250 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Distributed as E. perornatum, Klatt, Leopoldina, xx, 90 (1884), 
a species nearly related but differing in several points, among them 
the different serration of the leaves and the hairy receptacle. 
E hylonomum, spec. nov. Arborescens, ramulis gracilibus stri- 
atis subteretibus brevissime tomentellis vel puberulis pilis sordidis 
incurvatis ; foliis oppositis oblongis 14-16 em. longis, 5—6 em. latis 
leviter serratis vel subintegris penninervatis nigrescentibus tenuiter 
reticulatis glabris supra sublucidis subtus nigro-punctatis obscure et 
erebre pellucido-punctatis basi acutis apice longe caudato-acuminatis 
saepe falcatis, petiolo exalato subtereti puberulo supra canaliculato 
circa 8 mm. longo; panicula ampla pyramidata polycephala sordido- 
tomentella oppositiramea, ramis patentibus; capitulis circa 7-floris 
perparvis numerosis in glomerulis subglobosis plus minusve aggre- 
gatis, involucri squamis circa 9 valde inaequalibus imbricatis exteri- 
oribus perbrevibus ovatis acutiusculis puberulis interioribus late 
oblongis subacutis subglabris 1.8 mm. longis ; corollis glabris 2 mui. 
longis, faucibus ampliatis quam tubus proprior perbrevis ter longior- 
ibus; achaeniis fuscis deorsum attenuatis 1.3 mm. longis puberulis.— 
Costa Rica: a small tree in woods at Las Vueltas, Tucurrique, alt. 
650 to 700 m., December, 1898, Ad. ‘Tonduz, no. 12,882 (type in 
hb. Gr.). 
This species is clearly related to E. Pittieri, Klatt, which is also 
a Costa Rican plant of treelike growth. In Z. hylonomum, how- 
ever, the leaves are longer, thinner, and much less sharply serrate- 
dentate ; the inflorescence is quite different in appearance, the 
heads being arranged in subglobose clusters. The heads as well as 
the individual flowers are also much smaller, 
half as large as in E. Pittieri. 
E. hypodictyon, spec. nov. Lignosum, ramis teretibus griseo- 
purpureis glabris, lenticellis parvis oblongis sparsis; foliis oppositis 
petiolatis firmis late ovatis acuminatis 5—9 cm. longis, 4—6 em. latis 
leviter crenato-dentatis supra viridibus leviter reticulato-venosis 
obscure granulato-puberulis subtus vix pallidioribus valde reticulato- 
venosis in nerviis fulvo-tomentosis pinnatineryatis, petiolis 1-2 em. 
longis pubescentibus, pedicellis 5-12 mm. longis rigidiusculis tomen- 
tellis ; inflorescentia cymoso-corymbosa sordide pubescenti 1.6 dm. 
lata convexa, bracteis foliaceis gradatim reductis ovatis petiolatis ; 
capitulis numerosis 1 em. altis, involucri ovoidei squamulis 3—4-seri- 
atim arcte imbricatis pubescentibus sordide fusco-viridibus obtusis, 
scarcely more than 
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