OF ARTS AND SCIENCES. 425 



lata rotundata vel truncata trinervatis, petiolo gracili prorsus nutlo ; 

 capitulis (mediocribus) laxe paniculato-cymosis ; involucri bracteis 

 subovatis brevibus ; paleis receptaculi fere glabris parum mucrouatis 

 demum truncatis ; ligulis 5 vix semijiollicar ibus albis. — Rio Blanco, 

 on sides of barranca ; September. (599.) 



MoNTANOA (Eriocoma) ? AVith the habit of the elder, 10 to 



12 feet high, the stems with large pith. Chapala, in waste places and 

 on wooded hillsides. (714.) — From the habitat this is probably one 

 of Koch's species from " Giiadahijara " (Wochenschrift. 7. 406, &c.), 

 perhaps M. triloba^ as it is near 31. xantkiifoUa, and not that species. 



losTEPHANE HETEROPHYLLA, Hemsl. 1. c. 168. Rio Blanco, in 

 damp shaded ravines ; August. (327.) 



AsPiLiA ALBiFLORA, Gray, n. sp. Multicaulis e radice perenni, 

 spithamfea, diffusa, striguloso-hispidula ; foliis spathulatis subintegerri- 

 mis (1-o-pollicaribus) basi in petiolum attenuatis ; pedunculis solitariis 

 monoceplialis folia baud fequantibus ; involucri bracteis exterioribus 

 5-6 lineari-oblongis subfoliaceis (fere semipollicaribus) interiores toti- 

 dem membranaceas superantibus ; ligulis 4-6 linearibus semipollicari- 

 bus albis; acheniis disci pyriformibus parum compressis hirsutis basi 

 utrinque callo carnoso rotundo adnato instructis ; pappo cupulato 

 multilaciniato nunc 1-2-aristellato. — Rio Blanco, on shaded hillsides ; 

 August. (.332.) A congener of ^. iT/ex;Va?ia, but peculiai'. 



AsPiLiA ANGUSTIFOLIA, Gray, n. sp. Scabrido-hispidula ; caule 4- 

 pedali paniculato-ramoso ; ramis gracilibus patentibus ; foliis linearibus 

 integerrimis (1-2-pollicaribus) utrinque acutis brevipetiolatis supra his- 

 pidulis subtus subcanescentibus ; capitulis subcymosis longiuscule pe- 

 duuculatis parvulis ; involucro brevicampanulato (lin. 3 longo), bracteis 

 ovatis concavis plerumque obtusis imbricatis, exterioribus brevioribus 

 interioribus fere conformibus ; ligulis 7-8 oblongis flavis ; acheniis 

 clavato-oblongis hispidulis basi utrinque calliferis ; pappo cupulato 

 lacero. — Tequila, at base of hills, among underbrush. (361.) 



Zexmenia podocephala. Gray, Syn. FI. 1^. 286, probably. Rio 

 Blanco, in ravines ; June. (50.) 



Zexmenia (Otopappus) Tequilana. Fruticosa, orgyalis, sca- 

 brido-puberula, subcinerea ; ramis elongatis ad apicem usque a^qualiter 

 foliatis ; foliis e basi rotundata parumve subcordata ovato-lanceolatis 

 acuminatis denticulatis juxta basim 3-5-nerviis venulosis (4-5-2i()llicari- 

 bus) brevipetiolatis ; capitulis in pedunculis axillaribus et terminali- 

 bus paucis laxe cymosis brevipedicellatis hemisphajricis (lin. 3-4 latis) ; 

 involucri bracteis parvulis gradatim imbricatis oblongis adpressis cum 

 apice obtuso parum patulo ; ligulis plurimis discum vix superantibus ; 



