Compositm.] MEXICO. 297 



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

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

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

 striatis extemis 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, styli ramis elongatis longe exsertis tenuibus. 



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

 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 seta? 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-hemispbserici 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 18 (not 10) 

 flowers in each capitulum. 



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

 Specimens very imperfect. 



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



3. E. ovalifiorum ,• 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. divergensi Less. 



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

 acuminatis serratis tenuibus siccitate nigricantibus sublonge petiolatis, petiolisgracilibus, 

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

 catis pubescentibus striatis sub 15-floris. 



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

 lucres are slightly downy. 



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

 submembranaceis serratis supra glabriusculis subtus ad costam prsecipue lanuginosis, 

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



2v 



