THE CLASSIFICATION OF PLANTS. 



411 



Order 4. Tetragynia, those with four styles, as the Holly, 

 Sagina, Radiola, &c. 



Order 5. Pentagynia, those with five styles, as Flax, Helle- 

 bore, Columbine, Larkspur, Monkshood, &c. {Fig. 

 427.) 



Order 6. Hexagynia, those with six styles, as Actinocarpus, 

 Butomus, Drosera, &c. {Fig. 577.) 



Order 7. Heptagi,nia, those with seven styles. No examples 

 among British Plants. 



Order 8. Octogynia, those with eight styles. No examples 

 among British Plants. 



Order 9. Enneagynia, those with nine styles. No examples 

 among British Plants. 



Order 10. Decagynia, those with ten styles. No examples 

 among British Plants. 



Order 11. Dodecagynia, those with eleven or twelve styles, as in 

 the common House-leek. 



Order 12. Polygynia, those with more than twelve styles, as in 

 the Rose, Buttercup, Strawberry, Anemone, Cle- 

 matis, &c. {Fig. 590.) 



The 14th Class, Didynamia, is divided into two orders, the 

 characters of which are derived from the structure of the seed- 

 vessel, namely: 



Order 1. Gymnospermia. This term is derived from the Greek, 

 and signifies naked seeds, because the single-seeded 

 fruits were mistaken by Linnaeus for seeds. This 

 order includes those plants in which the fruit con- 

 sists of achania, of which there are commonly 

 four, as in the Dead Nettle, and other Labiate Plants. 

 {Fig. 594, 595.) 



Order 2. Angiospermia. This includes those plants in which 

 numerous seeds are enclosed in an evident seed- 

 vessel or pericarp, which is commonly two-celled, 

 as in the Foxglove, Snapdragon, &c. {Figs. 611 

 & 693). The name is derived from the Greek, and 

 means seeds in a vessel. 

 The 15th Class, Tetradynamia, is also divided into two 



orders, which are in like manner characterised by the fruit : — 



Order 1. Siliculosa; the fruit a Silicula or short pod, as in the 

 Shepherd's Purse, Sea Kale, Scurvy-grass, &c. 

 {Fig. 864.) 



Order 2. Siliquosa ; the fruit a Siliqua or long pod, as in Mus- 

 tard, Stock, Wallflower, &c. {Fig. 666.) 



The orders of the 16th, 17th, and 18th Classes are distin- 

 guished by the number of stamens, and have names, therefore, 



