100 2. NYMPHiEACEiE. 



Descends to ? 



Ascends to ? 



Range of mean annual temperature, say 47 — ? 



Native. Sylvestral. Apparently a true native, though 

 very local. It is desu-able that the existence of this spe- 

 cies within the Lake province should be confirmed by 

 more recent authority. Mr. Woodwai-d is reported to have 

 found the plant in " moimtainous pastm-es above Troutbeck, 

 near Ambleside;" and Hutchinson gives the locality of 

 " Sandwicke, Ulleswater." The locality of Thorndon, in 

 Essex, recorded by Blackstone, cannot stUl be retained 

 without confirmation. Mr. Campbell considered the loca- 

 hty of " Cleish woods," to be one to which this and various 

 other garden plants had been introduced. He mentions, 

 in example, Valeriana pyrenaica, Doronicum plantagineum, 

 Scrophularia vemalis, Linaria Cymbalaria, Ai-abis Tunita 

 and Meconopsis cambrica. I am without information re- 

 specting the altidudes of its localities, and consequently at 

 a loss to give the range of zones and temperatui-e. 



36. Nymph.ea alba, Linn. 



Ai-ea, general. 



South limit in Cornwall, Hants, Kent, f -^ /«'?*/•■ . ^ ^^' ^ff' 

 North hmit in Shetland, Sutherland, Hebrides. •^/<^- 



Estimate of provinces 18. Estimate of comities 70. 

 Latitude 50 — 61. British type of distribution. 

 Agrai-ian region. Inferagrarian — Superagi-aiian zones. 

 Descends to the coast level, in the Peninsula. 

 Ascends to 350 or 400 yai-ds, in Lake province. 

 Range of mean annual temperature 52 — 45. 

 Native. Lacustral. Distributed rather generally thi'ough 

 Britain, and yet often absent from tracts sufficient to consti- 



