252 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
dato-acuminatis pubescentibus subtus paulo pallidioribus ; capitulis 
1.5 cm. diametro numerosis in panicula composita nutantibus invo- 
lucri squamulis viridibus laxe imbricatis, exterioribus herbaceis tomen- 
tosis valde brevioribus, interioribus pallidioribus subglabris 6 mm. 
longis; floribus pergracillibus; corolla glabra pallide viridi-flaves- 
centi anguste tubulosa nec ampliata, limbi dentibus 3—4 brevissimis 
erectis; pappi setis circa 16 tenuissimis albis et lucidis corollae 
aequantibus; achaeniis glabris columnaribus nigrescentibus 1.4 mm. 
longis. 
This species originally described from Colombian material has been 
rediscovered in marshy places of La Palma, Costa Rica, 24 August, 
1898, by Ad. Tonduz, no, 12,490. 
E. pLecrrantuirouium, Benth., Vidensk. meddel., 1852, p. 76. 
This species has been so poorly understood that it seems worth 
while to give it here a new and somewhat more detailed description. 
The characterization below has been drawn from specimens col- 
lected by Prof. H. Pittier and carefully compared with a detailed 
drawing and fragments of the original plants of Oersted for which I 
am indebted to the kindness and generosity of Sir W.T. Thiselton- 
Dyer, the director of the Royal gardens at Kew. Concerning the 
exact identity of the plants of Oersted and Pittier there can be no 
oubt. Although the scales of the involucre are in several ranks 
this species certainly does not belong to the Cylindrocephala (. 
odoratum, ete.) to which it was by Bentham unfortunately referred. 
— Ramosum, ramis teretibus striatis juventate tomentellis demum 
glabratis ; foliis oppositis ovatis cordatis vel subcordatis acute acu- 
minatis crenato-serrulatis basi ad apicem tenuibus membranaceis 
inter venis translucentibus 7-nervatis, 8-11 em. longis,5—7 em. latis, 
supra pubescentiae sparsis vestigiis tectis subtus in venis reticulatis 
tomentellis, petiolo tenui tomentoso flexuoso 3-7 em. longo; capit- 
ulis parvis 4—5 mm. longis numerosis 30—40-floris brevipedicellatis 
paniculam oppositirameam densam folioso-bracteatam rotundato-co- 
rymbosam formantibus; involucri squamulis ovato-lanceolatis vel 
lanceolatilinearibus acutis vel breviter acuminatis valde inaequalibus 
pluriseriatim imbricatis, exterioribus brevibus tomentellis, interiori- 
bus longioribus 3—5-striatis apice tomentellis; corollis tenuibus 3 
mm, longis glabris parte Suprema tomentella excepta, in fauces parum 
ampliatis ; achaeniis brevibus glabris. — E. swbcordatum, Klatt, Bull. 
soc. bot. Belg., xxxi, pt. 1, 194 ( 1892) partly (as to no. 778), not 
