148 BOTANICAL GAZETTE [avcust 
feature of C. oresbia is the straight corolla with the conspicuously long lobes of the q 
lower lip. ; 
SeNEcIO HoweLur Greene, var. lithophilus, n. var.—A forma typica 
recedit foliis multo amplioribus, maximis 3-15°™ longis 1-3.5°™ latis 
integris vel inaequaliter et alte dentatis. 
In stony dry soil, Imnaha, Wallowa Mountains, ‘Orem, about 1830”, 
12 August, 1906, William C. Cusick, no. 3129 (hb. Field Mus.). 
Mr. Cusick’s specimens under the number here cited seem at first glance to 
be more than of varietal significance, but a comparison with the type of S. Howellii 
and a considerable suite of specimens from the Gray Herbarium and in the 4 
herbarium of the Field Museum show the plant in hand to be only an extreme 
variation with large, broad, entire or coarsely and unequally dentate leaves— a 
. M. Greenman, Field Museum oj Natural History, Chicago. 
