STUDIES IN THE CRUCIFERA.—IV. 309 
inches high, the peduncles seldom 2 inches: leaves all nar- 
rowly linear, erect, an inch long, entire, silvery-stellate- 
lepidote, this indument more definitely stellate on the 
pedicels and small ovate pods: styles rather longer than 
the pods. 
Summit of Mt. Bross, Middle Park, Colorado, 29 July, 
1876, H. N. Patterson; the specimens distributed under the 
name Vesicaria alpina, from which the species differs essen- 
tially in its mode of growth by strong lignescent subterra- 
nean caudex and its invariably long narrow foliage. In 
true L. alpina there is no such underground growth, and 
the lowest leaves are oblanceolate, or even broader. Itisa 
species of the Montana region, nowhere, I think, approach- 
ing even the borders of Colorado. 
L. DIVERSIFOLIA. Small and rather slender perennial, 
caudex simple or with 2 or 3 short branches: tufted leaves 
small, all on rather slender petioles longer than the blade, 
this from round-ovate to ovate-hastate, rhombic-ovate and 
ovate-lanceolate, seldom 3 inch long, both faces canescently 
lepidote: racemose peduncles 2 to 4 inches long, decum- 
bent or assurgent, floriferous at summit, below it conspicu- 
ously leafy-bracted, the bracts oblanceolate: calyx and 
ovaries lepidote; pods not seen. 
An exceedingly well marked species, as to habit, foliage, 
ete., distributed by Mr. Cusick (n. 2,304 of my set), from an 
altitude of 7,000 feet in the Wallowa Mts., eastern Oregon, 
5 Aug., 1899. 
L. Noposa. Caudex mostly simple, elongated and with 
short fusiform nodes marking the growths of successive 
years; herbage silvery-lepidote even to the pods: leaves 
oblanceolate, acute, entire, of firm texture, $ to 13 inches 
