168 THE JOURNAL OF BOTANY 



now convinced, to fall under H. vulgatum Fr. I propose therefore 

 to place it under this species, very near to var. amphihohim Lindeb., 

 of which indeed it may be a mountain form. It is, however, a more 

 slender, delicate plant, with narrower, less deeply dentate leaves, 

 and broader blunter phyllaries. 



H. RiGiDUM Hartm. var. nov. strigosum. Stem 1-3 ft., bearing 

 abundant stiff, white, black-based hairs usually throughout its whole 

 length ; with 5-10 long lanceolate acute leaves, the upper sessile, 

 the lowest and the root-leaves decurrent into a rather long petiole ; 

 lower surface with stiff white hairs, edge shortly ciliate, bearing 

 several deep acute teeth. Branches long, 1-2 -flowered, confined to 

 the upper third of the stem, forming an acute angle with the stem 

 and ascending. Heads few, large, buds ovate-truncate. Outer 

 phyllaries short, blunt, inner long, narrow, rather acute, with 

 conspicuously dark green centre and light margin, etomentose, 

 bearing abundant stiff white hairs, and very few long-stalked glands 

 near the base. Peduncles with sparse loose tomentum, eglandular. 

 Style yellow. Near var. loufjicHiatuni F. J. Hanb., but distinguished, 

 so far as the small amount of material I have seen of that plant 

 enables me to judge, by its stem and phyllaries being much more 

 hairy, the hair stiffer ; by its larger heads, and longer, more closely 

 ascending branches ; by its longer leaves with less hairy upper 

 surface, less ciliate edge, deeper coarser teeth, and longer petiole. 

 Micro-glands in the present variety usually absent, or very in- 

 conspicuous. Original root-leaves blunt. Linton's Set of British 

 Hieracia, No. 153. 



Mountain gleus, mostly on river-side rocks and near waterfalls ; 

 abundant in South Breconshire. 



Localities. Glyn Tarell, 1888; Blaen Taf-fawr ; Cwm Taf- 

 fechan ; Hepste and Mellte Glens ; Upper Nedd Glen ; Upper 

 Tawe Glen ; Glyn CoUwng — all on river-side rocks. On mountain 

 cliffs at Craig Gledsiau, Glyn Tarell, and Llyn-y-fan-fawr. On dry 

 limestone ledges at the head of Dyffiyn Crawnon ; on railway 

 banks at Glyn Collwng, becoming stylose, with discoloured styles 

 on dry railway ballast — all these localities are in South Breconshire. 

 On the Yrfon near Abergwesyn, North Breconshire ; I believe also 

 on mountain cliffs at Llyn-y-fan-fechan, Carmarthenshire. 



Plants gathered by me in Glyn Tarell first in 1883, and subse- 

 quently named by Dr. Lindeberg for Mr. F. J. Hanbury " H. lapponi- 

 ciimFr., nov. var." (see Journ. Bot. 1889,p.73),differfromthevariety 

 of H. riglduni Hartm. here described, in having darker broader less 

 hairy phyllaries ; but, as this slight difference seems due to the 

 spray of a waterfall within the reach of which the plants named 

 "H. lapponicufn Fr." grow during wet seasons, and has been ascer- 

 tained to disappear from the same plants during drier seasons, I am 

 bound to express my conviction that these plants will have to be 

 placed under the present variety of H. riyiduni Hartm. 



