44 PROCEEDINGS OF THE AMERICAN ACADEMY. 



4.2 cm. latis ; capitulis pyramidato-paniculatis ca. 5-floris ; involucri 

 squamis viridibus striatis acutissimis vix pubescentibus ; antheris 

 apice brevissime appendiculatis. — El Ocote, Michoacan or Guerrero, 

 alt. 300 m., 10 November, 1898, Langhisse, n. 616 (hb. Gray, hb. BeroL). 

 Said to be a shrub 1.5 m. high with grayish flowers. 



Eupatorium pelotrophum, n. sp., fruticosum 1.5 m. altum ; ramis 

 gracilibus teretibus fuscis puberulis ; internodiis ca. 5 cm. longis ; foliis 

 oppositis petiolatis ovatis longe acuminatis serratis basi rotundata et 

 apice caudato-attenuato integerrimis a basi 3(-5)-nerviis 7-10 cm. 

 longis 2-4 cm. latis firmiusculis utriuque viridibus scabriusculis, petiolo 

 fusco-puberulo ca. 1 cm. longo; cymis axillaribus glomeruliformibus 

 oppositis ca. 12-capitulatis 2-3 cm. diametro, pedicellis 1-5 mm. longis 

 teretibus sordido-tomentellis, bracteolis minimis fuscis ; involucris 

 subcylindrici-campanulatis saepissime 4-floris, squamis ca. 9 valde 

 iuaequalibus appresse imbricatis lanceolato-linearibus obtusis brunneis 

 dorso pilosiusculis, interioribus ca. 3 mm. longis ; corollis albis ex invo- 

 lucro longe exsertis ca. 4 mm. longis glabris, tubo proprio gracili in 

 fauces cylindricos subaequilongos leviter ampliato, dentibus limbi 

 brevissimis suberectis ; achaeniis (immaturis) fuscis obscure granulatis 

 quam corollae multo brevioribus ; pappi setis albis rectis ca. 20 sursum 

 scabriusculis corollam aequantibus. — In clayey soil on the crest of 

 the Sierra Madre in Michoacan or Guerrero, alt. 2300 m., 16 Februaiy, 

 1899, Langlasse, n. 880 (hb. Gray). This species is clearly related to 

 E. tubijlorum Benth. and B. areola?-e DC, but may be readily distin- 

 guished by its peculiar globular axillary inflorescences and by the fact 

 that the pappus is fully as long as the corolla. 



Eupatorium purpureum L., var Bruneri (Gray), n. comb., foliis 

 oblongo-lanceolatis ternis vel quaternis vel quinis serratis firmiusculis 

 subtus plus minusve cinerascenti-puberulis vel tomentellis albescente 

 reticulato-venulosis ; corymbis planiusculis vel modice convexis. — 

 E. Bruneri Gray, Syn. Fl. i. pt. 2, 96 (1884) ; Coult. Man. Rocky Mt. 

 Reg. 142 (1885). E. atromontanum Nelson, Bot. Gaz. xxxi. 400 (June, 

 1901). E. Rydbergi Britton, Man. 921 (Oct. 1901). —Dr. Gray's 

 original characterization of E. Bruneri was drawn from a very poor 

 specimen and is so misleading that it is by no means surprising that 

 it has never been rightly understood. The leaves are not opposite, as 

 described, but are in whorls of three. In pubescence, venation, tooth- 

 ing, and texture, they correspond accurately with the widel}'' distrib- 

 uted western form of E. •pur'pureum, which as stated above has received 

 two subsequent specific names. The form, although fairly well marked 

 in its extreme, appears to pass by easy transitions into the typical form 

 of E. imrpureum and would therefore seem best treated as a variety. 



