TROPICAL AMERICAN COMPOSITAE. 33 



correspondence is pretty close and in many details amounts to identity. 



E. (§ Subimbricata) Sprucei, spec, nov., sufFruticosum 2-3 dm. 

 altum suberectum; radice e fibris paucis gracilibus duris elongatis 

 sistente; caule curvato-adscendente, basin versus distincte lignescente 

 4 mm. crasso noduloso griseo-brunneo a deliapsu foliorum nudato, in 

 parte media folioso, internodiis brevibus, in parte superiore gracili 

 erecto crispe fuho-puberulo paniculatim florifero pauUo foliaceo- 

 bracteato, internodiis elongatis; foliis oppositis sessilibus oblanceo- 

 latis utroque attenuatis acutisque subremote denticulatis (dentibus 

 0.5 mm. altis 5 mm. distantibus) penniveniis (venis utroque 6-7 

 adscendentibus curvatis inter se anastomosantibus) membranaceis 

 supra viridibus glaberrimis obscuris subtus pallidioribus praecipue 

 in nervo venisque sordide pubescentibus 5-10 cm. longis 1-1.8 cm. 

 latis; capitulis 6 mm. longis 5 mm. crassis ca. 18-floris; pedicellis 

 filiformibus valde inaequalibus (1-6 mm. longis); involucri turbinati 

 squamis ca. 20 lineari-oblongis valde inaequalibus obtusis stramineis 

 plerisque medio 2-costulatis apicem versus dorso puberulis, extimis 

 brevissimis ovalibus subherbaceis ; corollis verisimiliter albis 3 mm. 

 longis glabris, tubo proprio gracillimo 1.8 mm. longo, faucibus tur- 

 binatis distincte ampliatis 1.2 mm. altis; styli rarais cum appendicibus 

 tenuibus attenuatis flexuosis papilloso-scabratis munitis; antheris 

 apice cum appendice membranacea angusta instructis; achaeniis 

 (submaturis) fuscis 1.5 mm. longis in angulis parce hispidulis; pappi 

 setis ca. 25 delicatissimis albis 2.5 mm. longis vix scabratis. — ^Peru: 

 along the River Huallaga, September, 1855, Spruce, no. 4167 (Gr.). 



This low, upright undershrub is obviously a member of the peculiar 

 group of § Subimbricata to which the following species may be re- 

 ferred: E. elata Steetz of the Panama region, E. Squiresii Rusby 

 of the delta regions of the Orinoco in Venezuela and the Magdalena 

 in Colombia, E. turbacense Hieron. also from Colombia, and E. 

 tovarense Robinson from western Venezuela. In all these species the 

 leaves are of the oblong4anceolate type, opposite and feather-veined, 

 the heads are small, in a loose, somewhat divaricately branched panicle; 

 the involucre is stramineous, of delicate graduated scales, which are 

 obtuse and usually a little tufted with a sparse puberulence on the 

 back toward the tip; finally in all the style-branches have appendages 

 which are slender-filiform, more delicate, more flexuous, and more 

 distinctly hispidulous than is usual in Eupatorium. In regard to the 

 style-branches these species recall conditions usual in Vernonia and in 

 Brickellia diffusa. E. Sprucei, geographically remote from the others, 

 differs from all of the others in its much lower stature, being only 



