Flora of the Palousc Region 85 



lar or oblong, sinuate, or the lower ones sometimes reduced to the terminal 

 leaflet: petals white, 3-4 mm. long: pods linear, 12-20 mm. long, acute at 

 each end, a little longer that the spreading pedicels. Introduced. 



134. CARDAMINE. 



Mostly glabrous leafy-stemmed perennial herbs, growing in 

 moist places: leaves entire, lobed or divided, all petioled: flowers 

 white or purple: pod elongated, compressed parallel to the par- 

 tition; valves nerveless; seeds in one row, wingless. 



C. oligOSperma Nutt. Annual, erect, usually simple-stemmed, 15-30 cm. 

 high, sparsely hirsute throughout or nearly glabrous: leaflets small, orbicu- 

 lar, petiolulate, 3~5dobed or toothed: raceme few-flowered: flowers 2 mm. 

 long: pods erect, 8-20-seeded, 12-20 mm. long. Wet places, infrequent. 



135. CAPSELLA. 



Slender and mostly smooth annual herbs: radical leaves tufted: 

 flowers small, white, in racemes: pod compressed at right angles 

 to the partition, many-seeded. 



Pods notched at apex. C. bursa-pastoris. 



Pods entire. C. elliptic a. 



C bursa-pastoris Medicus. Stellate-pubescent below, glabrous above, 

 30-60 cm. tall, sparingly branched: basal leaves in a rosette, lanceolate or 

 oblanceolate, pinnately-lobed, 2-8 cm. long, petioled; cauline sagittate and 

 half-clasping at base, 2-4 cm. long, dentate or entire: flowers white, about 2 

 mm. long: pods triangular, with a broad shallow notch at the apex. A com- 

 mon weed. 



C. elliptica C. A. Meyer. Branched from the base, glabrous or sparsely- 

 pubescent, 5-15 cm. high: stems decumbent or ascending: basal leaves pin- 

 nately lobed or entire; petioles 1-2 cm. long; cauline spatulate or oblanceo- 

 late, sessile, entire or with a few lobes: petals white, about as long as the 

 sepals, 1 mm. long: pods smooth, elliptic, 3-4 mm. long, on slender pedicels. 

 Along Snake River, rare. 



136. CAMELINA. 



Erect annual herbs: leaves entire, toothed or pinuatifid: flow- 

 ers small, yellowish: style slender: pod obovoid or pear-shaped, 

 slightly flattened parallel to the partition, many-seeded. 



C. sativa Crantz. Stems erect, mostly simple, 30-90 cm. tall, hirsute be- 

 low, glabrous above: leaves lanceolate, acute, sagittate at base, half-clasping, 

 erect, entire or nearly so, stellate-pubescent: flowers pale yellow: pods obo- 

 vate, 6-8 mm. long, beaked by the persistent style, glabrous, on slender 

 pedicels. In fields at Wawawai. 



137. DRABA. 



Low annual or perennial herbs: leavesentire or toothed: flowers 

 white or yellow, mainly in racemes: pod oval to oblong or linear, 



