32 AN INTRODUCTION 



in the plantce bicornes*, viz. in Ledum, Azalea, An- 

 dromeda, Clethra, Erica, Myrsine, Memecylon, 

 Santalum, Vaccinium, Arbutus, Royena, Diospyros, 

 Melastoma, and Pyrola; they are separate also in 

 Cissus and Aloe. In polypetalous flowers, the sta- 

 mina are usually separate from the petals : but this 

 also has a few exceptions ; for in the Statice, which 

 is pentapetalous, the filaments are inserted in the 

 claws of the petals ; in Melanthium, which is hexa- 

 petalous, they are inserted in the petals ; and in the 

 Lychnis, which is pentapetalous, as also in Saponaria, 

 Cucubalus, Silene and Agrostemma, which were for- 

 merly ranged with the Lychnis, every other stamen 

 is fastened to the claws of the petals. 



The ANTHERAE are commonly placed on the tops 

 of the filaments : but they stick close to the sides of 

 the filaments in Paris and Asarum, and adhere to the 

 stigma without filaments in Aristolochia, 



The singularities of the NECTARIUM have been 

 already mentioned in Chap. 12. 



The PJSTILLUM is commonly placed within the 

 Antherae : but in Arum there is this singularity, that 

 the receptacle runs out into a club, the base of which 

 is occupied by the pistilla, and the upper part by the 

 stamina ; so that here the pistilla stand on the out- 

 side of and surround the stamina ; and in the Calla 

 of Ethiopia these parts are disposed in the same man- 

 ner. The Rumex is singular in the insertion of the 

 stamina. 



The STYLE is commonly placed on the top of the 

 germen : some exceptions to this have been given in 

 Chap. 14. to these may be added Passerina, Gnidia, 

 Struthia, and Stellaria. 



The PERICARPIUM is generally shut : but in Re- 

 seda and Datisca it is , always open ; in Parnassia 

 it gapes at the time of flowering, and closes after- 

 wards. 



* Having two horns ; these plants have been so called from 

 their bifid Antherae. 



4* 



