 
from the almost strictly Californian C. Breweri to which the 
specimens have been referred. 
"CARDAMINE ORBICULARIS. Perennial, with copious rather 
fine fibrous roots from about the summit of a short perpen- 
dicular rootstock: stem strietly erect, 1 to 11 feet high, 
very thick, apparently somewhat fleshy, only very sparsely 
leafy, the foliage chiefly near the base: terminal leaflet an 
ineh broad more or less, orbicular, the rounded basal lobes 
overlapping, thus completely closing the sinus, entire or 
slightly repand, retuse ; the single lateral pair one-third as 
large, round-reniform, subsessile ; the few leaves of the upper 
stem with more elongated and somewhat irregularly toothed 
leaflets: racemes several, short, narrow: pods suberect, 
# inch long, obtusish, the stigma nearly sessile. 
In swamps at the mouth of the Columbia River, Oregon, 
May, 1887, Thomas Howell; the specimens labelled C. 
Breweri, but the plant of very different root-growth and 
peculiar orbicular and subreniform leaflets, with also charac- 
teristic beakless pods. 
^CARDAMINE HEDERJEFOLIA. Stems several from a short 
branching and somewhat tuberiferous rhizome, stout, erect 
from a decumbent base, a foot high more or less, not leafy 
at base, only sparsely so above and the leaves comparatively 
small, rather fleshy, simple or trifoliolate, the terminal 
(often the only) leaflet about an inch wide and $ inch long, 
more or less angularly 5-lobed but not deeply so, the lat- 
eral pair when present small and about 3-lobed: flowers 
