328 PRACTICAL BOTANY. 



2. Ciiidoscolus, Pohl. Spurge-Nettle. Species: 



Cnidoscolus stimulosa, Gray. 

 {Tread- Softly.) 



3. Acahjpha, L. Three-seeded Mercury. Species 3. 



4. Tragia, Plum. Species 3. 



5. StilUngia^ Garden. Species : S. sglvatica, L. 



6. Croton^ L. Species 3. 



7. Crotonopsis, Mx. Species : C. li?iearis, Mx. 



8. Phyllaiithus, L. Species : Ph. Carolinensis, Walt. 



9. Fachysandra, Mx. Species : P. procumbens, Mx. 



ORDER cm. 



empetrace.c, or crowberries. 

 Genera : 



1. Empetram^ Tourn. Crowberry. Species: 



Empetrum nigrum, L. Black Crowberry. 



2. Corema, Don. Species : Corenia Conradii, Torr. 



ORDER CIV. 



URTICACE^, OR NETTLEWORTS. 



Sub-order I. — Ulmaceoe. Elmworts. 

 Genera : 



1. JJlmus, Jj. Elm. Species A:. 



2. Planer a, (amoi. Planer- Tree. Species: 



PI, aquatica, Gmel. 



3. Celtis, Tourn. Nettle-Tree. Hackberry. Species 2. 



Sub-order II. — Artocarj^eoi. Artocarps. 

 G ENus : 



4. MoruSf Tourn. IMulberry. Species 2. 



Sub-order III. — Z/rticece. The true Nettles. 



5. LPrtica, Tourn. Nettle. Sj^ecies 4. 



6. Eaportea, Gaud. Wood-Nettle. Sp>ecies : 



Laportea Canadensis^ Gaud. 



