OF NORTH AMERICA. 91^ 



give a ]Mono<Traph of 32 Species at least, while 

 our Autliors liave only 7 or 8 ; but liosc and 

 Louduii have noticed '27 Nortli American Sp. 

 while Wildenow and Persoon had only 10. 

 However I have but a dozen Sp. in my Herba- 

 rium often w ithout llowers or fruits, and I must 

 delay this labor ; w hen 1 w ill easily prove that 

 tliis extensive (J onus must be divided into 5 

 Genera at least, and I am now going to estab- 

 lish them. 



72J). Fraxinus Raf. all the Species with 

 naked ilowers, without calix as in Nudilus, 2 

 stamens, and Iruit a winged samare. Leaves 

 pinnate, flowers paniculate pob/^ainous. 



730. LEPTALIX llaf. Those dilfcring by 

 a small calix 4dentate &.c. Such as Fr. earo- 

 linlana, aeuniinata, pubescens, ju^IandlJoUa 

 and many other American Sp. but Bosc has not 

 noticed this important character. 



731. ORNAiNTHES Raf. 1815. Ornus P. 

 Pursh, B. 10. Sec. Unite ditferent by having 

 not only a calix, but also a corolla of 1 petals 

 as in Chionanthus . . Ornus being the root of 

 many names I changed it to Oiinantuks mean- 

 ing the flowering Ash : 3 Sp. at least O. rotun- 

 difolia, mannifera and Americana. 



732. APLILIA Raf Flowers and fruits to 

 be examined and described, leaves simple. 

 Probably more than a subgenus. Tw o Sp. at 

 least. A macrophyla and laciniata, the Fr. 

 simplicifolia of late Authors. 



733. SAMARPSES Raf. A minute triden- 

 tate calix, stamens 3 t Fruit a peculiar samare 

 obovate with 3 wings like Ilalesia, seed trian- 

 gular. Leaves jnnnate — This must constitute 

 a very peculiar genus, the llowers must be bet- 

 ter described. 



734. Saiwarpses triptera Raf Fraxinus do 



