[Vol. 8 
226 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
usually unbranched; stems numerous, erect or decumbent, un- 
» branched, 1-4.5 dm. long; terminal 
| bud remaining undeveloped; radi- 
cal leaves 3-10 cm. long, blade 
obovateto very narrowly oblanceo- 
late, entire, repand or with a few 
conspicuous teeth, acute or obtuse, 
tapering gradually to along slender 
petiole; cauline leaves narrowly 
oblanceolate to linear, 1-5 cm. long, 
entire or very shallowly toothed; 
petals narrowly spatulate, 6-9 mm. 
long; filaments linear; fruiting i in- 
icels6-15 
mm. long, usually horizontal, 
straight or sigmoid, the lowermost 
Fig. 34. L. ipei Habitsketch frequently recurved; pods erect, 
X 1$. Trichomes x 25. horizontal or rarely pendent, sessile, 
rather sparsely stellate-pubescent, globose or slightly elongated, 
not compressed, 3-4 mm. in diameter; styles slender, equalling or 
longer than the pods; septum nerved, areolae somewhat tortuous; 
ovules 2-4 in each cell, funiculi attached to the septum for about 
one-half their lengths; seeds not margined. 
Distribution: southern British Columbia, central Washing- 
ton, and northern Oregon. 
Specimens examined: 
British Columbia: Lake Osoyoos, June 7, 1905, Macoun 
70858 (Mo. Bot. Gard. Herb.). 
Washington: Conconully, eastern Washington, June, 1902, 
Griffiths & Cotton 312 (U. S. Nat. Herb.); without definite lo- 
cality, 1889, Vasey 186 (U. S. Nat. Herb.); upper Columbia, 
Wilkes 857 (U. S. Nat. Herb.); gravelly hillside north of Wenat- 
chee River, May 14, 1899, Whited 1065 (U. S. Nat. Herb.); 
rocky bar of Columbia at Wenatchee, June 2, 1899, Whited 1119 
(U. S. Nat. Herb.); near Wenatchee, May 24, 1900, Whited 
1247 (U. S. Nat. Herb.); rocky bar of Columbia River, Wenat- 
chee, May 14, 1905, Whited 2606 (U. S. Nat. Herb.) ; Rock Island, 
Kittatas County, July 10, 1893, Sandberg & Leiberg 426 (U. S. 
