MR. BUKBURT ON THE BOTANY OF MADEIRA. 21 



Obs, — The niiiuber of species of flowering plants peculiar to 

 Madeira is stated* at 85 ; but this number may probably be rather 

 too high ; at least, the distinctness of seA^eral of Mr. Lowe's new 

 species appears doubtful. In fact, in all estimates of botanical 

 statistics, w^e are met at every step by the difficulty of deciding 

 what are distinct species. The differences of opinion among emi- 

 nent botanists on this point, and the want of anything like a fixed 

 rule, throw an uncei^ainty upon all numerical comparisons of the 

 floras of different countries. 



IL Plants common to Madeira and the Canaries, 



AND CONFINED TO THEM. 



Ch'iranthits mutalilis. 



Hi/periciim Jloribundum^ 



II, gla nd ulosxim , 



Geran ium an em onifo Uum, 



Shamnus gl<indulomis , 



Celastrus cassinoides. 



Phyllis Nohlaj L. 



Clethra arhm^ea (found in the Canaries, according to Von Buch). 



Glohularia lonfjifolia^ Soland, 

 Lavandula pinnata^ L. 

 Teucrium Tieteropliyllum. 

 Micromeria varia, Benth. 

 Cedronella triphyllay Benth. 

 Laurus Canariensis, AVebb and Berth. 

 L, (Phcehe) Barbusano, 

 L, {Oreodapline) foetens. 

 Eupliorbia piscatoria, 

 Carloicitzia salicifolia, IMoench. 



III. Plants common to Madeira and Azores, not found in 



Canaries. 



VacciniumpadifoUum, Sm. (= V, Maderense, DC.) 

 Ilex Per ado, Soland. (In the Azores, according to Watson, in 

 ' Hook. Lond. Journ.' vol. iii. The Ilex Perado of A^on Buch's 

 list of Canary plants is L Canariemis, AVebb and Berth.) 

 Melanoselinum decipiens^ Hoftm. 



* Hook., Lond. Journ. Bot. vol. vi. p. 126. 



