NEW CHORIPETALOUS EXOGENS. 19 
by the present writer, and distributed as a variety of D, 
streptocarpa, according to what was then Dr. Gray's opinion 
regarding it. 
DRABA SPECTABILIS. Perennial, the stems numerous, 
erect, 6 to 12 inches high, equably and rather copiously 
leafy to the middle, the upper one-half occupied by the long 
and showy short-peduncled raceme: basal leaves few, nar- 
rowly obovate, short-petiolate, an inch long or more; the 
cauline oblong-obovate, sharply and even sometimes deeply 
and incisely serrate-toothed ; all the foliage thinnish as to 
texture and green, the lower face sparsely clothed with bifid 
and closely appressed hairs, or some of the hairs showing a 
third and short branch, upper face more sparingly rough- 
ened with binate or ternate shorter and merely ascending 
(not appressed) hairs: sepals from almost glabrous to sparsely 
hirsute with mostly simple hairs: petals very large, golden- 
yellow: pods 4 to 4 inch long, oblong, obtuse or acutish, 
glabrate or hirtellous, tipped with a prominent style, their 
ascending or spreading pedicels 3 to ? inch long, hirsute in 
a line beneath, otherwise glabrous. 
Plentiful at from about 10,000 to 11,000 feet altitude in 
the La Plata Mountains of southern Colorado; collected in 
1898, by Baker, Earle and Tracy, and distributed by them 
partly for D. aurea and partly for D. stylosa, Heller; but the 
plant has excellent specific characters of its own, and is 
doubtless the most showy known Draba; in this respect 
easily rivalling the scapose D. Mogollonica, Greene. 
DRABA LUTEOLA. Perennial,6to 10 inches high, paleand 
cinereously stellate-pubescent throughout, with only a seanty 
and dimly perceptible villous pubescence of simple hairs 
mixed with the stellate on the stem: leaves all ovate-lanceo- 
late, acutish, entire or serrate-toothed, those of the tall flower- 
ing stems equably distributed and ascending: racemes 
usually several from midway of the stem, narrow and rather 
strict: sepals thin, yellowish-green, hirsute with mostly 
