TROPICAL AMERICAN EUPATORIEAE. 239 



summit of C'liiriciui Volcano, Jilt. 3374 m., William R. Maxon, no. 

 5360 (type U. S.) ; dry sunny places, upper belt of Chiriqui Volcano, 

 northern slope, alt. 3374 m., Pittier, no. 3089 (U. S.); on the same 

 mountain but without number or indication of locality or altitude, 

 April, 1S99, C. Sapper (U. S.). 



A characteristic and probably local species. 



E. (§ Eximbricata) choricephalum, spec, nov., herbaceum 

 perenne erectum 3-7 dm. altum; radice e fibris longis numerosis 

 subsimplicibus nigrescentibus composita; caule pubescente gracili 

 basin versus simplici superne laxe paniculatim ramoso; foliis sub- 

 orbiculari-ovatis acuminatis grosse crenatis (dentibus 1.5-4 mm. 

 altis 3-8 mm. basi latis) basi late cordatis ad insertionem petioli 

 acuminatis membranaceis utrinque viridibus supra subglabris vel 

 sparse hirtellis (pilis saepius adpressis) subtus vix pallidioribus in 

 nervis venisque hirtellis ima a basi 3-nerviis 3-7,5 cm. longis 2.5-6 cm. 

 latis; petiolo 1.5-3 cm. longo; panicula laxissima 4-6 dm. longa 2-3 

 dm. diametro foliaceo-bracteata; bracteolis lanceolatis parvis vel 

 minimis; pCdicellis filiformibus pubescentibus 8-18 mm. longis; capitu- 

 lis dissitis ca. 34-floris 6.5 mm. altis 6 mm. diametro cymoso-dispositis ; 

 involucri campanulati squamis subaequalibus (una vel duabus multo 

 minoribus) oblongo- vel lanceolato-linearibus acutis 4.5 mm. longis, 

 exterioribus dorso villosulis, interioribus longiuscule ciliatis aliter 

 subglabris saepius 2-costatis et 3-nerviis; coroUis albis 3-4 mm. longis, 

 tubo proprio gracili glabro 1.6-2 mm. longo, faucibus turbinato- 

 subcylindricis 1.2-1.8 mm. longis extus sparse hirtis, dentibus limbi 5 

 (vel rariter 4) 0.3 mm. longis deltoideis obtusiusculis intus papillosis 

 extus hirsutulis; antheris brevibus basi distincte sagittatis apice cum 

 appendice ovato-oblonga munitis; achaeniis nigris 1.5-2 mm. longis 

 in costis et etiam in faciebus hispidulis basi callosis apice cum disco 

 cupulato coronatis; pappi setis ca. 28 albis 4 mm. longis pauUo sca- 

 bratis. — E. grandidentatum, var. laxtflorum Gray in Pringle, PI. Mex. 

 [list of 1886] on first (unnumbered) page, as a name only. E. guada- 

 lupense Graj^ ex Wats. Proc. Am. Acad. xxii. 421 (1887), not Spreng. — 

 Chihuahua: southwestern part, Aug.-Nov., 1885, Palmer, no. 276; 

 shaded ravines, Mapula Mts., 30 Oct., 1886, Pringle, no. 747. Dur- 

 ANGO: Pcdvier, no. 857. Jalisco: shaded hillsides, Chapala, 1886, 

 Palmer, no 712; ravines near Guadalajara, 14 Oct. 1903, Pringle, no. 

 11,924 (type Gr.). Michoacan: oak woods near Uruapan, alt. 1464 

 m., Pringle, no. 10,099. Morelos: barranca near Cuernavaca, alt. 

 1982 m., 23 Nov. 1902, Pringle, no. 11342. Vera Cruz: Orizaba, 

 Botteri, no. 494. 



