GEOGRAPHICAL AND SYSTEMATIC 



BOTANY. 



THE consideration that the greater number of literary 

 productions in the province of Systematic Botany are 

 connected with the working out of individual local floras, 

 and ought therefore to have been noticed in the preceding 

 botanico-geographical Annual Reports, has convinced the 

 author of them, that by altering the arrangement of the 

 matter, with an appropriate limitation of the descriptive 

 notices, Systematic botany also may be made to enter into 

 these notices, without the allotted space being exceeded. 

 The year 1845 has moreover proved comparatively poor in 

 botanico-geographical results, so that the present period 

 appears appropriate for a first attempt at enlarging the 

 botanical Annual Reports in correspondence with this view. 

 Hence by comprising, in combination with those upon 

 Vegetable Physiology, the entire domain of Botany, they 

 will now obtain a completeness corresponding to that of 

 the Zoological Reports, and, as I hope, will acquire more 

 practical utility. An important limitation will, however, 

 still exist in the Botanical Reports, viz. that both the 

 descriptions of the plants, as also the notices of individual 

 species of genera already known, are excluded from the 

 sketch given of the systematic works ; not only, however, 

 does want of space compel us to omit these considera- 

 tions, but it would also be superfluous to repeat here 

 what is annually done in so admirable a manner in several 

 botanical periodicals and repertories. 



27 



