ADDITIONAL SPECIES, ETC. 323 



Estimate of provinces — ? Estiaiate of counties — ? 



Latitude 50 — 54. English t}^e of distribution. 



Agi-arian region. Inferagi'arian zone. 



Descends to the coast level, or nearly so. 



Ascends to ? (Altitude trifling). 



Range of mean annual temperature 51 — 48. 



Native. Uliginal. Mr. Babington states that he has 

 seen specimens of this species "fromBottisham Fen, Cam- 

 bridgeshire ; Yaxley Fen, Hunts ; Lincoln, Dr. Nicholson ; 

 Bovey Heathfield, Devon, Prof. Henslow'". It is said to 

 be distinguished from V. flavicornis and lactea by its 

 " slender threadlike rhizomes", and "very short corolla- 

 spur". It appears to have been imperfectly known, for 

 several years, but confused with V. lactea. So long ago 

 as 1833 (Outlines Geogr. Distrib. p. 103) I alluded to the 

 difference between a specimen of " V. lactea " from Bot- 

 tisham Fen, and the plant of Peebles, so named in the 

 Flora Scotica, &c. The former is V. stagiiina, and the 

 latter is V. flavicornis. About a dozen j^ears afterwards, 

 I met with specimens of the Viola from Lincoln, in the 

 hands of Sir W. J. Hooker, as mentioned in the fii'st 

 volume of the present work, page 179. Though much 

 disposed to pronoimce that Lincoln violet quite distinct 

 from both flavicornis and lactea (properly so named), I 

 was comj)letely puzzled by receiving two other specimens 

 of the same species of violet from the Bev. W. A. Leighton, 

 .which had flowered in his garden in June of 1836 and 

 June of 1837, the product of a plant sent to him fi'om 

 Sussex, by Mr. Borrer, in March, 1836. Mr. Leighton's 

 specimens difi"ered from each other only in size ; the 

 larger example of 1837 being so very like the Lincoln 

 Violet, that it might have been supposed only a branch 

 taken from my specimen of the latter. It thus seemed as 

 if the Viola lactea of Sussex had been changed into the 



