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 mm. 
longis, limbo resinoso-punctato leviter ampliato brevissime 5-dentato ; 
achaeniis prismaticis vix 3 mm, longis; setis pappi ca. 40 barbellatis 
mm. longis sordido-albis ; antheris breviter sed distincte in apice ap- 
Giasitecatta — Sandy soil, Chuta, Michoacan or Guerrero, Mexico. alt. 
- 25m., 20 June, 1898, H#. Langlassé, no. 183 (type, in hb. Gr.). In 
habit this species much resembles Z. albicaule, Sch. Bip., but differs in 
its thin punctate leaves, acuminate involucral scales, ete. 
Eupatorium Lozanoanum, pn. sp. Fruticosum oppositirameum 
glaberrimum ; ramis striatulis teretibus fuscescentibus, ramulis teretibus vi- 
ridibus foliatis, internodiis 2-9 cm. 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 em, longis 2-3 cm. latis; paniculis terminalibus laxis trichotomis 
5-10 cm. diametro pyramidalibus 60-80-capitatis, ramulis gracilibus saepe 
divaricatis plus minusve puberulis capitula subsessilia ad apicem gerenti- 
bus ; capitulis cylindricis 1 em. 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 ; antheris 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 
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.). cated to Mr. Filemén L. Lozano, the 
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 em. longis 9 cm. latis, petiolo puberulo subtereti 2-2.6 cm. longo; 
panicula ramosissima ampla pyramidata obscure pubescenti, bracteis 
minimis angustis, ramulis prope apicem solam capituliferis, ‘pelliodllis 
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