334 DIDYNAMIA. 



7. Polijgynia. An order for the most part natural, com- 

 prehending some fine exotic trees, as Dillenia, Exot. 

 Bot. t. 2, 3, 92 and 93 ; Liriodendron, the Tulip- 

 tree ; the noble Magfiolia, &c. ; a tribe concerning 

 whose genera our periodical writers are falling into 

 great mistakes. To these succeed a fiimily of plants, 

 cither herbaceous or climbing, of great elegance, but 

 of acrid and dangerous qualities, as Anemone, in a 

 single state the most lovely, in a double one the most 

 splendid, ornament of our parterres in the spring ; 

 Atragena and Clematis, so graceful. for bowers ; Tha- 

 lictrum, Adonis, Ranmiculus, Trollius, Helleborus and 

 Caltha, all conspicuous in our gardens or meadows, 

 which, with a few less familiar, close this class. 



Nothing can be more injudicious than uniting these 

 two last classes, as some inexperienced authors have 

 done. They are immutably distinct in nature and 

 characters, whether we call the part which immedi- 

 ately bears the stamens in the Icosandria a calyx, with 

 most botanists, or a receptacle with Mr, Salisbury in 

 the 8th vol. of the Linnaean Society's Transactions, 

 where, among many things which I wish had been 

 omitted, are some good remarks concerning the dis- 

 tinction made between calyx and corolla. This the 

 writer in question considers as decided in doubtful 

 cases by the latter sometimes bearing the stamens, 

 which the former, in his opinion, never really does. 



Class 14. Didynamia. Stamens 2 long and 2 short. 

 Orders 2, each on the whole very natural. 



1. Gymnospermia. Seeds naked, in the bottora of the 

 calyx, 4, except in Phryma, which has a solitary 



