— 250 



Milium, 



Mœhringia, 



Molinia, 



Molopospermiim, 



Monotropa, 



Monotropeîîe, 



Moiitia, 



Morus, 



Mulgediiim, 



Miiscari, 



MyagTum, 



Myosotis, 



Myricaria, 



Myriophyllum, 



Myrrhis, 



Narcissus, 



Nardus, 



Nastiirtium, 



Neottia, 



Nepeta, 



Neslia, 



Nicotiana, 



Nigella, 



Nigritella, 



Nuphar, 



Nymphœa, 



Nymphaîaceœ, 



Ocymiim, 



Œnanthe, 



Œnothera, 



Oleaceœ, 



Onagrarieae, 



Onobrychis, 



Ononis, 



Onorpodum, 



Onosma, 



Ophrys, 



Opuntia, 



Orchideœ, 



Orchis, 



Origaniim, 



Orlaya, 



Ornithogalum, 



Orobanehe, 



Orobancheae, 



Orobus, 



Oxalidese, 



Oxalis, 



Oxyria, , 



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