618 PROCEEDINGS OF THE AMERICAN ACADEMY. 
scariosa, coronatis, aristis nullis. — Rocky slopes, Cerro de Gentile, 
Puebla, Mexico, August, 1907, C. A. Purpus, no. 2539 (type, in hb. 
Gray). This species most nearly. approaches S. arachnoidea Robinson, 
but differs in its much narrower, entire, and revolute-margined leaves, 
grayish-puberulent involucre, etc. 
Eupatorium malacolepis, n. sp., perenne 3-12 dm. altum her- 
baceum vel basi lignescens fere a basi oppositirameum ; ramis teretibus 
brunnescentibus pubescentibus vel puberulis; foliis oppositis petiolatis 
ovatis vel rhomboideis tenuibus crenato-dentatis 4-6 cm. longis 2.4-5 em. 
latis a basi cuneato 3-nervatis ad apicem obtusiusculum angustatis; 
inflorescentia trichotomo-corymbosa ; capitulis parvis numerosissimis ¢a. 
5mm. diametro 40-floris ; involucri campanulati squamis subaeq 
bus oblanceolati-oblongis 2.5 mm. longis pallide viridibus tenuibus 
2~3-nerviis dorso tomentellis margine tenuissimis saepissime ciliolatis; — 
corollis albis 2.4mm. longis, tubo proprio gracili faucibus distinete 
ampligtis campanulatis paulo longiore; achaeniis nigris lneidis gla- 
berrimis 5-angulatis 1mm. longis; pappi setis paucis corollam su 
aequantibus laete albis tenuissimis barbulatis. — In dense woods along 
water courses, San Ramon, Durango, Mexico, 21 April-18 May, 1906, 
Dr. Edward Palmer, no. 90 (type, in bb. Gray) ; oak woods on hills 
near Huachinango, alt. 1375-1675 m., 4 March, 1897, 2. W. Nelso 
no. 4011 (hb. Gray, distributed as HE. pazcuarense HBK.). E. malaor 
lepis differs from E. pazcuarense HBK. and E. isolepis Robinson, 1 
which it bears a considerable resemblance, in having much 
flowers and shorter glabrous achenes. : 
Eupatorium oresbioides, n. sp., perenne lignescens ; ramis tere- 
tibus plus minusve flexuosis foliatis fulvo-tomentellis ; ramulis et 
pedunculis et petiolis purpureo-lanatis, pilis creberrimis temutsstims 
moniliformibus ; foliis oppositis graciliter petiolatis late ovatis hastatis 
8-11 cm. longis 6-10 cm. latis tenuibus duplice mucronato-serTal 
caudato-acuminatis basi rotundatis vel subtruncatis cum an 
1-3 mm. longis ; capitulis ca. 17-floris 8 mm. altis; receptac 
convexo brevissime setulifero ; involucri anguste campan 
valde inaequalibus 3-4-seriatim imbricatis, extimis mint reflexis, 
intermediis lanceolatis nunc appressis nunc laxe patentibus vel corollis 
interioribus oblongis obtusis erosis puberulis violaceo-tinets ; 
