﻿228 NOTES ON BRITISH HIERACIA. 



between the two species, though they are distinct enough in other 

 localities. 



H. nitidttm Backh., var. siluriense, n.var. A form from Cwm 

 Tarrell, Breconshire, collected by the Rev. A. Ley in 1890, differing 

 from typical nitidum in having fewer yellow-headed setae, and more 

 numerous long white black-based hairs on the involucre ; the 

 peduncles in the Welsh plant are very fioccose with long simple 

 hairs and hardly any setae, whilst in the type they are fioccose, and 

 densely setose with few, if any, simple hairs. 



H. scoticum F. J. Hanb., var. occidentale, n.var., is the plant 

 referred to under the letter "b." in my paper in Joiirn. Bot. 1893, 



H. saxifragum Fr., var. orimeles, n. var., is the plant described 

 under the letter "e." in my paper in Journ. Bot. 1893, p. 18. 

 Mons. Arvet-Touvet has seen this plant from Craig Dulyn, Car- 

 narvon, and regards it as a distinct variety of H. $aadfragum Fr. 

 rather than as a form of H. buglossoides, in which opinion Dr. 

 Elfstrand concurs. 



H. aggeegatum Backh., var. prolongatus!, n. var. This I found 

 on the mountains south of Glen Lochay, Perthshire. It differs 

 from the type in having much narrower leaves, and longer and 

 more hairy involucres. 



H. bivale F. J. Hanb., var. subhietum, n. var., found on Clach 

 Leathad, Argyleshire, and on Glen Falloch, Ben Laoigh, Corrie 

 Ardran, Tyndrum, and Allt Dubh Ghalair, Perthshire, by the Rev. 

 E. S. Marshall and myself. Dr. F. B. White has also gathered it 

 by Loch Voil. The involucres are much darker than in the type, 

 having few setae, little fioccose down, and numerous long hairs ; 

 whilst in typical rivale there are few hairs, rather numerous Betse, 

 and abundant fioccose down (especially at the margins of the phyl- 

 laries), the stem is more hairy and fioccose, and the whole plant 

 much greyer. The species is common and widely spread in the 

 north of Britain, and includes many slightly differing forms which 

 scarcely deserve special designation. 



H. mtjrorum L. pt., var. camptopetalum, n. var., gathered by Mr. 

 J. Cosmo Melvill and myself in two separate localities above the 

 falls of Allt-na-Caillich, Ben Hope, Sutherland, on July 21st, 1888. 

 A curious and interesting form, which I hesitated to name before 

 the whole collection of the murorum section had been inspected by a 

 competent Scandinavian authority. Time and cultivation have 

 proved it to be distinct. It belongs to the pellucidum group, and is 

 nearly related to H. munduliforme Dahlst. Herb. C. I. 53. Its main 

 characteristics are the few, small, dark green, long.petioled, oval 

 radical leaves, armed with minute sharp teeth; stem-leaf, if present, 

 petioled, lanceolate, very acute, irregularly and coarsely dentate ; 

 heads few (2-6), borne on spreading and almost straight peduncles; 

 involucres small, compact and very dark with numerous setae. 

 Ligules short, curled-up and glabrous-tipped. Styles of a dirty dark 



H. euprepes F. J. Hanb., var. cuvicolum, n. var. This was 

 found by the Rev. A. Ley, in 1890, on the high cliffs of the Brecon 



