BRECON AND WEST YORKSHIRE HAWKWEEDS 13 
very unlike each other, and they remain distinct in cultivation, 
and come true from seed. 
Var. micracladium Dahlst. Absent from Brecon; fairly abun- 
dant in Yorks, always in the dales, not on scaurs. 1. Catterick 
Force, Ribblesdale. 2. Chapel-le-Dale, Beazley and Thornton 
Glens, Ingleton; Dent Dale, abundantly. 3. Arneliffe ; Deep 
Dale, on the Upper Wharfe. 
Var. maculosum Dahlst. On scaurs, very scarce. 2. Twistle- 
ton Scaur; Hanbury! Airton; Hanbury! Not in Brecon 
H. peuiucimpum Laestad. H. pellucidum var. lucidulwm Ley 
ain 
the west. Taf Fechan Glen, Upper Tawe Glen. 1. Catterick 
and Ribblehead Glens. 2. Scaurs and glens near Ingleton. 3. 
Hestleton Glen, Arncliffe, and Kettlewell. Between Witton and 
appears that the plants we have been accustomed to call 
H. pellucidum Laestad. in Britain, and some of which have been so 
named by great Scandinavian authorities, are now mostly to be 
placed under H. serratifrons Almq., and that the very distinct 
lant we have been naming lucidulum Ley is the true H. pellu- 
cidum Laestad. 
H. canpetasrri W. R. Linton. Only in Yorks, on limestone 
Scaurs, rare. 2. Ingleborough scaurs above Dale Beck. Teesdale, 
North Yorks; Brit. Hier. p. 44. 
H. varicotor Dahlst. Only in Yorks, on the scaurs, and on 
riverside rocks, not common. 1. Clapham Fells, at Ingleborough 
Cave. 2. Chapel-le-Dale; Dent Dale, abundantly. 3. On the 
Upper Wharfe, at Deepdale. 
H. cmiatrum Almq. Only in Yorks, on the scaurs and in river 
glens, widely distributed, but not abundant. 1. Clapham Fells. 
2. Chapel-le-Dale and Thornton Force ; George’s, and other scaurs 
near Ingleton. 3. Hestleton Glen, Arncliffe ; Buckden, on the 
Upper Wharfe; head of the Cover River; W. R. Linton! Aysgarth 
Force in Wensleydale, North-west Yorks; Wheldon! ae 
H. repan Ley. 4H. ciliatum var. repandum Ley; Brit. 
Hier. p. na Brecon, faite plentiful ; not in Yorks. II. Cliffs, 
both of limestone and sandstone, from the central cliff of the 
narvon (1891). I venture to give this plant specific ran 
deference to the judgement of Dahlstedt, who writes (1907) : “ Not 
Var. venosum Ley. H. ciliatum Almq. var. venosum Ley in 
Journ. Bot.1907, p-109. Brecon, very local. II. Craig-y-Nos Puce, 
on the western borders of the county (limestone), at 1250 ft. Not 
