136 PITTONIA. 
specimens more recently collected in the same general re- 
gion abundantly confirm it. Such is one obtained on Mt. 
San Francisco in northern Arizona, by Mr. Knowlton, in 
1889. The species is more roughly and canescently pubes- 
cent than any other; is tall, erect, and very strict, both the 
leaves and the pods being suberect, the latter short, stout, 
subterete and obtuse, being also about as conspicuously 
canescent as the leaves, and the fruiting raceme is often 
more than a foot long. Its range seems to be from eastern 
New Mexico to northwestern Arizona. 
14. C. AnarLLOSUS. Stout biennial, simple, mostly 5 to 10 
inches high, very leafy, the whole herbage pale almost to 
whiteness with the usual pubescence: leaves narrowly lance- 
olate, entire or runcinate-toothed, crowded upon the lower 
part of the stem and ascending or suberect, not spreading 
and rosulate as in other species: raceme densely subcapi- 
tate or more elongated: flowers large, pale yellow; sepals 
densely pubescent, not strongly saccate at base; petals gla- 
brous, the blade broad and ample. 
On clayey bluffs skirting the valley of the Arkansas near 
Pueblo, Colorado; collected by the author in May, 1873, 
and not since seen by him either in the field or in any of 
the herbaria. 
15. C. svRTICOLA. Erysimum syrticola, Sheld. Bull. Torr. 
Club. xx. 285. Making due allowance for errors in the de- 
scriptive terminology of an author who can say of a plant 
that it is “ glaucous throughout with close appressed hairs,” 
the characters of flower and fruit which Mr. Sheldon assigns 
clearly indicate something distinct enough from both C. 
asper and C. inconspicuus. 'That it is cinereous or pale by 
the abundance of the appressed pubescence must exclude it 
from the latter, while the very small petals and short sub- 
erect pods (of only $ to 1} inches’ length) would as conclu- 
sively preclude its being referred to C. asper. It is unfair to 
