266 Contributions to Western Botany. [ZOE 
“leaves oblanceolate, contracted into a broad margined petiole, 
usually finely denticulate but sometimes coarsely dentate, obtuse, 
lower stem leaves oblong-lanceolate and denticulate at apex, 
auricled, upper stem leaves lanceolate and the uppermost ovate, 
acute, broadly auricled, reduced; racemes one to two feet long, 
close, wand-like; pedicels five to eight lines long, ascending, rarely 
horizontal in fruit, slender in flower; sepals narrow, two to three 
lines long, obtuse; petals white or tinged with purple, four to 
five lines long, oblanceolate to oblong-obovate; anthers curved 
and always partly or wholly exserted; flowers usually one-half 
as long as pedicels; pods one-half a line wide, three inches long, 
generally spreading at an angle of 45°, occasionally bent in an 
arc downwards, but no specimens with pods all arched, pedicels 
never reflexed; stipe a mere rudiment; beak one to three lines 
long. This is a close congener to 7: ambiguum, but pods stipe- 
less, beaked, lower stems always pubescent, flowers much 
smaller and nearly white, and pedicels longer. A form from 
Green River Utah, that I refer to this species is simple stemmed 
and with appressed pods. 
Westwater, Colorado, May 7, 1891, also adjoining Utah. 
Common on the adobe plains of the desert. 
_ Caulanthus crassicaulis, Watson var. glaber, n. var. glabrous 
throughout. Otherwise exactly as in the species. Type from 
Summit near Sink Valley, S. Utah at 7000 feet altitude June 23, 
1890. During the present year I have seen this occasionally in| 
eastern Nevada along with the species. It is quite striking but 
passes into the type. 
Lepidium montanum, Nutt. var. alyssotdes (Gray Pl. Fend. 
10). It is so manifest that this is only a more enduring form of 
L. montanum that it is useless to keep it up as a species longer. 
It passes by insensible gradations into the type. 
Lepidium Utahense, Jones in Herb. ‘This is the plant which | 
Watson wrongly referred to Z. montanum as a form of his var. 
_ heterophyllum. It was first published by me in my lists of the 
Flora of Utah collected in 1880 and published early in 1881 but 
_ Without a description. In the thirteen years which have elapsed — 
since, I have never seen anything to change my original opinion, 
