TROPICAL AMERICAN EUPATOKIEAE. 247 



acutiusculis subaoqiuilibus (1-2 extiinis breviorlbus cxccptis) ca. 

 4.5-5 mm. longis vix nervatis dorso paullo granulatis; corollis albis 

 4.7 mm. longis; tiibo proprio gnicili 2 mm. longo cum glaiidulis paucis 

 globosis sessilibus instructis; faucibus campanulato-cylindricis 2.7 

 mm. longis glabris; dentibus limbi 5 recurvatis; styli ramis sub- 

 filiformibus; achaeniis brunnco-nigrescentibus in faciebus glabris in 

 costis (pallidioribus) paullo hispidulis apice cum annulo flavidulo 

 pappifero coronatis et cum ncctario cupuliforme crenatulo instructis; 

 pappi sctis ca. 25 flavido-albis paullo scabridis. — Colomhia: in 

 open places in the border of the forest, Rio Frio, Dept. Magdalena, alt. 

 2300-2750 m., Kalhrcycr, no. 1950 (type 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 cm. longis sub- 

 aequilatis, dentibus 1.5-2 mm. altis 3-4 mm. latis; corymbis parvis 

 densiusculis multicapitulatis terminalibus et ex axillis superioribus 

 oriuntibus; capitulis ca. 15-floris 0.5 mm. altis 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 3^ 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. — Colombia: Truando, in 

 the northern part of the Intendencia del Choco, February, 1858, Br. 

 Arthur Schott, no. 3 (type Field Mus., phot. Gr.). 



In the secondary ribs of the achenes this species recalls the case of 

 Brickellia Fendleri Gray, for a discussion of which see Robinson, 

 Mem. 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 Eupa- 

 torium, although somewhat anomalous in its achenes. 



E. (§ Cylindrocepala) iridolepis, spec, nov., fruticosum 12-15 

 dm. altum; caule tereti purpureo-brunneo crispe griseo-tomentello 

 flexuoso; internodiis 3-0 cm. longis; foliis oppositis ovatis petiolatis 

 in axillis proliferis longe acuminatis basi breviter rotundato-cuneatis 



