ROBINSON. —- NEW SPERMATOPHYTES, CHIEFLY FROM MEXICO. 33 
is true Schultz well knew the Mexican plant, and ascribed to it the 
same specific name (vanillosmoides), but under another generic name. 
In describing this hitherto uncharacterized Mexican plant it seems 
unwise to take up the nomen nudum E. vanillosmoides Hemsl., a name 
inadvertently ascribed by Mr. Hemsley to Schultz, although, as we 
have seen, Schultz used this binominal combination for quite a differ- 
ent plant of Brazil. To avoid probable confusion the Mexican plant is 
herewith given a new and distinctive name. The designation chosen 
is suggested by the fact that some of the internodes below the inflo- 
rescence are often swollen, hollowed, and provided with a somewhat 
regular rounded ingress for small insects, probably ants. These en- 
largements are not always present, and are doubtless of the nature of 
galls developing through insect irritation, and later serving as nesting 
places for the insects. 
Eupatorium hymenolepis Robinson, n. sp., gracile patente ramo- 
sum ; caule tereti nigrescenti obsolete strigilloso; ramis gracillimis . 
flexuosis ; foliis oppositis longe petiolatis ovatis vel rhomboideis basi 
abrupte angustata acuta excepta grosse tis apice caudato-attenuatis 
6-7.5 cm. longis 2-3.5 cm. latis tenuibus utrinque viridibus in nervis 
adpresse pilosiusculis subtus haud pallidioribus supra sparse strigillo- 
sis; cymis parvis 6-10-capitulatis graciliter pedunculatis saepissime 
nutantibus ; capitulis parvis 3.5 mm. longis ca. 18-floris ; involueri 
companulati squamis valde inaequalibus albo-scareosis in media parte 
tantum viridi-striatis, interioribus lineari-oblongis obt » exterior- 
ibus brevioribus acutis vel acuminatis ; corollis albis 2.5 mm. longis 
glabris basin versus modice angustatis; dentibus 5 ovato-deltoideis 
brevibus patentibus ; styli-ramis albis paulo clavellatis ; achaeniis ni- 
gris 5-angulatis 1.3 mm. longis basi albo-callosis sursum minute his- 
pidulis, costis albidis ; pappi setis gracillimis ca. 20 corolla distincte 
brevioribus. — Falls of Tzararacua, near Uruapan, Mexico, 28 January, 
1907, C. G. Pringle, no. 10,355 (type, in hb. Gray). This species 
somewhat resembles H. hymenophyllum Klatt, but has slightly firmer 
leaves 3-nerved from the very base instead of from a point somewhat 
above the base; it differs also in its involucre. From £. Gonzale 
Robinson, to which it also bears some resemblance, it may be readily 
distinguished by its more attenuate leaves and scarious involucral 
scales. 
Eupatorium isolepis Robinson, n. sp., suffruticosum : caulibus te- 
retibus flexuosis oppositirameis brunneo-purpurels pubescentibus, pilis 
moniliformibus transverse purpureo-striatis ; foliis oppositis iter 
petiolatis ovatis acuminatis serratis tenuibus subpellucidis subconcol- 
oribus supra glabris subtus in nervis sparse pilosis penninerviis basi 
VOL, XLu1—3_ 
