Eupatorieae novae Americanae. 41 



much resembles E. albicaule Sch. Bip., but differs in its thin punctate 

 leaves, acuminate involucral scales, etc. 



6. Eupatorium Lozanoanum Robs., 1. c. p. 275. 



Fruticosum oppositirameum glaberrimum; ramis striatulis teretibus 

 fuscescentibus, ramulis teretibus viridibus foliatis, internodiis 2 — 9 cm 

 longis; foliis oppositis petiolatis ovato-lanceolatis falcatim caudato-acumi- 

 natis cuspidato-serratis basi inaequali obtusis vel rotundatis supra basin 

 trinerviis sed etiam prope basin nerviis duabus parvis brevibus margi- 

 nalibus plus minusve obscuris munitis utrinque laete viridibus sublucidis 

 pulcherrime pellucide punctatis reticulatisque 8 — 10 cm longis 2 — 3 cm 

 latis; paniculis terminalibus laxis trichotomis 5 — 10 cm diametro pyrami- 

 dalibus 60 — 80-capitatis, ramulis gracilibus saepe divaricatis plus minusve 

 puberulis capitula subsessilia ad apicem gerentibus; 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 patentibus; antheris apice longe appendi- 

 cular ; achaeniis prismaticis deorsum angustatis 3,7 mm longis in costis 

 5 hispidulis inter costis obscure puberulis; pappi setis ca. 40 albis sursum- 

 barbellatis, plurimis sublongioribus corollae superantibus prope apicem sub- 

 dilatatis; styli ramis retiusculis longissimis 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. Filemon L. Lozano, the faithful and efficient assistant of Mr. Pringle 

 in his field work. 



7. Eupatorium petraeum Robs., 1. c. p. 275. 



Frutex 1,5 m altus, caule solitario tereti purpureomaculato minute 

 puberulo; foliis alternis late ovatis vel suborbicularibus acutiusculis angu- 

 latis vel sublobatis undulato-dentatis petiolatis supra basin 3 — (5)-nerviis 

 utrinque reticularis in nerviis puberulis 10 cm longis 9 cm latis, petiolo 

 puberulo subtereti 2 — 2,6 cm longo; panicula ramosissima ampla pyra- 

 midata obscure pubescenti, bracteis minimis angustis, ramulis prope apicem 

 solum capituliferis, pedicellis filiformibus divergentibus 3 mm longis; capi- 

 tulis numerosissimis parvis 4 mm longis ca. 14-floris; involucri campa- 

 nulati squamis valde inaequalibus sub-3-seriatim imbricatis, extimis bre- 

 vissimis parvis paucis lanceolatis subacutis puberulis, interioribus elliptico- 

 oblongis obtusis vel rotundatis supra mediam partem pubescentibus 2.2 mm 

 longis, receptaculo leviter convexo paleaceo, paleis caducis linearibus 

 obtusiusculis apice puberulis; corollis albis minute sparseque glandulosis 



2 mm longis, faucibus gradatim ampliatis tubo proprio vix longioribus, 

 dentibus limbi ovato-deltoideis acutiusculis brevissimis recurvatis; antheris 

 subtruncatis sed inter apices thecarum connectivo valde expanso evas- 

 culoso; achaeniis brevibus deorsum angustatis in costis 5 sursum hispi- 

 dulis, setis pappi ca. 15 albis sursum barbellatis 1,7 mm longis. 



In granitic soil, Sierra Madre in the State of Guerrero, Mexico, altitude 



