Topo<ira2)hical Botany of Scotland. 101 



very extensive flora, but only 543 plants arc given in 

 Topographical Botany. 



87. West Perth, ivith Claclcmanna^i. — This vice-county 

 has elevations of over 3800 feet, and has an interesting 

 flora; 615 plants have been noted. This and the three 

 following districts, viz., 88-89-90, contain the richest 

 Arctic-Alpine llora in Britain, among which are some of our 

 rarest plants. 



88. 3Iid Perth. — This is a most celebrated botanical 

 district, and comprises Ben Lawers, with a height of 3984 

 feet, but with its gigantic cairn, it claims an elevation of 

 4000 feet. There are also a number of other mountains 

 that rise considerably over 3000 feet above sea-level. 

 The number of plants recorded in this vice-county is 

 667. 



89. East Perth. — This Watsonian district contains some 

 high elevations, a number of them over 3000 feet, but the 

 highest appears to be Cairn Gowar, 3671 feet. The 

 number of phmts that have been noted is 599. This vice- 

 county comprises a smaller area than Mid Perth. 



Perthsliire as a County. — During 1882 Dr Buchanan 

 White published in the Scottish Naturalist a lisc of the 

 plants of the county of Perth, and the total he gives, 

 including sub-species, is 876 ; but v^e have not co-related 

 it with the artificial vice-counties by Mr Watson. 



90. Forfar. — This county may be considered the prin- 

 cipal field of George Don's work, and 801, the record of 

 its plant life, as given by Mr Watson, shows how well 

 it has been explored. No other Watsonian district 

 in Scotland has such a numerous list. The fringe of 

 mountains that forms the northern border of this county 

 has a number of elevations that vary from 3000 up to 

 3500 feet. 



91. Kincardine. — The greatest elevation in tliis county 

 appears to be about 2555 feet, so we may expect to find 

 some of the Arctic-Alpine plants absent. The area 

 covered by this county is small compared with some 

 others. The number of plants on record is 601. 



92. South Aberdeen. — With the exception of Westerness, 

 there is no other district in Scotland where such a number 

 of zones of vegetation are to be found as South Aberdeen, 



