112 A CONTRIBUTION TOWARDS A FLORA OF BRECONSHIRE. 



in some cases possibly native. The ycAv is now being extensively 

 destroyed in the county, owing to the belief that its leaves are 

 fatal to horses feeding on them. 



'^'Typha latifoUa L. Apparently rare. Talyllyn. — -''T. anijusti- 

 folia L. Llangorse Lake, in some plenty. The only record from 

 an inland Welsh county. 



*Sparganium ramosum Huds. Uncommon. Talybont. Brecon. 



— S. simplex Huds. Llangorse Lake. Swamp near the Usk, 

 east of Brecon. 



*Arum maculatmn L. F. 



*Lemna minor L. C. 



'^' Potamogeton natans L. Apparently scarce. Llangorse Lake. — 

 P. polygonifoJiiis Pourr. Junction of Kivers Wye and Elan ; A. Ley. 

 Only seen near Aberbran, and in bogs, Epynt Hills. — '■'P. per- 

 foUatus L. Wye near Builtli Wells. — *P. crisjms L. Canal, 

 Talybont. Brecon. Wye at Hay. — P. densus L., searched for 

 unsuccessfully. Appears to be scarce in Wales ; the Rev. A. Ley 

 informs me that it is very scarce in Herefordshire. — P. jnisillus 

 L., teste Arthur Bennett. Li a brook near Hirwain, dividing the 

 counties of Brecon and Glamorgan ; A. Ley. 



*}\vppia rostellata Koch. Canal about 1^ miles south of Taly- 

 bont, in some plenty. The occurrence of this maritime plant, at 

 a distance of about 35 miles (by canalj from the sea, is remarkable. 



"^-Triglochin palustre L. F. in swamps. Peu-y-wyllt. Mountain 

 above Torpantau Station, about 1700 ft. Canal, Talybont. 

 Llangorse Lake. 



"^'Alisma Plantago L. Canal, Gilwern. Llangorse Lake. — Var. 

 *b. lanceolatum With. Llangorse Lake, but less frequent than the 

 type. 



*'Butomus timhellatus L. Llangorse Lake, east side ; H. N. 

 Ridley. 



"^•Elodea canadensis Mich. Canal at Gilwern and Talybont. 

 Llangorse. 



■■^Orchis mascula h. Hay road, Brecon. Vennyfach ; Miss Fryer. 



— 0. incarnata L. Meadow near Gludy Lake ; a slender form, 

 teste A. Ljennett; Miss Fryer. — 0. macidata L. Cwm Tarell ; A. 

 Ley. Near Brecon; Miss Fryer. F. Near Dolygaer. Torpantau. 

 Near Llangorse Lake. Near Garth. 



'^'Gymnadenia conopseaJir. F. in the Black Mountain District; 

 A. Ley. 



Habenaria viridis Br. Top. Bot. cd. ii. Not seen by Eev. 

 A. Ley or myself. — H. bijolia Bab. Man. Grwyue-faur Valley ; 

 A. Ley. Opkrys and Spiranthes not seen. 



Listera ovata Br. Eough meadows by the Usk, Brecon ; A. Ley. 

 Apparently scarce. Not seen by me. 



■r-Neottia Nidus-avis L. Near Pont-nedd-vechan, on the way to 

 Llynvach. Soicerhy in Herb. Brit. Mus. Is just inside the county 

 borders, I believe ; H. N. Ridley. 



(To be coutimicd.; 



