Eupatorieae novae Americanae. 39 



Rio Blanco, Jalisco, Mexico, Palmer, no, 537 (type, in hb. Gr.); on 

 dry porphyritic hills near Guadalajara, Pringle. no. 1815: Sierra de San 

 Esteban, Pringle, nos. 9840, 11480. This species is readily distinguished 

 from the other by its narrow alternate leaves an different inflorescence. 



2. Fleischmannia Langlassei Robs., 1. c. p. 273. 



Suffruticosa decumbens plus minusve ramosa 2 dm vel ultra alta; 

 caulibus teretibus griseo-brunneis, ramulis leviter angulatis infra glabratis 

 supra glanduloso-pilosis foliosis; foliis alternis graciliter petiolatis ovato- 

 lanceolatis inciso-serratis vel etiam profunde trilobatis tenuibus 1—2.5 cm 

 longis 5 — 12 mm latis utrinque viridibus subconcoloribus glabratis. petiolo 

 5— 14 mm longo juventate glanduloso-pilosiusculo maturitate omnino gla- 

 brato; capitibus multifloris longissime •pedunculatis, pedunculis 1 — 4 in 

 apicibus ramorum dispositis gracilibus plus minusve flexuosis obscure 

 glanduloso-pilosiusculis vel in maturitate glabris; involucro turbinato- 

 campanulato 8 — 14 mm diametro squamis lanceolato-linearibus acutissimis 

 striatis valde inaequalibus multiseriatim imbricatis glaberrimis purpuras- 

 centibus; receptaculo leviter convexo nudo; corollis albidis anguste tubu- 

 losis glabris 4,5 mm longis sub limbo brevissimo erecto 5-dentato saepe 

 leviter constricto; styli ramis longe exsertis conspicuis purpureo-roseis: 

 achaeniis linearibus in angulis 5 sursum hispidis 1,7 mm longis basi 

 -callosis, setis pappi 5 — 6 purpureis capillaribus sed flrmiusculis 4 mm longis. 



Moist rocks, Arroyo de Barabas, Michoacan or Guerrero, Mexico, alt. 

 1000 m, 11 March 1898. E. Langlasse. no. 27 (type, in hb. Gr.). Verna- 

 cular name „clavettilo" . In inflorescence, flowers, and achenes this species 

 is much like F. Schaffneri Gray, but it differs conspicuously in its chiefly 

 undivided very thin and completely glabrate leaves, as well as in its 

 glabrate petioles and peduncles. In F. Schaffneri the leaves, which are 

 of firm texture and somewhat grayish green with a fine permanent glan- 

 dular puberulence, are regularly cleft nearly to the base into three 

 linear lobes. 



3. Piptothrix aegiroides Robs., 1. c. p. 273. 



Erecta; caule 6 — 12 dm alto subtereti purpureofolioso simplici glaber- 

 rimo; foliis oppositis graciliter petiolatis ovato-deltoideis acuminatis serrato- 

 dentatis vel crenatis flrmiusculis utrinque subreticulatis supra viridibus 

 glabris subtus pallidioribus in nerviis 3 pubescentibus 6 cm longis 5 cm 

 latis, petiolo purpureo supra subsulcato 1.5 — 3 cm longo; capitulis ca. 

 20-floris numerosissimis in corymbo planiusculo dispositis, pedicellis 5 mm 

 longis bracteolatis glabris; involucri campanulati squamis ca. 12 sub- 

 aequalibus sub-biseriatim imbricatis oblongis viridibus vel apice obtuso 

 eroso purpurascentibus 3 mm longis; receptaculo paleaceo. paleis lineari- 

 bus obtusis; corollis albis tubulosis glabris tubo proprio gracili saepe 

 curvato ca. 1.3 mm longo in fauces longos subcylindricos leviter grada- 

 timque ampliato, dentibus limbi ovato-oblongis obtusis erectis vel plus 

 minusve patentibus; antheris apice longe appendiculatis basi rotundatis; 

 filamentis glabris; acheniis atrofuscis prismaticis valde 5-costatis glabris 

 saepius leviter curvatis basi albocallosis 1,7 mm longis; pappi setis 



