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 8. 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 cm. 

 latis a basi cuneato 3-nervatis ad apicem obtusiusculum angustatis ; 

 inflorescentia trichotomo-corymbosa ; capitulis parvis numerosissimis ca. 

 5 mm. diametro 40-floris ; involucri campanulati squamis subaequali- 

 bus oblanceolati-oblongis 2.5 mm. longis pallide viridibus tenuibus 

 2-3-nerviis dorso tomentellis margine tenuissimis saepissime ciliolatis ; 

 corollis albis 2.4 mm. longis, tubo proprio gracili faucibus distincte 

 ampliatis campanulatis paulo longiore ; achaeniis nigris lucidis gla- 

 berrimis 5-angulatis 1 mm. longis ; pappi setis paucis corollam sub- 

 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 hb. Gray) ; oak woods on hills 

 near Huachinango, alt. 1375-1675 m., 4 March, 1897, E. W. Nelson, 

 no. 4011 (hb. Gray, distributed as E. pazcuarense HBK.). E. malaco- 

 lepis differs from E. pazcuarense HBK. and E. isolepis Robinson, to 

 which it bears a considerable resemblance, in having much smaller 

 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 tenuissimis 

 moniliformibus ; foliis oppositis graciliter petiolatis late ovatis hastatis 

 8-11 cm. longis 6-10 cm. latis tenuibus duplice mucronato-serratis 

 caudato-acuminatis basi rotundatis vel subtruncatis cum angulis vel 

 lobis lateralibus l(-3) acuminatis divaricatis utroque munitis supra 

 viridibus glabriusculis subtus praecipue in nerviis venisque tomentellis, 

 nerviis ca. 7 paulo supra basin pinnatim oriuntibus, petiolis 1.5-5 cm. 

 longis; panicula corymbiformi subglobosa multicapitulata 8-10 cm. 

 diametro ; bracteis petiolatis inferioribus foliaceis superioribus minimis ; 

 bracteolis filiformibus 2 mm. longis ; pedicellis gracillimis patentibus 

 1-3 mm. longis ; capitulis ca. 17-fioris 8 mm. altis ; receptaculo parvo 

 convexo brevissime setulifero ; involucri anguste campanulati squamis 

 valde inaequalibus 3-4-seriatim imbricatis, extimis minimis linearibus, 

 intermediis lanceolatis nunc appressis nunc laxe patentibus vel reflexis, 

 interioribus oblongis obtusis erosis puberulis violaceo-tinctis ; corollis 



