1853.] Linnean Society. 223 



imply. For, in the first place, many families and genera, which are 

 strikingly characteristic of the Argentine region, are but scantily 

 represented in Europe. Such, in particular, are the families of So- 

 lane<E, Verbenaceee, AmaranthacecE, and perhaps MalvacecB. Of the 

 genus Solanum, for instance, many more species grow wild within a 

 short walk of Buenos Ayres than in the whole of Europe. The 

 genus Verbena, again, so insignificant in Europe, plays a conspicuous 

 part in the Argentine vegetation by the number of its species, the 

 profusion in which they grow, and their general brilliancy and 

 beauty. Secondly, although the genera altogether wanting in 

 Europe may not form numerically a very large proportion of the 

 Argentine Flora, yet several of them are very conspicuous, and play 

 an important part in that Flora by the number of species or of indi- 

 viduals : such are Pontederia, Gomphrena, Teleianthera, Jussicea, 

 Nicotiana, Petunia, Nierembergia, and others. Thirdly, several 

 families which most abound in Europe are nearly wanting, or but 

 very feebly represented (if we exclude naturalized plants) on the 

 shores of the Plata : such are CrucifercB, CaryopliyllecB, Umbellifercc 

 (excepting Eryngiuni), BoraginecE, Dipsacece, Cichoraceae and Cy- 

 nare(E. In the collections in his possession from Buenos Ayres and 

 the Banda Oriental, Mr. Bunbury finds 14 families and 102 genera 

 which are not European. The families are CommelynacecE, Pontede- 

 racece, Bromeliacea, Marantacece, Calycereee, Bignoniacece, Passiflores, 

 Loaseee, Begoniacece, Buttneriacea, MalpighiaceeB, Sapindacees, Tro- 

 pceolecR and Melastomacete. The genera (adopting Endlicher's 

 'Genera Plantarum' as the guide) are Paspalum, Stenotaphrum , 

 Cenchrus, Aristida, Chascolytrum, Pappophorum, Eustachys, Eleusine, 

 Androtrichum, Commelyna, Hydrocleis, Pontederia, Herreria, Udora, 

 Sisyrinchium, Cypella, Alstrcemeria, Tillandsia, Oncidium, Canna, 

 Spathicarpa, Roubieva, Gomphrena, Teleianthera, Pupalia, Iresine, 

 Acicarpha, Boopis, Vernojiia, Stevia, Baccharis, Pterocaulon, HapJo- 

 pappus, Flaveria, Porophyllum, Leighia, Verbesina, Achyrocline, 

 Trixis, Mitracarpum, Cephalanthus , Asclepias, Gomphocarpns, Oxy- 

 petalum, Arauja, Philibertia, Schistogyne, Lantana, Calonyction, Ni- 

 cotiana, Nierembergia, Petunia, Jaborosa, Himeranthus, Cestrum, 

 Buddlea, Scoparia, Herpestes, Dicliptera, Bignonia, Argemone, Passi- 

 flora, Blumenbachia, Begonia ?, Pavonia, Sida, Abutilon, Buttneria, 

 Stigmaphyllum, Heteropterys, Paullinia, Croton, Phyllanthus, Schimis, 

 Chymocarpus, Jussicea, Heimia, Cuphea, Eugenia, Chcetogastra, Mi- 

 mosa, Desmanthus, Inga, CaUiandra, Acacia, Parkinsonia, Cassia, 

 Poinciana ? (perhaps introduced), Crotalaria, Indigo/era, Tephrosia, 

 Daubentonia, Desmodium, ^schynomene, Clitoria, Camptosema, Cana- 



