THE FLOEA: 



SELECTIONS PROM THE NATIVE AND CULTIVATED T^LANTS 

 OF THE UNITED STATES. 



l)mgned Q^ first exercises in Analytical Botany. ^f 



Explanations,— The Tables in this work are designed to be complete^ that is, each Ordinal 

 Table includes all the genera belonging to that order known within the limits of the Flora {i. A, the 

 States east of the Rocky Mountains); and each Generic Table includes, in like manner, all its 

 known species. The numbers annexed to the genera'in the Ordinal Tfibles, refer to the descrip- 

 tions im mediately following. If no number be annexedithe pupil will understand that that genus 

 is not farther noticed. 



r;->HORT I. 



THE POLYPBTALOUS BXOGENS. 



Essential Character. — "Flowering Plants (Ph^enogamia), 

 with their stems growing by additions to their outside in 

 'layers (Exo6ens), their seeds inclosed in a seed-vessel or peri- 

 carp (Angiospeems), their flowers with a double perianth and 

 their petals distinct (Poltpetal^). (But to this last condition 

 there are many exceptions.) 



Order I. EANUNCtJLACEJE. The Crowfoots, 



•* ■ ■ ^ 



Herbs., rarely shrubs, witli a colorless, acrid juice, with 

 leames mostly alternate and much divided, without stipules ; 

 sepals 8-15, deciduous,' distinct, and colored when apetalous; 

 petals 3-15, distinct, often deformed or contracted or wanting ; 

 stamens oo, distinct, hypogynous ; 

 pistils 00 (rarely 1 or few), distinct, becoming in. 

 fruit either achenia, follicles, or berries. 



