ete sr | 
oa 
ee ee ee ee a ee ee eee 
RYDBERG: STUDIES ON THE Rocky MountaIn.Fiora 237 
“ Lesquerella Shearis sp. nov. 
Perennial with a large rosette of basal leaves; stems several, 
ascending, 1-2 dm. high, densely stellate: basal leaves 3-4 cm. 
long ; blades broadly oval or ovate, entire or slightly angular den- 
ticulate ; stem leaves oblanceolate, about 2 cm. long, subsessile : 
racetne many-flowered ; pedicels in fruit bent S-shaped : pods erect, 
densely stellate, 7-8 mm. long, acute, compressed above ; septum 
elliptic in outline : style about as long as the pod. 
This species differs from Z. curvipes A. Nelson in the broad 
basal leaves, the elliptic instead of ovate outline of the septum and 
the longer style. It grows along creek banks at an altitude of 
about 2000 m. 
Cotorapo: Idaho Springs, 1895, C. L. Shear, 3269 (type in 
herb. N. Y. Bot. Gard.); also at the same locality, P. A. Rydberg. 
- Physaria brassicoides sp. nov. 
A tufted perennial with a large and dense rosette of basal leaves 
and a thick taproot: basal leaves large, with winged petioles ; 
blades almost orbicular in outline, sinuate-dentate, 2.5~5 cm. in 
diameter: stem leaves small and few, spatulate: flowering stems 
about 1 dm, high, ascending: flowers numerous: fruit almost 
obcordate, acute at the base, deeply divided above ; cells inflated, 
rounded pyriform, 8-10 mm. long and 5—8 mm. in diameter: style 
about 5 mm. long. 
This species resembles most P. didymocarpa in habit, but differs 
in the smaller fruit, which is not at all cordate at the base but on 
the contrary usually acute, and in the larger basal leaves which 
form a large rosette, 7-10 cm. in diameter and having some resem- 
blance toa young cabbage-head. It grows in crevices of magnesian 
Tocks in cafions and badlands. 
Nesraska ; Cafion south of Scott's Bluffs, 1891, Rydberg, 24. 
v Cardamine acuminata (Nutt.) 
Cardamine hirsuta 8 acuminata Nutt.; T. & G. Fl. N. Am. 1: 
85. 18 38. 
This species has been variously referred to C. hirsuta, C. obligo- 
Sferma, and C. Pennsylvanica. It is probably nearest related to the 
last, but the lower part of the stem is hairy and the pod has an 
fvident style over 1 mm. long. It ranges from the Mackenzie 
River to British Columbia, south to California and Wyoming. 
