C0NSPEGTU8. 333 



3. Frasera, Walt. American Columbo. Species: 



Frasera CaroUnensis, Walt. 



4. Salenia, Borkh. Spurred Gentian. Species: 



Salenia deflexa, Griseb. 



5. Gentiana, L. Gentian. Species 9. 



6. jBartonia, Muhl. Species 2. 



1. Obolaria, L. Species : Obolaria Virginica, L. 



8. Menyanthes, Tourn. Buckbean. Species : 



Menyanthes trifoliata, L. 



9. Itimnanthemum, Gmel. Floating Heart. Species: 



Limnanthemum lacunosum, Griseb. 



ORDER LXXXrV. 



APOCTlirACE^, OE DOGBANES. 



Geneea : 



1. Amsonia, Walt. Species : 



Amsonia TabertKBmontana, Walt. 



2. Forsteronia, Meyer. Species: 



Forsteronia difformis, A. D. C. 



3. Apocynum, Tourn. Dogbane. Indian Hemp. Species 2. 



ORDER LXXXV. 



ASCLEPIADACE^, OE ASCLEPIADS. 



Gekeea : 



1. Asdepias, L. Milkweed. Silkweed. Species 14. 



2. Acerates, Ell. Green Milkweed. Species 2. 



3. Ensknia, Nutt. Species : Ensknia albida, Nutt. 



4. Gonohbue, Mx. Species 2. 



5. Feriploca, L. Species: Periploca Grceca, L. 



ORDER IjXXXVI. 



oleace^, oe olives. 

 Geneea : 



1. Idgustrum, Tourn. Privet. Species : 



Ligustrum vulgare, L. 



