TROPICAL AMERICAN EUPATORIEAE, 247 
acutiusculis subaequalibus (1-2 extimis brevioribus exceptis) ca. 
5-5 m is vix nervatis dorso paullo granulatis; corollis albis 
4.7 mm. longis; tubo proprio gracili 2 mm. longo cum glandulis paucis 
globosis sessilibus instructis; faucibus campanulato-cylindricis 2.7 
mm. longis glabris; dentibus limbi 5 recurvatis; styli ramis sub- 
filiformibus; achaeniis brunneo-nigrescentibus in faciebus glabris in 
costis (pallidioribus) paullo hispidulis apice cum annulo flavidulo 
pappifero coronatis et cum nectario cupuliforme crenatulo instructis; 
pappi setis ca. 25 flavido-albis paullo scabridis—— Co tompBta: in 
open places in the border of the forest, Rio Frio, Dept. Magdalena, alt. 
2300-2750 m., Kalbreyer, no. 1956 (ryPE K., phot. Gr.). 
E. ($ Eximbricata) intercostulatum, spec. nov., fruticosum 
puberulum; ramis teretibus post exsiccationem angulato-costatum 
adscendentibus; foliis oppositis petiolatis deltoideis acutis basi sub- 
truncatis sed ad insertionem breviter acuminatis, ima e basi 3- 
nerviis, crenato-dentatis basi integerrima excepta, membranaceis parce 
granulari-puberulis subtus paullo pallidioribus 3-3.5 em. longis sub- 
aequilatis, dentibus 1.5-2 mm. altis 34 mm. latis; corymbis parvis 
densiusculis multicapitulatis terminalibus et ex axillis superioribus 
oriuntibus; capitulis ca. 15-floris 6.5 mm. altis 6 mm. diametro; in- 
volucri campanulati squamis ca. 13 plerisque subaequalibus lanceolatis 
attenuatis ca. 3 mm. longis dorso griseo-puberulis; corollis albis 3.5 
mm. longis glabris, tubo proprio faucibus subcylindricis bis breviore; 
styli ramis filiformibus; achaeniis sub-10-costulatis (costulis secund- 
ariis 5 vel saltim 34 inter primarias singulatim distributis, omnibus 
sursum hispidulis) 2.3 mm. longis; pappi setis ca. 40 albidis sursum 
sub lente scabratis ca. 2.5 mm. longis—Coxompia: Truandé, in 
the northern part of the Intendencia del Chocd, February, 1858, Dr. 
Arthur Schott, no. 3 (tyre Field Mus., phot. Gr.). 
n the secondary ribs of the achenes this species recalls the case of 
Brickellia Fendleri Gray, for a discussion of which see Robinson, 
em. Gray Herb. i. 12 (1917). Here also, as in that case, the chief 
technical distinction between Eupatorium and Brickellia breaks down 
and it becomes necessary to infer the affinities of the species concerned | 
from habit and traits of minor weight. In the present case it appears 
to the writer that there can be no doubt that the plant is a true Ewpa- 
fortum, although somewhat anomalous in its achenes. 
E. (§ Cylindrocepala) iridolepis, spec. nov., fruticosum 12-15 
m. altum; caule tereti purpureo-brunneo crispe griseo-tomentello 
flexuoso; internodiis 3-6 cm. longis; foliis oppositis ovatis petiolatis 
in axillis proliferis longe acuminatis basi breviter rotundato-cuneatis 

