﻿NOTES ON BRITISH HTERACIAk 229 



Beacon. The radical leaves are dull bluish green, rather firm in 

 texture, glabrous above, with long white simple hairs on the margin 

 and under surface. The phyllaries are broad, with stunted black- 

 based hairs and very few set®, floccose at the tips. Styles pure 

 yellow. Unexpanded ligules very slightly pilose. It differs from 

 the type in having longer peduncles, fewer rather smaller and not 

 adnate heads ; the whole plant being less hairy, floccose and setose, 

 and the radical leaves more spreading. 



H. rubiginosum, n. sp. I have felt it necessary to dissociate 

 this plant (var. rubescens Backh.) from H. vulgatum Fr. It differs 

 in having pure yellow styles, much broader phyllaries, which are 

 less floccose, but with longer and more numerous simple hairs ; 

 leaves broader, thicker, often blotched with rusty purple, and 

 differently toothed, &c. It remains constant after many years' 

 cultivation. Dr. Elfstrand regarded this as a very good species, 

 which is unknown in Scandinavia. I should have retained rubescens 

 for the specific name, had not its use been antedated (Gilib. Exerc. 

 Bot. Schol. Univ. Viln. 13, 1772). 



H. duplicatum Almq. Dr. Elfstrand so names a plant found by 

 Dr. F. Buchanan White by the Kincraigie Burn, Perth, in July, 

 1891. It is nearly allied to H. cuspidatum Lindeb, H. Sc. /•;.<•.<. 185. 



H. Adlerzii Almq. Found by Mr. J. E. Griffith on the banks 

 of the Menai Straits, in July, 1891. It differs from li. vulg Hum 

 Fr. in having broader hairs, characteristically toothed towards the 

 base, and in its broader phyllaries, which are almost devoid of 

 floccose down. 



H. instjlabe F. J. Hanb. This was described by me in Journ. 

 Bot. 1892, p. 368, as a variety of H. casium Fr. Since then Dr, 

 Elfstrand has furnished me with a fine typical series of Fries' 

 plant. He pointed out that this "variety" must be specifically 

 separated from, though it might be placed next to, H. ccesium. H. 

 easium var. petrocharis Linton, he considered to be closely associated, 

 if not identical, with my plant. This opinion has been so far con- 

 firmed by Dr. Dahlstedt that he told Mr. Linton that his plant 

 must be separated from easium, and indeed the latter seemed to be 

 of much the same opinion when he wrote in Journ. Bot. 1893, p. 180, 

 "It may deserve specific rank." 



H. cambrieum (Baker), n. sp. Although allied to H. easium 

 Fr., I feel it necessary to raise this form to specific rank, and in so 

 doing have the approval of all whom I have consulted on the sub- 

 ject. Its small habit, glaucous nature, and other well-known 

 features are all retained after prolonged cultivation. 



H. Orarium var. fulvum, n. var. This name I propose for the 

 plant recorded in Journ. Bot. 1888, p. 205, which Dr. Lindebeag 

 called U. orarium var., giving many reasons why it differed from 

 the type. As the plant was widely circulated through the Botanical 

 Exchange Club by the Kev. W. B. Linton and Mr. J. Cosmo Melvill 

 in 1888 from the east bank of the Naver, Sutherland, where I first 

 gathered in in 1886, I need not enter into a detailed description 

 It is specially characterised by the small reddish yellow flower 

 acutely dentate leaves, and scabrid stems. 



