ROBINSON. — ON CERTAIN COMPOSITAE. 209 



tellis, indumento e pilis multicellularibus tenuissimis plus minusve 

 inter se implexis composito ; foliis alternis subdeltoideo-ovatis acutis 

 nee acuminatis basi subtruncatis glandulari-denticulatis (glandulis inter 

 se 3-5 mm. distantibus) supra tenuiter sed densiuscule pubescentibus 

 subtus molliter tomentosis canescentibus, lamina 5-6 cm. longis 3-3.5 

 cm. latis paulo supra basin 3-nervata; petiolo cuneato-alato ca. 1.2 cm. 

 longo ad insertionem laminae usque ad 7 mm. latitudine expanse ; 

 inflorescentia planiuscula multicapitulata, bracteis lanceolatis subses- 

 silibus ; capitulis radiatis 7 mm. altis, disco ca. 7 mm. diametro ; in- 

 volucri campanulati squamis sub-triseriatim imbricatis arete appressis 

 ovato-oblongis obtusis sordide lanoso-tomentosis ; flosculis radialibus 

 ca. 6 Q , ligulis late oblongis vel ellipticis apice brevissime 3-dentatis 5-7 

 mm. longis 3-3.6 mm. latis laete flavis, tubo ea. 1.5 mm. longo plus 

 minusve piloso ; flosculis disci ca. 25 $ , corollis flavidis, tubo 1.5 mm. 

 longo faueibus subeylindricis 2 mm. longis, limbi dentibus 5 breviter 

 triangularibus ; acliaeniis immaturis prismaticis 2.7 mm. longis omniuo 

 ealvis glabriuseulis. — ■ On banks of the Maehangara River, near Quito, 

 Ecuador, 2750 m. altitude, 21 January, 1856 ; W. Jameson, no. 162 

 (type, in Gray Herb.). From the original 31. Jlaverioides HBK. of 

 Venezuela, as well as from the recent M. Jelskii Hieron. of Peru, the 

 present species differs in its many-flowered heads, the disk-flowers 

 being about 25, while in M. Jlaverioides they are said to be 5-10 and 

 in M. Jelskii they are 6-7. Furthermore, the form of the leaf in the 

 Ecuadorean plant is very different from either of the other species, the 

 blade being more nearly deltoid with a truncate base somewhat sharply 

 distinguishable from the cuneately winged petiole. 



Montanoa tehuacana, sp. nov., frutieosa vel arboreseens 3-5 m. 

 alta ramosa ; ramis plerisque oppositis divergentibus areuato-adscen- 

 dentibus foliosis leviter striatis tenuissime puberulis juventate brunneis 

 deinde griseis ; foliis oppositis, supra pallide viridibus scabris et cum 

 pilis brevissimis basi incrassatis munitis, subtus caneseenti-tomentellis 

 reticulato-venosis, inferioribus 2 dm. longis 1.6 dm. latis patente trilo- 

 batis, lobis lateralibus latis crenato-angulatis, lobo terminali variabili 

 vel obtuso vel acuto vel etiam acuminato in eodem specimine, petiolo 

 usque ad 8 cm. longo in parte superiori euneato-alato ; foliis superiori- 

 bus, i. e. ramulorum floriferum obovato-oblongis firmiusculis obtusis 

 supra rugosis ca. 4 cm. longis ca. 1.5 cm. latis obsolete erenulato- 

 serratis basi brevissime petiolatis et (supra petiolum) eordato-biau- 

 rieulatis, aurieulis rotundatis ; capitulis laxe corymbosis graeiliter 

 pedicellatis ea. 3 cm. diametro (ligulis inclusis) ; involucri squamis 

 ovato-lanceolatis anthesi ca. 6 mm. longis griseo-tomentellis ; paleis 

 a basi late ovata membranacea pallida in apicem longum spinosum 



VOL. XL VII. — 14 



