ERIGERON IN NORTH DAKOTA 2ST 
apicem paene simplices, deinde corymboso-ramosi, pilis albis 
densis diffusis vel adscendentibus infra vestiti qui inflorescentiam 
versus molliores et appressi fiunt. Folia obscure viridia, pubescen- 
tia densa, molli, appressa vestita, basilaria et in caule dimidio 
inferiore spatulata vel oblonga vel lanceolata, petiolis perlongis, 
strigosis, integra vel remote serrata; folia caulina superiora lineari- 
lanceolata, amplitudine sensim reducta, summa saepe bracteis 
tantum similia. Flores 0.5-1 cm. diametro, radiis albis 2-4 mm. 
longis, 0.5 mm. latis, bractearum series exterior pilis diffusis vel 
appressis hispidulosior. Inflorescentia corymboso-cymosa, an- 
gustior et congesta. 
Stems 1-4, erect and stiff, 2-4 dm. high, very leafy, dark 
brown in the lower part, simple almost to the top, then corymbosely 
branched, densely covered with white, spreading or ascending 
hairs below, which toward the inflorescence become more soft 
and appressed, almost velvety to the touch. Leaves of a dull, 
dark green, with a dense, soft, appressed pubescence, at the base 
and on the lower half of the stem spatulate or oblong or lanceolate 
with strigose petioles of their half or whole length, entire or sparingly 
serrate; upper cauline leaves linear-lanceolate, gradually reduced 
in size, the uppermost often mere bracts. Flowers 0.5-I em. 
across, with white rays 2-4 mm. long, 0.5 mm. wide, and the outer 
series of bracts rather hispidulous with spreading or appressed 
hairs. Inflorescence corymbosely cymose, rather narrow and 
congested. 
This daisy was found by the writer on July 17, 1910, ina 
natural meadow along a coulée in the vicinity of Leeds, Benson 
County. As it is a near relative of E. strigosus Muhl., it was at 
first suspected of being identical with this species and introduced 
with grass seed. But at close inspection its different indument 
on stems and involucral bracts, its dull green color, its crowded 
foliage and inflorescence and its small rays (4-7 mm. long in 
E. strigosus) were found to be minute indument on the stem, the 
light green, distant leaves, the glabrate involucral bracts, the patu- 
lous inflorescence and the taller plants of this weed, so far un- 
discovered in this vicinity. I believe that this daisy of ours 
is a native western plant. 
6. Erigeron philadelphicus \,. 
Common in wet soil. A very rank, large and lax form grows 
