574 Pi-oceedings of the Royal Irkh Academy. 



a. umbellatum, Linn. River banks at Ardara and Grlenties ; Monrne- 

 beg river. This is the latest flowering plant to bloom in Donegal ; 

 it is not in full blow till about the middle of September. 



S. pallidum, Fr. Aghla Mountain, between the summit and Glen- 

 ties, at about 1600 feet, on exposed rocky bluffs. Determined by 

 Mr. James Backhouse. 

 S. crocatum, Fr. By the Mournebeg river south from Stranorlar. 

 This locality extends across the river to Tyrone in District 10. 

 S. crocatum is an unmistakeable form. 

 Arctostaphylos uva-ursi, Spr. Abundant on Slieve-a-Tooey on the 



seaward side. 

 Vaccinium vitis-idoea, Linn. Aghla Mountain, above Lough Finn, 



near Glenties. 

 Convolvulus arvensis, Linn. Railway banks between Ballyshannon 

 and Bundoran. 

 [C. soldanella, Linn. Mr. Allingham reports this species from the 

 shore at Wardtown, Ballyshannon. I could not find it.] 

 Cuscuta epilinum, "With. Sparingly on flax in a field by the lower 

 river into Laghy, about two miles above the village. This species 

 is reported to be a " troublesome weed in the flax" by old writers. 

 I have looked into flax-fields almost annually for it for a number 

 of years in northern Donegal, where flax is much grown; but 

 until last season (1885) I never gathered it in Ireland. Perhaps 

 of late years a purer seed is imported. 

 Lycopsis arvensis, Linn. Fields on sandy ground in the Boylagh pro- 

 montory near Ardara, very sparingly. 

 Lithospermum arvense, Linn. Railway banks between Ballyshannon 

 and Bundoran ; by the shore at Wardtown, near Ballyshannon. 

 ■\ Symp)hytiim officinale, Linn. By the Termon river, above Pettigo. 

 Solanum dulcamara, Linn. This species is native in limestone thickets 

 by the Erne, opposite cliff, and lower down ; by roadsides, in old 

 hedges on the Ballyshannon road near Donegal, and by the upper 

 river below Laghy. \_Antirrhinum majus, Linn. Established many 

 years on old walls at "White House, Killybegs.] 

 ^'Atropa lelladonna, Linn. The discovery of this species in a remote, 

 rigorously wild-looking locality, was a great surprise. It grows 

 abundantly on an exposed, low, limestone rocky place above tide- 

 mark on the south side of Gweebarra Bay, east of Innishkeel 

 Island. The ground above is wild, unbroken, sheep pasture, and 

 there is no sign of cultivation in the neighbourhood. A small 

 cabin, about half a mile away, is the nearest habitation. The 

 geographical range of this species alone precludes us from accept- 

 ing it as a native. It is very rarely found in Ireland, only in 

 two or three localities, and those always at ruins or near houses. 

 Mr. Arthur Brooke, who was with me at the time, helped me to 

 search for any remains of ancient habitation or cultivation, but 

 we saw none. 



