CHAP. XVI 



THE BRITISH ISLES 



361 



characters distinguishing them have been tested by culti- 

 vation under new conditions, and I am now enabled to 

 give a much more extensive list of the species or forms 

 which at present seem to be peculiar. For the following 

 list I was primarily indebted to Mr. Arthur Bennett of 

 Croydon, and for the present edition I have obtained the 

 assistance of Mr. W. H. Beeby and Messrs. H. & J. Groves, 

 and the present list is the result of a final revision by 

 the latter gentlemen. All these are well known for their 

 devotion to the critical study of British plants. 



List of Species, Sub-species, and Varieties of Flowef.ing Plants 

 FOUND in Great Britain or Irelanj), but not at present 

 KNOWN in Continental Europe. Sir Joseph Hooker's Notes 



IN THE FORMER EDITION ARE ALSO GIVEN. 



1. Ranunculus aquatilis, m?'. cambrieus (Ar. Benn.), Anglesey. Perhaps 



an extreme form of R. fluitans (Lam.). 



2. R. scoticus (Marshall). Scottish Highlands and Ireland. "Perhaps 



a sub-species of R. Flammula." (Groves.) 



3. Caltha radicans (Forst.). "A much disputed species, or form of C. 



palustris. It is a relatively rare plant." (J. D. H.) "Certainly 

 distinct from the Scandinavian form." (Ar. Bennett.) 



4. Arabis ciliata (R. Br. ) In Nyman's Conspectus Florce EiLropoem this 



species is given as found in England and Ireland only. 



"A very much disputed form of a plant of very wide distribution 

 in Europe and North America." (J. D. H.) 



5. Brassica monensis (Huds, ). "This and the continental B. Cheiranthus 



(also found in Cornviall) are barely distinguishable from one 

 another." (J. D. H.) 



6. Cochlearia micacea (Marshall). Perth, Argyll. " Closely related to 



C. alpina." (Groves.) 



7. Lepidium Smithii (Hook.), mr. alatostyla (Towns.). Hampshire. 



8. *Helianthemum guttatum (Mill), var. Breweri (Planch). Anglesey. 



" Very doubtful local plant. H. guttatum (true) has lately been 

 found in the same locality." (J. D. H. ) 



9. *Poly gala vulgaris (L.), var. grandiflora (Bab.), Sligo, Ireland. "A 



very distinct variety. " (J. D. H.) 



10. Sagina Boydii (F. B. White). Braemar. "Apparently a distinct 



species." (Groves.) 



11. *Geranium sanguineum (L.), var. lancastriense (With.). Lancashire. 



Mr. Bennett writes : " I have grown G. sanguineum and its pros- 

 trate variety in sand, and neither became lancastriense. " 



12. Genista tinctoria (L.), var. humifusa (Dickson). Cornwall. "A 



decumbent hairy form confined to the Lizard." (J. D. H.) 



13. *Trifolium repens (L.), var. Townsendii (Bab.). Scilly Isles. "A 



well-marked form by its rose-purple flowers. Confined to the Scilly 

 Isles." (J. D. H.) 



14. Rosa tomentosa, var. Woodsiana (Groves). 



15. Rosa hibernica, var. Grovesii (Baker). "R. hibernica is now considered 



a hybrid. " (Groves. ) 



