218 PITTONIA. 
the ealyx: leaves linear, entire: flowers subsessile, 4 lines 
long; sepals nearly equal and alike, greenish white with 
white tips, clothed with a short bristly white pubescence: 
petals white : stamens in three very unequal pairs ; filaments 
dark purple, the uppermost pair united almost to the summit; 
anthers linear-sagittate, white : pods narrowly linear, recurved. 
Collected at Highland Springs, Lake County, California, 
June, 1888, by Mr. Arthur B. Simonds. A plant with the 
slender habit of the rare S. polygaloides ; but the flowers of 
totally different character. 
ErIGERON Sonnet Stems a span high, solitary, slender, 
erect, apparently from horizontal running rootstocks : whole 
plant strigillose-canescent: leaves mostly at base of stem, 
2 or 3 inches long, lanceolate, narrowed to a petiole which is 
dilated and half-clasping at base: peduncle solitary, scapi- 
form, remotely bracted, usually monocephalous: involucre 
campanulate, less than a half-inch high, the bracts subequal, 
in about 2 series: rays 9 to 12, broad, purplish. 
Western slope of the Washoe Mountains, Nevada, 22 July. 
. 1888, Mr C. F. Sonne. A plant which, like several other 
species of the West American mountain districts, may almost 
as well be placed in the genus Asfer as in Erigeron, having 
the few and broad rays of the former, but the involucre of the 
latter. The specimens are too young, but there is an enlarge- 
ment of the nodes at the base of the stem which would seem - 
to se age ae that bulblets are ultimately formed in the leaf- 
ERIGERON PETROPHILUS. Canescently hirsute-pubescent, 
except the dark green and somewhat glandular inflorescence : 
stems clustered from a suffrutescent base, ascending, a foot 
high or more, rigid and brittle, very leafy up to the loose 
terminal cymose panicle: leaves linear-spatulate, obtuse, en- 
tire, an inch long: involucre turbinate, the numerous and 
very unequal bracts closely imbricated in several series : rays 
