INTRODUCTION TO BOTANY. Ixvii 



Gefi. Epilobium. Circaea. 



67. Salicariea:. Juss. 

 Ge7i. Lythrum. Peplis. 



68. RosaceceJ' Juss. (Class, Icosandria. Linn.) 

 Divided into these ti'ibes — 1. Drupacecc. Gen. Prunus, 



Cerasus. 2. Spiracere. Gen. Spireea. 3. Fragariacea:. 

 Potentilla, Fragaria, Geum, Rubus, Comarum. 4. Sangnis- 

 orhiecE. Poterium, Alcheniilla, &c. 5. Hosecc^ Gen. Rosa. 

 6. PomacecB. Gen. Crataegus, Mespilus, Pyrus. 



All the Rosaceae astringent, particularly the Fragariaceae. 

 The young fruits of the Pomaceae contain a good deal of 

 oxalic acid. The Drupaceae in their leaves, and kernels con- 

 tain a large quantity of prussic acid. Several of this tribe 

 aflPord a mild gum. 



69. Leguminosce^ Pea-tribe. Juss. 



Contains the papilionaceous, or diadelphous plants of the 

 British Flora, at least. Is a large, and very natural family. 

 Exhibits little uniformity in its properties. 



70. BJiamnecE. BR. Part of Juss. Rhamni. 

 Genus. Rhamnns. 



71. Celastrinecc. BR. Part of Juss. Rhamni. 

 Gen. Euonymus. 



72. AquifoUacccE. DC. Ilicincffi Ad. Brong. 

 Gen. Ilex. 



CLASS XV. 



Dicliny. [Par-t of Mon. cmd Dicecia. Linn) 



73. Euphorhiacecc. Juss, 



Gen. Buxus, Euphorbia, Mercurialis. 



The acrimony of this family resides in their milky juice. 



74. Urticece. Juss. And Celtidece. Richard. 



To the tribe Celtideae, of Richard, belongs Ulnius. The 

 true UrticciP, are — Gen. Parietaria, Urtica, Hiimulus. 



75. Salicinecv, Willow-tribe. Ricliard. 

 Gen. Salix. 



76. Betulinea;. Richard. 



Gen, Betula, Alnus. These agree with the Salicineae in 

 their astringcncy, and medicinal properties. 



' Gen. Agritnonia. 

 f2 



