ROBINSON. —- NEW SPERMATOPHYTES, CHIEFLY FROM MEXICO. 85 
subtus albidis prominulis, venis lateralibus utrinque ca. 5 inaequidis- 
tantibus maximis supra basin orientibus ; petiolis 5-8 mm. longis levi- 
ter marginatis basi linea transversa connexis ; inflorescentiis corymbosis 
valde convexis oppositirameis multicapitulatis; bracteis inferioribus 
petiolatis ovatis foliis similibus sed multo minoribus superioribus 
anguste linearibus sessilibus; pedicellis rectis filiformibus patenti- 
ascendentibus pilis crispis obtectis ; capitulis parvis numerosissimis 
saepissime 5-floris 8 mm. longis; squamis involucri ca. 8 linearibus 
vix imbricatis sordide puberulis acutiusculis interioribus 4-5 mm. 
longis extimis 1-3 multo brevioribus ; corollis glabriusculis 4.6 mm. 
longis albidis vel roseis, tubo proprio gracili quam faucibus subcylindrati 
breviore, dentibus limbi ovato-deltoideis ; achaeniis nigris prismaticis 
griseo-puberulis 3 mm. longis ; pappi setis praesertim basi pulcherrime 
roseis corollam vix aequantibus. — Mountains near Saltillo, Coahuila, 
Mexico, alt. 2135 m., 5 October, 1905, 0. G. Pringle, no. 10,080 (type, 
in hb. Gray). his species is obviously related to L. micranthum Less. 
It differs, however, in many small characters. ‘T'he leaves are thin and 
translucent while in 4. micranthum they are thickish and quite opaque. 
‘ In £. saltillense they are also much broader relatively to their length 
and not attenuate. The nervation is furthermore quite different, for 
in E, micranthum the lateral veins leave the midnerve in a pretty reg- 
ular pinnate fashion, while in &. saltillense they are less numerous and 
less regular and give the leaves somewhat the appearance of being 3- 
nerved from a point above the base. 
Eupatorium sexangulare (Klatt) Robinson, n. comb. Piptocarpha 
sewangularis Klatt, Botanisches Beiblatt zur Leopoldina, 1895, p. 1. 
Mr. H. A. Gleason, during a recent examination of the Vernonieae in 
the Gray Herbarium, called my attention to the type of Dr. Klatt's 
Piptocarpha sexangularis, which appeared wholly irreconcilable with 
the genus in which it had been placed and indeed with any other genus 
of the Vernonieae. Unfortunately the specimen, although showing well 
the stem, leaves, inflorescence, involucral scales, ete., has but very few 
flowers, and these have been so damaged by decay or insects that it is 
impossible to state precisely the form of the anthers or style-tips ; nev- 
ertheless there can be no doubt that the plant is a Hupatorium, and as 
it appears to be unlike any species previously referred to that genus, it 
may be simply transferred thither. In its sharply angled stem and 
large thickish lanceolate leaves it bears considerable resemblance to the 
plant here described as E. hospitale. It may be readily distinguished, 
however, by the different venation of the leaves, entirely glabrous 
achenes, ete. a 
_ Eupatorium sphenopodum Robinson, n. sp., herbaceum oppositi- 
