324 ICOSANDRIA. 



might as well have been placed in the next class, 

 with which it agrees in natural order. 



3. Trigynia is chiefly occupied by Reseda, the Migno- 

 nette, t. 320, 321, and Euphorbia, t. 256,883, 

 &c., one of the best defined and most natural 

 genera, of which the punicea, Sm. Ic. Pict. t. 3, is 

 a splendid exotic species. 



4. Tetragyriutp in Schreber and Willdenow, consists 

 of CaUlgonum, a genus illustrated by L'Heritier in 

 the Transactions of Linn. Society, v. 1 ; and Apo- 

 nogeton, already mentioned,/;. 319. 



5. Pentagynia has Glinus, an insignificant genus; and 

 Blackwellia, a doubtful one. 



6. Dodecagynia is exemplified in Sempervivum, the 

 Houseleek, Engl. Bot. t. 1 320, whose styles vary 

 from twelve to eighteen or twenty. Sempervmum 

 sediforme, Jacq. Hort. Vlnd. t. SI, is a Sedum 

 with a superabundance of parts in the fructification. 

 Linnaeus confounded it with S. rupestre. 



CLASS 12. Icosandria. Stamens 20 or more, inserted 

 into the Calyx. Orders 3. 



1. Monogynia consists of fine trees, bearing for the 

 most part stone fruits, as the Peach, Plum, Cherry, 

 c., though the leaves and other parts are bitter, 

 acrid, and, as we have already mentioned, some- 

 times very dangerous, owing to a peculiar essential 

 oil, known by its bitter-almond flavour. See spe- 



