ROBINSON. — DIAGNOSES OF AMERICAN EUPATORIEAE. 275 



metro ; capitulis ca. 6-floris sessilibus in glomerulis rotundatis congestis ; 

 squamis involucri lanceolato-linearibus acuminatis valde inaequalibus sub- 

 uniseriatis dorso fulvo-puberulis ; corollis albis anguste tubulosis 4 rum. 

 longis, limbo resinoso-punctato leviter ampliato brevissime 5-dentato ; 

 achaeniis prismaticis vix 3 mm. longis ; setis pappi ca. 40 barbel latis 

 8.5 mm. longis sordido-albis ; antberis breviter sed distincte in apice ap- 

 pendiculatis. — Sandy soil, Clmta, Michoacan or Guerrero, Mexico, alt. 

 25 m., 20 June, 1898, E. Langlasse, no. 183 (type, in hb. Gr.). In 

 habit this species much resembles E. albicaule, Sch. Bip., but differs in 

 its thin punctate leaves, acuminate iuvolucral scales, etc. 



Eupatorium Lozanoanum, n. sp. Fruticosum oppositirameum 

 glaberrimum; ramis striatulis teretibus fuscescentibus, ramulis teretibus vi- 

 ridibus foliatis, internodiis 2-9 em. longis ; foliis oppositis petiolatis ovato- 

 lanceolatis falcatim caudato-acuminatis cuspidato-serratis basi inaequali 

 obtusis vel rotundatis supra basin trinerviis sed etiam prope basin nerviis 

 duabus parvis brevibus marginalibus plus minusve obscuris munitis utrin- 

 que laete viridibus sublucidis pulcherrime pellucide punctatis reticulatis- 

 que 8-10 cm. longis 2-3 cm. latis ; paniculis terminalibus laxis trichotomis 

 5-10 cm. diametro pyramidalibus G0-80-capitatis, ramulis gracilibus saepe 

 divaricatis plus minusve puberulis capitula subsessilia ad apicem gerenti- 

 bus ; capitulis cylindricis 1 cm. longis 3 mm. diametro 4-floris: involucri 

 squamis paucis (ca. 8) valde inaequalibus viridibus striatulis convexis 

 apice obtusiusculis, exterioribus minimis ovatis, interioribus oblongis ; 

 corollis viridi-albis tubulosis 5 mm. longis glabris, tubo proprio faucibus 

 vix ampliatis subaequanti, dentibus limbi 5 brevibus triangularibus paten- 

 tibus ; antberis apice longe appendiculatis ; achaeniis prismaticis deorsum 

 angustatis 3.7 mm. longis in costis 5 hispidulis inter costis obscure puber- 

 ulis ; pappi setis ca. 40 albis sursum-barbellatis, plurimis sublongioribus 

 corollae superantibus prope apicem subdilatatis ; styli ramis rectiusculis 

 longisshnis vix clavatis flavido-brunneis. — In the deep barranca below 

 Trinidad Iron Works, Hidalgo, Mexico, 12 July, 1904, C. G. Pringle, 

 no. 8942 (type, in hb. Gr.). Dedicated to Mr. Filemdn L. Lozauo, tbe 

 faithful and efficient assistant of Mr. Pringle in his field work. 



Eupatorium petraeum, n. sp. Frutex 1.5 m. altus, caule solitario 

 tereti purpureomaculato minute puberulo ; foliis alternis late ovatis vel 

 suborbicularibus acutiusculis angulatis vel sublobatis undulato-dentatis 

 petiolatis supra basin 3-(5)-nerviis utrinque reticulatis in nerviis pube- 

 rulis 10 cm. longis 9 cm. latis, petiolo puberulo subtereti 2-2.6 cm. longo; 

 panicula ramosissima ampla pyramidata obscure pubescenti, bracteis 

 minimis angustis, ramulis prope apicem solum capituliferis, pedicellis 



