28 BOTANY. 



lower stem and leaves pilose with scattered hairs, more or less glabrous 

 above ; calyx slightly pilose, 4" long ; immature siliques 3-4' long, i" wide. 

 Very near C. procerus, but readily distinguished by its obtuse siliques. On 

 dry foot-hills in the Truckee Valley, and near Humboldt Lake, Nevada ; 

 May. (113.) 



Caulanthus hastatus. Perennial, glabrous, simple or somewhat 

 branched ; leaves petioled, very variable ; radical ones lyrate or entire, the 

 terminal leaflet ovate, acute, hastate, or truncate at base ; cauline leaves 

 ovate-oblong, entire, hastate, rounded or cuneate at base ; flowers greenish- 

 yellow, in a loose virgate raceme, reflexed ; sepals narrow-lanceolate, distant; 

 petals (sometimes nearly wanting) equaling the sepals, sublaciniately toothed 

 laterally; sihques linear, subterete, obtuse, spreading; seeds flattened, slightly 

 margined or immarginate ; cotyledons nearly accumbent. — A stout, somewhat 

 glaucous plant, 3-5° high, with large heteromorphous, but often hastate 

 leaves, which when lyrate have the few small lateral leaflets distinct along the 

 narrow rachis. On shaded slopes in the Wahsatch and Uinta Mountains; 

 6-7,000 feet altitude ; June-August. Plate III. Fig. 1. A flowering plant, 

 one-half the natural size. Fig. 2. A flower. Fig. 3. A petal ; both enlarged 

 four diameters. Fig. 4. A pod, of natural size but shorter than the average. 

 Fig. 5 and 6. A seed, in position, and its embryo ; enlarged four diameters. 

 (114.) 



Beassica (sinapis) nigra, Benth. & Hook. Near a deserted "city" in 

 the West Humboldt Mountains ; doubtless introduced. (115.) 



Beassica (sinapis) campesteis, L. Found growing among sage-brush 

 in several localities in Nevada, but at no great distance from the Overland 

 Stage-road, and doubtless introduced. (116.) 



Capsella Buksa-pastoeis, Moench. Frequent among sage-brush near 

 Camp Douglas, Utah. Introduced. (117.) 



Capsella divaeicata, Walpers. {Hijmenolobus, Nutt.) Erect or sub- 

 decumbent, branched ; leaves ovate and entire, or pinnatifid with several oblong 

 lobes; upper leaves linear and often entire ; silicle elliptic-oblong, obtuse.— A 

 small slender-branching glabrous annual, 2-6' high. In numerous specimens 

 from half-a-dozen localities, it is rarely that a pinnatifid leaf is found; the radi- 

 cal leaves are more usually ovate, on petioles equaling or exceeding the blade ; 

 occasionally sinuate dentate or pinnately lobed. Collected by Nuttall on the 

 Columbia, by Parry in Southern California, and by Anderson near Carson 



