200 PITTONIA. 
specimens are in Mr. C. F. Baker's collection of 1899, from 
the high mountains about Pagosa Peak, southern Colorado. 
Thirty years ago, when I first saw and collected this sub- 
alpine woodland species, Dr. Gray considered it to be the 
Old World Sisymbrium Sophia; but he afterwards referred it 
to S. Hartwegianum, which is a Californian plant most unlike 
this in habit, and character of racemes and pods. It is by 
far the largest species of its genus, and does not flower until 
July or August. 
v : ; : 
THELYPODIUM SIMPLEX. Stem solitary from a biennial 
or perennial root, stout, erect and strict, 2 feet high or more, 
leafy to about the middle, thence racemose to the summit, 
the greatly elongated raceme strict, but not dense; the 
whole plant glabrous and very glaucous; the tufted basal 
leaves oblanceolate entire, scarcely exceeding an inch in 
length; cauline as long, lanceolate, sagittate-clasping, very 
erect: flowers white or flesh-colored, 4 inch long; calyx 
saccate; petals nearly erect but well exserted, with broad 
claw and narrowly spatulate strongly crenulate limb: 
anthers sagittate: pods 2 inches long, nearly erect, slender, 
acute. 
Subsaline meadows, Dixey Valley, Lassen County, Cali- 
fornia, 6 July, 1894, M. S. Baker. 
“THYSANOCARPUS FILIPES. Slender, branched from near the 
base and all the branches racemose: herbage scarcely glauce- 
scent, deep-green: leaves of the stem (the lowest not seen) 
lanceolate, acuminate, sessile by a subhastate base: racemes 
dense: pods round-obovate, 1 inch long, on filiform pedicels 
of 4 to $ inch, the whole body of the fruit very minutely 
hirtellous, only obscurely venulose, the rays about 12, for 
the most part united near the summit and forming elliptic 
