Composite.] MEXICO. 297 



1. Phania? urenifolia ; herbacea glabra, foliis alternis grosse serratis petiolatis trifklis 

 v. pinnatim trisectis lobo terminali petiolato trifido segmentis obtusis, capitulis paucis 

 axillaribus longe pedunculatis subcorymbosis permultifloris (fere 100), involucri squamis 

 striatis externis paucis ovatis acutis, internis 40-50 lineari-acuminatis, corolla pappi 

 longitudine aequali perangusta lobis brevissimis obtusis, pappo brevissime coroniformi in 

 setas tenues rigidas 4-5 producto, sty li ramis elongatis longe exsertis tenuibus. 



We are extremely doubtful of this genus ; but the plant has so many points in common with Phania rnulti- 

 caulis, DC, that we, for the present, refer it to the same genus, from which it differs in many of its characters. 

 The scales of the involucre are very numerous ; the achenia and corolla exceedingly slender ; the setae of 

 the pappus slender, rigid, rough, and of a dark purple colour. 



1. Bolbostylis rigida ; fruticosa, ramis elongatis, foliis rigido-coriaceis ovatis acutis 

 sessilibus reticulatis supra nitidis scabris subtus albo-tomentosis superioribus minoribus 

 bracteiformibus, capitulis pedunculatis terminalibus axillaribusque subsolitariis, involucri 

 turbinato-bemisphaerici foliolis imbricatis, ext. late ovatis acutis, int. oblongis. 



Leaves 1£ to 2 inches long. Flowers large. Scales of the involucre blackish at the tips. Achenium 

 narrow, furrowed. Pappus of many slender setae slightly thickened below the point. 



2. B. hebecarpa. De Cand. Prod. 5. p. 138. 



Hab. Talisco. — This seems to agree with the plant thus named, except that there are about 13 (not 10) 

 flowers in each capitulum. 



1. Eupatorium glaberrimum. De Cand. Prod. 5. p. 144. 

 Specimens very imperfect. 



2. E. conyzoides. Fahl, Symb. 3. p. 96. De Cand. Prod. 5. p. 143. — j8. glabrius. 



3. E. ovalijlorwn ; fruticosum pubescens subvelutinum, foliis oppositis brevi-petiolatis 

 anguste ovatis acuminatis subcoriaceis 3-5-nerviis serratis, panicula trichotome composita, 

 involucri ovalis sub 23-flori squamis arete imbricatis ovatis obtusis striatis nitidis. 



The leaves are singularly harsh and rigid, but clothed, especially above, with a short and almost velvety 

 down. The involucres are almost exactly oval, contracted at the apex, and embracing tightly the florets. 

 It seems most nearly allied to E. divcrgens, Less. 



4. E. nigrescens ; fruticosum fere ubique glabrum, foliis oppositis ovato-deltoideis 

 acuminatis serratis tenuibus siccitate nigricantibus sublonge petiolatis, petiolis gracilibus, 

 corymbis polycephalis, involucri brevi-cylindracei squamis oblongis obtusis arete imbri- 

 catis pubescentibus striatis sub 15-floris. 



The old leaves arc glabrous, as are the stems and older branches ; the young leaves and pedicels and invo- 

 lucres are slightly downy. 



5. E. lasioncuron ; fruticosum, foliis patentibus sublonge petiolatis ovatis acuminatis 

 submembranaceis serratis supra glabriusculis subtus ad costam praecipue lanuginosis, 

 corymbis polycephalis, involucri patenti-campanulati foliolis glabriusculis laxis 1-2 externis 



2 p 



