ROBINSON: CONTRIBUTIONS FROM GRAY HERBARIUM. 249 
E. fistulosum, spec. nov. Robustum 2-3 m. altum, caule tereti 
fistuloso, in parte juvenili tomentello, aetate griseo-puberulo, inter- 
nodiis longis; foliis oppositis magnis orbicularibus cordatis cum sinu 
patente latoque leviter 3-12-lobatis acute dentatis 3-9-palmato- 
nervatis 1.5 dm. diametro supra pubentibus scabriusculisque subtus 
in venis reticulatis tomentosis maturitate nec translucidis nec punc- 
tatis, petiolo tomentoso 1 dm. longo ; capitulis 1 cm. longis 4-5- 
floris numerosissimis pedicellatis in panicula ampla oppositiramea 
rotundato-corymbosa dispositis, involucro elongato tereti, squamulis 
valde inaequalibus et pluriseriatim imbricatis obtusis ciliatis, exterior- 
ibus apice pubescentibus; corollis azureis 9 mm. longis glabris, tubo 
tenui in fauces latiores sensim ampliato ; acbaeniis glabris lucidis ad 
basim attenuatis 3.5 mm. longis, pappi setis 30-40 simplicibus luteis 
lucidis. — Costa Rica: in forests of La Palma toward the Pacific, 
alt. 1550 m., September, 1896, H. Pittier , no. 10,167 ; borders of 
pastures at La Palma, alt. 1459 m., 25 October, 1898, Ad. Tonduz , 
no. 12,505 (type in hb. Gr.). 
A species remarkable for its Cacaliadike foliage. 
E. hebebotryum, Klatt, Bull. soc. bot. Belg., xxxv, 280 (1896), 
as far as it relates to no. 7523, and E. hebebotryum, Coult., in 
J. D. Smith, Enum. pi. Guat., iv, 74 (1895), as to no. 6339, are E. 
popidifolium, IIBK., Nov. gen. et spec., iv, 111 (1820). 
E. hylobium, spec. nov. Lignosum, ramis subteretibus flexuosis 
per lenticellas prominulas bullato-scabris glabris, ramulis inflores- 
centiae puberuhs vel tomentellis; foliis oppositis ovatis petiolatis 
tenuibus attenuatis acuminatis 7 cm. longis, 3.5 cm. latis, supra 
glabris viridibus subtus vix pallidioribus pinnatinervatis in nerviis et 
venis maximis puberulis vel tomentellis, margine argute serrulato, 
dentibus angustissimis divergentibus; pedicellis gracilibus flexuosis, 
bracteolis filiformibus, capitulis circa 14-fioribus 7 mm. altis in pan- 
iculo rotundato oppositirameo dispositis, involucri squamulis pubes¬ 
centibus valde inaequalibus, exterioribus brevibus lanceolato-linear- 
ibus attenuatis, interioribus multo longioribus oblongo-linearibus 
obtusiusculis, receptaculo glabro; corollis 4.5 mm. longis a tubo pro- 
prio gracili in fauces longiores gradatim ampliatis glabris, dentibus 
5 perbrevibus minutissime puberulis ; styli ramis perlongis filiformis, 
achaeniis atrofuscis glabris prismaticis, pappi setis circa 18 albis 
scabridis 3.2 mm. longis. — Mexico: mountain woods between San 
Martin and Ococingo, Chiapas, C. and E. Seler , 13 March, 1896, 
no. 2170 (type in hb. Gr.). 
