12 PITTONIA. 
subsessile curved and almost torulose pods are more like 
those of some Thelypodium ; yet the plant will readily be ad- 
mitted to be a strict congener of the type-species of SIBARA. 
* * Leaves not pinnately divided. 
6. S. PanMERI. Cardamine Palmeri, Wats. Proc. Am. 
Acad. xxiv. 38.—Annual and erect, with the habit and the 
ascending long slender pods of S. filifolia, equally pale and 
glaucous, the long petioles of the rounded and a 
lobed leaves aparsely hirsute. 
It was an almost unaccountable suggestion, that of the 
late Mr. Watson, that this glaucous annual of a desert sea- 
shore, almost within the tropics, could have any relation to 
that green and flaccid perennial of frigid alpine brooklets, 
Cardamine cordifolia. From certain characteristics of the 
pod, as well as from the bloom upon the herbage, a rela- 
tionship with Thelypodium might more naturally have been 
inferred. 
