sALix 455 



I have seen var. vitellina near Kennington, near Padworth, near 

 Hermitage, by the Loddon, and by the Thames in several places, and it 

 is recorded by Mr. J. Lousley from Blewbury in Russell's Cat. 1839. 



S. alha is found in all the bordering counties. 



S. purpurea, Linn. Sp. PI. 1017 (1753). Purple Willoiv. 



Top. Bot. 375. Syme, E. B. viii. 217, t. 1316, Nyman, 665. Fl. Oxf. 272. 



Native. Paludal. The aggregate plant is locally common by our stream- 

 sides, especially on the Upper Thames from Appleton to Godstow, 

 by the Kennet, and by the Thames between Henley and Marlow. 

 Small tree. March-April. 



First record. Mr. Winch, in Kew Bot. Guide, 1835, and Sm. E7igl. Fl. 

 1828. 



1. Isis. Near Appleton. Bablock Hythe. Wytham. Kelmscott. 



Buscot. 



2. Ock. By the Thames at Oxford, Winch MSS. 1832. Kennington. 



Kadley. Abingdon. Marcham. Wittenham. Frilford. 



3. Pang. Tilehurst. Moulsford. Streatley. Pangbourn. 



4. Kennet. Hungerford. Kintbury. Southcote. Theale. Benham. 



5. Loddon. Windsor, Bolton King. Bray. Hurley. Cookham. 



Wargrave. Wokingham. By the Loddon, near Sandford Mill. 

 Near Loddon Bridge. Barkham, &c. 



Forma Lamberfiana (Sm. Fl. Brit. iii. 1041, as a species). The Botjton 

 Willoiv. Syme, E. B. t. 1318. This form, which has the leaves much, 

 broader, less tapered at the base, and more glaucous branches, 

 was recorded from Henley-upon-Thames in Sm. Engl. Fl. iv. 190, 182F. 

 It still occurs in the vicinity. I have seen it in the Kennet Valley, 

 near Kintbury, Aldermaston, Burghfield, Midgbam, Theale, &c., on 

 the Thames near Hurley and Bisham, and near Whistley Mill. 



Forma Woollgariana (Borrer, in E. B. Suppl. t. 2651, as a species), 

 Syme, E. B. t. 13 17. Occurs by the Kennet between That chain and 

 Newbury, and near Hurley. It has leaves conspicuously broader 

 above the middle. 



Forma ranmlosa (Borrer). I have seen it on the Loddon. It is the 

 S. Helix of Andersson. 



S. soRDiDA, Kerner, in Verh. Zool.-Bot. Ges. Wien. x. (i860) 257 = 

 S. purpurea x cinerea — S. cinerea-purpurea,'Wiinmer. To this hybrid I refer 

 some plants which I saw by the Thames between Park Place and 

 Hurley. That they are forms of S. purpurea is undoubted, while the 

 cinerea parentage is suggested by the shape and colour of the leaves, &c. 

 In the male plants there is less difficulty in distinguishing this hybrid, 

 since the filaments of the stamens are more or less connate. In 

 S. cinerea they are quite free. 



S. PURPUREA XTRIANDR A. Somo plants whicli occur near Aston 

 Ferry, which I have only seen in leaf, suggest the above parentage. 



