OF ARTS AND SCIENCES. 289 
The leaflets are somewhat larger, rarely with a slight minute puberu- 
lence beneath.h— T. Frnpier1, Gray, of the Rocky Mountains 
(Colorado and Utah to New Mexico), is a rather low slender species, 
glabrous or somewhat pubescent, with usually small leaflets (2 to 9 
lines long) and an open spreading panicle ; anthers setosely acuminate ; 
fruit slightly glandular-puberulent, oblong to ovate, acuminate, 2 or 3 
lines long; seed broader and somewhat flattened, 1} lines long. 
T. Wrightti appears to be a form with fruit smaller than usual. 
RANUNCULUS AMBIGENS. In wet places, glabrous, the ascending 
stems stout and elongated, often rooting at the lower joints: leaves 
oblong- to linear-lanceolate, 2 to 5 inches long, acute, sparingly den- 
ticulate, petiolate; petiole margined, clasping: petals (2 lines long) 
but little exceeding the sepals: carpels in small ovate heads, turgid, 
rarely a line long, with a long straight narrowly subulate beak. — 
R. alismefolius, Benth. Pl. Hartw. 295, as to the eastern plant, and 
Gray, Manual, 41. From Maine to Illinois. — R. aLismaro.ivus, 
Geyer, to which this has been referred, has an erect stem (a foot high 
or more, the alpine form often dwarf) from a fleshy-fibrous root, 
glabrous excepting the hairy basal sheaths; leaves entire, the radical 
on elongated petioles, the few cauline sessile or nearly so; petals 
larger (2 to 6 lines long) ; fruiting heads usually larger, the more 
flattened carpels over a line long, with a short narrow beak. It is 
found in the mountains from Colorado and Wyoming to California 
and Oregon. The var. montanus of King’s Rep. is the typical subal- 
pine form as found by Geyer. 
DenTARIA CALIFORNICA. Stem simple or branched, about six 
inches high: leaves thick, 2 to 4 on the upper part of the stem, on 
short petioles, ovate to round-reniform, cordate or sometimes cuneate 
at base, obscurely sinuate-dentate or coarsely and sharply or lacini- 
ately toothed, very rarely 3-lobed: petals rose-colored, 4 to 6 lines 
long, more than twice longer than the purplish sepals: pedicels 
spreading (3 to 9 lines long): pod 12 to 18 lines long by a line wide, 
attenuate into a very slender style (2 lines long or more), — or in Var. 
PACHYSTIGMA, the pod much stouter and broader, with a very short 
stout style. — Mountains of Plumas County, California; J. G. Lemmon, 
Mrs. R. M. Austin, and Mrs. M. E. P. Ames. The root is a small 
deep-seated tuber. Referred to in the Botany of California under 
Cardamine paucisecta. 
DraBA MONTANA. Annual, hoary throughout with a rather dense 
villous pubescence: stem stout, simple or branched, leafy, 3 to 10 
inches high: leaves rosulate at base, lanceolate, obtusish, entire or 
VOL. XIV. (N. 8. VI.) 19 
