﻿22fi NOTES ON BRITISH HIERACIA. 



na-muic-dhui from Glen Derry. It is a very distinct plant, which 

 has hitherto been included under H. gracilentum Backh., but differs 

 both in the wild and cultivated state from specimens of that species 

 from other parts. It is the form referred to in my Monograph, 

 p. 28, as having metallic-looking leaves. A marked feature of this 

 plant in cultivation is a tendency to form a dense mass of knotted 

 rhizomes on the surface of the ground. 



H. atbatum Fr. f. occurs among the hills of Perthshire, the 



lected < 



and a slightly different form from Ben Creachan, Argyle, by the 

 Bev. E. S. Marshall. 



H. cubvatum Elfstrand embraces much of what British botanists 

 have hitherto placed under H. nigrescens. It differs mainly from 

 the latter in having many long simple hairs on the involucre, true 

 H. nigrescens Willd. having setae only. Plate No. 12 in my mono- 

 graph represents Elfstrand's species. True H. nigrescens occurs on 

 the Breadalbane Hills. 



the plant I described under letter 

 Bot. 1893, p. 17, from the English Lake District. 



nq. is perhaps the most interesting addition 

 to the British list that I have to record. The species is common 

 in South Greenland, and has now been found in Sweden and N.W. 

 Scotland, forming a connecting link between two continents. It 

 occurs below Ben More of Assynt, where it was gathered by the 

 Rev. E. S. Marshall and myself on July 12th, 1890, and remained 

 among my undetermined forms until recently recognised. Dr. 

 Elfstrand says that our plant differs from Almquist's type in 

 having larger involucres, longer and narrower phyllaries, with 

 shorter setaa, and more entire leaves. 



found it necessary to remove this form from the section Alpi la to 

 the Cerinthoidea, the characteristic clothing of the involucre and 

 other features suggesting its present connection, and severance from 

 //. ManhaUi. 



H. clovense Linton, var. Griffiths, n. var. This is a striking 

 variety, discovered by Mr. J. E. Griffith at Nant Francon, Car- 

 narvonshire, in July, 1893. Though resembling the type in its 

 general habit of growth, the styles are somewhat darkened, the 

 leaves narrower, more gradually tapering into the petiole, and 

 beautifully ciliated with a profusion of stiff curved hairs. The 

 clothing of the involucre is characteristic of the Cerinthoidea, though 

 the presence of micro-glands indicates a union with the Oreadea. 

 Another plant having pure yellow styles and much less hairy leaves, 

 &c, occurs on the Great Orme's Head, and is best placed, I think, 

 as a variety or form of the same species. 



H. Leyi, n. sp. This name I propose to give to a plant already 

 well known to most English botanists, viz., that which has of late 

 years been regarded and circulated as H. bifidum Kit. It grows in 

 great profusion on the hills of Carnarvonshire, whence it has been 

 gathered and distributed for many years by the Bev, Augustin Ley, 



