NEW OR NOTEWORTHY SPECIES. 249 
HYMENOPAPPUS INTEGER. Somewhat tufted perennial, 
hoary with fine flaccose tomentum: leaves all radical, ob- 
lanceolate, obtusish, perfectly entire, 3 to 6 inches long 
including the petiole; the scapiform flowering stem with 
one or more entire leafy bracts: heads few, long-peduncled, 
low-hemispherical, nearly 3 inch broad; bracts of the invo- 
lucre oval or ovate. 
Mogollon Mountains, New Mexico, H. H. Rusby, 1881. 
Senecio Newcomser. Slender and weak simple-stemmed 
and monocephalous perennial, with thin membranaceous 
foliage: leaves few and remote, long-petioled reniform- 
palmate, i. e., of reniform outline, but distinctly and evenly 
T-lobed, the lobes not deep, from broadly triangular to 
broadly oval, mucronulate, the whole hardly an inch wide, 
all the lower on elongated petioles dilated and clasping at 
base; the uppermost cuneate or spatulate and sessile; the 
whole plant with a little loose and probably deciduous 
lanate pubescence: involucre short and broad, almost cam- 
panulate; bracts broad, thin, almost biserial; calyculate 
bracts none: rays 10 or 12, } to # inch long; ovaries gla- 
brous; pappus rather coarse, almost barbellulate. 
Plants discovered on one of the Queen Charlotte Islands, 
British Columbia, in June of this year, by Dr. Charles F. 
Newcombe; the specimens communicated by Mr. J. M. 
Macoun. A rather unsatisfactory member of the genus 
Senecio, far more resembling superficially a debilitated and 
monocephalous Chrysanthemum segetum. Tn its pappus, as 
well as broad involucre, it seems to approach Arnica. But 
it must be either a Senecio or else sui generis. 
VacorIUM cæsium. Evergreen shrub 2 or 3 feet high 
With rather small ovate or oval obtuse or acutish coriaceous 
leaves, these pale and glaucescent above, beneath quite white 
with a dense bloom, puberulent on both faces: flowers soli- 
tary, axillary, on the growing branches of the season; calyx 
