No) 
~ 
© 
109I. 
1344. 
1361. 
13609. 
1424. 
1772. 
1773. 
1782. 
HOBKIRK : DISAPPEARANCE OF PLANTS IN YORKSHIRE. 5 
probably from botanists and others (R. Barnes). Formerly 
on stream-side under Gordale Scar, but now apparently 
extinct, probably from collectors (C. P. Hobkirk). 
- Menyanthes trifoliata L. Wet places, Littondale, 700 ft., 
extinct through drainage (W. A. Shuffrey) 
Lathrzea squamaria L. Reference is made (W.H.) to a 
habit this plant is said to possess of disappearing from 
a station for the time being and re-appearing in exactly the 
same spot after an interval of thirty or forty years. “Can 
instances of this be given? 
Epipactis palustris Crantz. Once not uncommon at 
Hell-kettles near Darlington, but now almost extinct, being 
eradicated by botanists and collectors (R. Barnes). 
Ophrys muscifera Huds. Has disappeared from a wood 
in Littondale (W. A. Shuffrey). [Was seen about five 
years ago, but not since. ] 
Cypripedium Calceolus L. Has disappeared from the 
oods on south side of Littondale through ‘botanical 
robbers’ (W. A. Shuffrey). [Similar reports received as to 
Durham stations. | 
Paris quadrifolia L. Has gradually become much rarer 
round Richmond (E. B. Walton). Formerly in woods near 
Storthes Hall, Huddersfield ; apparently now exterminated 
by collectors (C. P. Hobkirk). 
Asplenium viride Huds. Is much scarcer in all its Teesdale 
localities, Falcon Clints, Greenfell, etc., through tourists 
and collectors (R. Barnes). ' 
Asplenium Trichomanes L. Formerly in Dungeon Wood 
near Huddersfield, in clefts of rocks, but is now extinct, 
partly from collectors, and finally by the making of a railway 
(C. P. Hobkirk). 
Scolopendrium vulgare Symons. Formerly grew profusely 
in the neighbourhood of Richmond, but is now becoming 
scarce, in consequence of the depredations of professional 
fern collectors (E. B. Walton). The same is reported from 
Hazelgrove, Saltburn, and other neighbouring glens 
(R. Barnes). 
. Woodsia ilvensis R.B. Formerly in several localities in 
Teesdale, but now quite extinct through the action of 
collectors (R. Barnes). This was its most southern English 
station. 
