124 TRANSACTIONS AND PROCEEDINGS OF TUK [Sess. LXVI. 



The same breaking of summer is shown in the figures 

 relating to anemopliilous flowers which follow — 



Table IV. — Seasonal Distiibntioii of Anemopliilous Plants. 



We have divided Table IV. so as to show in what way 

 the deciduous trees are the first of anemopliilous plants to 

 flower, aquatic herbs the last, Clarke and Eobertson,* as 

 well as others, have pointed out how much more readily 

 the pollen may be borne from stamen to stigma on a leaf- 

 less tree than when leaves are present to obstruct ; and 

 they point out how the deciduous trees flower in the van 

 of others in North America as with us. The laws which 

 rule the flowering of aneraophilous plants are likely to be 

 found of general application in temperate regions. 



Summary and Conclusion. 



The Phanerogamic Flora of the Clova region contains 

 363 plants which maintain themselves under the present 

 conditions. More than a quarter of the whole do not 

 ascend the hills at all; about one-fifth pass to above 2500 

 feet. Species which are wind-fertilised, or have simple 

 flowers of the classes A and AB, grow proportionally more 

 numerous towards the hilltops. Blossoming, which begins 

 about the commencement of April, does not increase 

 regularly toward the height of sunnner, but species show 

 a tendency to delay until May is out ; between early and 



* " American Naturalist," xxvii. p. 769, and xxix. p. 97. 



