74 FURTHER NOTES ON HIERACIA NEW TO BRITAIN. 



shire, in 188C ; at the slate-quarries, Bethesda, Carnarvonshire, in 

 August, 1888 ; by the Revs. E. F. & W. R. Linton at Uig, Skye, in 

 August, 1888 ; and in the same month by Mr. W. F. Miller in Glen 

 Lyon. A description of the species will be found on p. 18 of Dr. 

 Lindeberg's ' Scandinaviens Hieracier,' and the specimens collected 

 agree well with those issued in the * Hierac. Scand. Exs.' 



H. salicifoUum Lindeb. H. corymhosum Fr. pr. p. Cliffs of Llyn 

 Dulyn, Carnarvonshire, 30th August, 1887, by the Rev. Augustin 

 Ley. This again was identified by Dr. Lindeberg himself, and our 

 Welsh plant agrees w^ell with the specimens published in the 

 * Hierac. Scand. Exs.' 



H. muronon L., pt. var. cUiatum Almq. Among rocks by the 

 Almond, Perthshire, first by Dr. F. Buchanan White, and subse- 

 quently, in his company, by myself. 



II. diaphanoides Lindeb. Hierac. Scand. Exs. No. 123. The 

 first time I collected this plant was in Teesdale, in June, 1883, when 

 I took it to be a form of H. vuU/atwn Fr. Last year, however, 

 whilst collecting on the limestone scars about Settle, accompanied 

 by the Misses Thompson and the Rev. W. H. Painter, I again 

 found what I believe to be the same plant, and was then sure that 

 it could not properly be placed under H. vahjatum. Fr. The long, 

 narrow, shining buds, densely clothed with setse, and almost devoid 

 of simple hairs and floccose down, and the clean cut of the whole 

 plant, instantly attracted my attention. Normal H. vuhjatum, Fr., 

 as well as the var. rubescens Backh., were growing in the same 

 place, but this plant was unmistakably different to either, and 

 I remarked at the time that it was certainly new. Dr. Lindeberg 

 has now identified my Teesdale specimens as belonging to the 

 above, and I have little hesitation in placing the Settle plants under 

 the same name. 



In my notes published last July I said that I purposely postponed 

 speaking of several new forms until I had had tlie advantage of 

 another opportunity of studying them in situ. This I had last 

 summer, and I now propose to treat of them in the same brief way 

 as I did of those described in my last paper, and under names 

 which will serve, for the present at any rate, to distinguish them. 



H. Backhouse!, n. sp. Belonging to the Xigrescentes, but 

 quite distinct from any of our described species. I first collected 

 it, in the company of the Rev. E. S. Marshall, near the Dhuloch, 

 Aberdeenshire, in 188G. On referring the plant to Mr. Backhouse, 

 he thought at the time that it might be an extreme form of 

 H. niyrcscens Willd., but added, "Let Professor Babington decide; 

 I should be satisfied if he thinks safe to give it a new name." 

 Prof. Babington wrote, " I do not think that this is niyrcscens, nor 

 gracilentum. It is very probably new." The subsequent experience 

 of the plant under cultivation during two seasons, and grown side 

 by side with H. jiit/rescens Willd. and //. <jrncilentum Backh., has 

 abundantly shown my first impression to be correct. It may be 

 recognised by its erect, glossy, subcoriaceous, radical leaves, with 

 long, sharp, forward-pointing teeth. It differs also from H. 



