364 PROCEEDINGS OF THE AMERICAN ACADEMY 



than a line long: pod obcompressed, 5 to 10 lines broad, the narrowly 

 linear replum 3 or 4 lines long, and the flattened obtusely rounded 

 cells 1-4-seeded. — In gulches on Pine Creek, near Snake River, 

 Union County, Oregon ; W. C. Cusick, June, 1880. With the habit 

 and foliage of the other species, but with the flattened pod of Sya- 

 thlipsis, though the valves are nerveless and not carinate. 



Dkaba. chrysantha. Perennial, with leafy decumbent or erect 

 stems (2 to 6 inches high) from a branching rootstock, which becomes 

 covered with the persistent bases of dead leaves, sparingly pubescent 

 with simple hairs: basal leaves narrowly oblanceolate, 1 to 2|^ inches 

 long, entire or occasionally with 1 or 2 teeth, sparingly ciliate, the 

 cauline oblanceolate to lanceolate : raceme open, the bright yellow 

 flowers on slender pedicels 2 to 6 lines long: pod glabrous, oblong 

 (4 or 5 lines long), acute at each end and beaked by a slender style 

 ^ to 1 line long. — In the high mountains of Colorado (above Golden 

 City, at 12,500 feet altitude, Rev. E. L. Greene, 1871, and in the 

 Sawatch Range, T. S. Brandegee, 1880), and on a peak south of 

 Apache Pass, Arizona, J. G. Lemraon, 1881, 



Caulanthus amplexicaulis. Annual, glabrous and glaucous, 

 branching, suberect or lax and flexuous, 1 to 2 feet high : lower leaves 

 oblong-obovate, obtuse, auriculate and clasping, coarsely and acutely 

 toothed or sparingly denticulate or entire, 2 to 4 inches long, the upper 

 round-ovate to oblong-ovate, entire, the uppermost more acute: racemes 

 very loose : sepals 3 to 5 lines long ; petals with a narrow recurved 

 exserted limb, purple-veined : pods terete, about 3 inches long by § of 

 a line wide, spreading or ascending on pedicels 3 to 6 lines long or 

 more, with a thick bifid sessile stigma. — In the San Bernardino 

 Mountains, California ; collected in May, 1881, by S. B. & W. F. 

 Parish, and by W. G. Wright. 



Caulanthus glaucus. Glabrous and glaucous, stout, simple or 

 sparingly branched, 1 to 2^ feet high : leaves rather fleshy, all petio- 

 late, ovate to lanceolate, more or less narrowed at base, obtuse or 

 acLitish, the blade 1 or 2 inches long : sepals purplish, 4 lines long ; 

 petals greenish, exserted : pods subterete, very slender, 3 to 5 inches 

 long, arcuate upon ascending pedicels 3 to 6 lines long, the conical 

 sessile stigma slightly bifid. — At Candelaria, Esmeralda County, 

 Nevada; W. H. Shockley, 1881. 



Caulanthus inflatus. Annual, sparingly hispid or glabrous, 

 erect, simple or at length branched, the stem fistulous and inflated, 

 1 or 2 feet high : leaves oblong to ovate, all sessile and auriculate, 

 acutish, entire, 1 to 3 inches long : flowers purple, the glabrous sepals 



