VIOLA 73 



heaths, preferring peaty soil. Locally common, but very rare in 



the northern part of the county. P. April-June. 

 First record. Viola pdlustris rotundifolia. It grows . . . most plentifully 



att Chilswell in Berkshire amongst the moistest Boggs, Plot, Nat. 



Hist. Oxfordshire, 144-5, ^677. Detecta fuit a Jacobo Bobert decennio 



abhinc, Morison, Hist. Ox. 475, 1680. 

 2. Oek. Childswell Hills, Plot, I. c. A specimen from Plot's 

 locality, where it still exists, was gathered by Dillenius in 

 1744, and is preserved in his herbarium at Oxford. Wootton 

 Heath, Baxter in Walk. Fl. (Still there up to 1895.) Birch 

 Copse, Thurland. Hen Wood. 



4. Kennet. Cookham [Crookham] Common, Lond. Fl. Mortimer. 



Burghfield Common, Tufnail. Bog on Snelsmore Common, 

 RusseWs Cat. 1839. Plentiful in Ufton woods. Abundant in 

 Aldermaston woods and Soak. Greenham Common. Burgh- 

 field Heath. Bucklebury Common. Padwoi'th. 



5. Loddon. Near lake in Wellington College grounds. Grebe pond. 



Broadmoor. Ambarrow, Penny. Between Wokingham and 

 Wellington College, Crawley. Sunninghill. Bog to the north 

 of Wellington College Station. Near Long Moor. Finchamp- 

 stead. Pond near Sandhux'st College. 

 It will be seen that in the north of the county this species is con- 

 fined to a very small area on the Boar's Hill range in the Ock 

 drainage. It is probably absent from the Isis district, and unless it 

 be found about Fence Wood and Bucklebury is probably absent from 

 the Pang district. Its headquarters are the peaty country on the south 

 of the Kennet, where in some places it is an abundant plant, and on 

 the Bagshot Sands in the Loddon district, where it is not imcommon. 

 Viola imlxistris is reported for the bordering counties of Surrey, 

 Hants, Wilts, and Oxfordshire, but it is perhaps extinct in the latter 

 county. 



V. odorata, Linn. Sp. PI. 934 (1753). Sweet Violet. 



V. nigra sire purpurea, Ger. Em. 850. 



Top. Bot. 54. Syme, E. B. ii. 14, t. 171. Nyman, 78. Fl. Oxf. 41. 

 Native. Septal. Hedgerows, wood-borders, open coppices, &c. Rather 



common, but more frequent in the north and east of the county. 



P. March-May, and sometimes in the autumn. 

 First record. Viola odorata. Common or Sweet Violet, Mavor^s Ayr. 



Berks, 1809. 



1. Isis. Near Cumnor a large lilac-coloured variety, Bosicell. 



Wytham. Appleton. Longworth. Faringdon. Buscot. Coles- 

 hill. Buckland. Pusey. Bourton, &c. 



2. Ock. Tubney, Walker. Denchworth and f. alba, Wait. Hinksey. 



