LEES : ADDITIONS TO WENSLEYDALE FLORA. 



central valley (drainage district 8), the elevation of which is 

 200 yards less than Semerwater. 



20 Heleocharis acicularis Sm. H. 



South and south-east end of Semerwater, in sandy, peaty 

 ground amid the Eqiiisetum ! In plenty; perhaps not previously 

 observed here, because in any but such a dry season as that of 

 1884, the spot would be unapproachable on foot. 



21 Carex involuta Bab. H. 



Amid bushes bordering the ^Backwater' marsh (old bed of 

 river Yore) just below Hawes ! A distinct-looking plant, inter- 

 mediate in most respects between anipidlacea and vesicaj^ia : 

 perhaps a hybrid. 



22 Polypodium calcareum Sm. JI. L. 



By the Gayle Beck, above the force of Aisgill. Also shown 

 to me by Mr. Percival on Thackthwaite limestone scars. 

 Although unrecorded for vice-county 65 in both editions of 

 ' Topographical Botany'; and omitted in the species enumeration 

 of ' North Yorkshire ' (p. 311); yet it is given on page 127 in 

 the body of the latter work amongst other names of plants 

 found on the crags of Waldendale and Bishopdale ! It is very 

 curious that it should have thus dropped out of notice (as if it 

 were, or had been considered an error) for twenty-five years ; and 

 then have been independently re-found in two new stations, 

 wide apart and miles from the old one, by Mr. Percival and 

 myself; showing conclusively how greatly (compared with Tees- 

 dale) Wensleydale botany has been neglected for well-nigh a 

 quarter of a century. 



23 Equisetum variegatum Schleich. H. L. 



On the wet, rocky east bank of the Bain, above Bainbridge, 

 June 1884, in some plenty, but rather dwarfish. After noting 

 this, I turned to 'North Yorkshire' (p. 314), and then found 

 there was a previous report (held doubtful by Baker, for the 

 drainage district No. 7 is omitted under 'Area') of its having 

 occurred by the Yore side at Aysgarth Force. To clear the 

 matter up, Mr. Percival and myself made speedy search there, 

 with the result that we soon found it, in plenty and luxuriant, 

 growing with Scirpus pauciflorus in wet, stony ground, on the 

 north bank of the river near the ' middle ' falls ! 



24 Nitella opaca Ag. Z. 



Mingled with confervse at the roots of Potmnogeton oblongifoliiis^ 

 by the north bank of Yore, Bear Park; J. P. ! Bishopdale 1 



25 Chara fragilis Desv. H. L. 



In the river Yore, 500 yards below the bridge at Hawes ! 



Jan. 1885. 



