2 2 THE BOTANICAL EXCHANGE CLUB OF THE BRITISH ISLES. 
Festuca arenaria , Godron, glabrescens. Dr. Boswell sends a 
rock form from Burntisland, Fife, June, 1879. Prof. Babington 
would call these specimens rubra. “ I may repeat my remark that 
the name arenaria cannot stand ” (see Man. , p. 430). Dr'. Boswell 
also names glabrescens, or oraria as Prof. Babington considers it ought 
to be called, a plant sent by Mr. J. Harbord Lewis, from Wallasley, 
Cheshire, July, 1879. Dr. Boswell similarly names a plant sent by 
Rev. Augustin Ley from sea cliffs, near Cawsand, East Cornwall, 
9th July, 1878 ; Mr. Baker agrees. 
Brojnus asper , Murr., b. Benekenii. Cultivated specimens from a 
root from Eaton Bishop, Herefordshire, and wild specimens from 
woods on limestone, Downton, Herefordshire, 6th July, 1878, are 
sent by Rev. Augustin Ley. See Ex. Cl. Report, 1877-8, p. 20. 
Dr. Boswell would call the plant from Eaton Bishop “ var. serotinus , 
making a first step towards Benekenii ; and that from Downton, 
Herefordshire, is a good deal nearer, but not exactly, the plant I 
understand as Benekenii .” 
Bromus mollis , L. var. Sent by Mr. George Nicholson from 
the banks of the Thames, Mortlake, Surrey, July, 1879, with the 
following note : — “ A number of plants of this peculiar form were 
collected by me on the bank of the Thames at Mortlake. In its 
habit, and the compact narrow panicle with sessile or nearly sessile 
spikelets, it comes near to Bromus hordeaceus , Fries. From this, 
however (with authentic specimens of which I have ccmpared it), it 
differs in being quite as hairy as ordinary mollis , and not glabrous, or 
nearly glabrous, as in Fries’s plant.” 
Nephr odium Filix-Mas , Rich., b. affine. Sent by Rev. Augustin 
Ley, from near Little Dean, West Gloucester, June 7, 1876, and by 
Mr. George Nicholson, from the Queen’s Cottage Grounds, Kew, 
Surrey, July, 1879. 
Nephrodium dilatatum , Desv., var. lepidotum , Moore. Cultivated 
specimens from Kew, Surrey, 21st July, 1879, sent by Mr. George 
Nicholson. Prof. Babington sends the following note : “ If this is 
the true Lastrea lepidota of Moore (Ferns, ed. iii., p. 136), it can 
hardly be a variety of L. dilatata. Indeed, he thought it distinct, 
and doubted its being a native fern.” 
Ophioglossum vulgatum , L., b. ambiguum , Coss. and Germ. A 
few specimens only were collected by Mr. Charles Bailey, 21st 
July, 1879, b 1 the damp sandy ground at the foot of the sandhills, 
on the land side, one mile west of Dyffryn railway station, between 
Harlech and Barmouth, Merionethshire. It is figured on plate 46 of 
Sir William Hooker’s “British Ferns,” and the Welsh specimens agree 
well with this figure, though generally smaller in size. The variety 
ambiguum was originally detected more than twenty years ago in the 
neighbourhood of Paris, and was found, shortly afterwards, in one of 
the numerous “laiches” at Arcachon. It was first noticed as a 
British plant by Dr. J. T. Boswell, who detected it in the Orkney 
Islands; and Mr. Curnow has recently distributed Scilly Islands 
specimens through the Club. The Dyffryn locality is, therefore, a 
connecting link between the extreme stations of western Europe, 
from the Orkneys in the north to Arcachon in the south. M. Durieu 
de Maisonneuve finds a separating character between O. vulgatum 
