TABLE OF LINNtEAN ARTIFICIAL CLASSES AND ORDERS. 



Div. I. Plants ■mth conspicuous flowers. Phanerogamia. 



A. Stamens, and pistils in the same flower. 



* Stamens free and equal. 



Cl. 1. MoNANDRiA, with 1 Stamen. 6. Hexandria, with 6 stamens. 



2. DiANDRiA, 2 stamens. 7. Heptandria, 7 stamens. 



3. Triandria, 3 stamens. 8. Octandria, 8 stamens. 



4. Tetrandria, 4 stamens. 9. Enneandria, 9 stamens. 



5. Pentandria, 5 stamens. 10. D^candria, 10 stamens 

 *11. Dodecandria, 11 to 19 stamens. 



12. IcosANDRiA, 20 or more stamens, perigynous or inserted on the calyx. 



13. PoLYANDRiA, 20 or more stamens, hypogynous or inserted on the re- 



ceptacle. 

 Orders. — In the first 13 classes the orders depend solely on the number of 

 pistils, and they are r\a,med—Monog]/nia 1. Digynia 2. Trigynia 3. Tetragynia 

 4. Pentagynia 5. Hexagynia 6. Heptagynia 7. Octagynia 8. Enneagynia 9. 

 Decagynia 10. Polygynia more than 10. 



** Stamens free, unequal. 



14. DiDYNAMiA, 4 stamens, 2 longer than the others. 



Two orders. 1. Gymnospermia, the seeds naked. 2. Angiospermia, the seeds 

 enclosed in a pericarp. 



15. Tetradynamia, 6 stamens, 4 longer than the others. 



Two orders. 1. (SiZicwZosa, fruit a silicle or pouch. 2. Siliquosa, iroii z.\oisQ 

 pod or silique. 



*** Filaments united. 



16. Monadelphia, filaments forming 1 set. 



17. DiADELPHiA. filaments forming 2 sets. 



*18; PoLYADELFiiiA, fikmcnts formin:^ m re than 2 sets. 

 Orders depend upon the number of stamens,, and have the £a.rae names as the 

 first 13 classes. 



**** Anthers united. 



19. Syngenesia, 5 stamens, the anthers united (compound flowers.) 

 Five orders. 1. Polygamia JEqualis. florets all perfect. 2. P. Superflua, 



disk florets perfect, rays pistilliferous. 3. P. Frustranea, disk perfect, rays neutral. 

 4. P. Necessaria, disk with stamens, rays with a pistil. 5. P. Segregate, with 

 a perianth to each floret. 



***** Anthers united to the pistil. 



20. Gynandria. 



Orders named according to the number of stamens, as Monandria, <fec. 

 B. Stamens and Pistils in different flowers. 



21. MoNCECiA, stamens and pistils on the same individuals. 



22. DiCECiA, stamens and pistils on diflferent individuals. 



Orders named according to the number of stamens, except where there is a 

 union of the filaments; then named Monadelphia, &c. 



*23. Polygamia, perfect and unisexual flowers either on the same or dif- 

 ferent individuals. 



Three orders. Monoecia, Dioecia, Trioecia. 



Div. II. Plants with inconspicuous flowers. Cryptogamia. 

 24. Cryptogamia, having neither stamens nor pistils. 

 Six orders, viz., 1. Filices. 2. Musd. 3. Algcs. 4. Fungi. 5. Hepaticce. 

 6. Lichenes. ^|^ 



* The classes marked thus, viz. Dodecandria, Polyadelphia, and Polygamia, have 

 been discarded by most American botanists. • They comprise, at least in the States to 

 which this work is principally devoted, but few genera, and these, being variable in 

 their ch^cters, can be very well distributed among the other classes 



