1 62 The Flora of Glamorgan. 



Potamogfeton, Linn. 451. 



1580. natans, Linn. Floating Pondweed. Tafod y ci, Dyfr-Uys Uydan- 

 ddail. 



Local. Frequent. Native. Lacustral. 



Crymlyn Bog. Gutch. Phyt. 1842. p. 180. Leckwith 

 Common ; Grangetown Moors. J.S. Kenfig ! H . Ewenny ! 

 Miss B. Merthyr district. E. and F. Gower ! Miss S. Llan- 

 genydd ; Penllergare ; Pantyffynon ; Neath ; Cowbridge ; Aber- 

 dare ; Peterston. Ridd. St.-y-Nil, 1904 ! Oxwich ! Welsh St. 

 Donats ! Ed. Several records have been excluded, on the ground 

 of the probability that they referred to the much commoner polygoni- 

 f alius. 



1 58 1, polygonifolius, Pour. Oblong-leaved Pondweed. 

 Local. Abundant. Native. Uliginal, lacustral. 



As this species has been confused so much with the preceding 

 one, all the available records are given. 



Fairwood Common ! and other places in the neighbourhood of 

 Swansea ! W. R. Linton. J. of B. 1886. Penrhys, etc. Fl. 

 Rhondda. Cockett ; Mynydd Garngoch ; Port Talbot. Ridd. 

 Caerphilly ! Eglwysilan ! Llanharran ! Penarth ! Whitford 

 Burrows ! Llyn Fach ! ! Ed. 



1587. heterophyllus, Schreb. Various-leaved Pondweed. Dyfr-llys 

 amryddail. 

 Rare. Scarce. Native. Lacustral. 



Cromlyn Bog. Gutch. Phyt. 1842. p. 180. Reens near 

 Pengam, Grangetown, etc. J.S. Kenfig Pool ! ! Ed. 



varians, (Fryer). 



Glamorgan. Miss Armitage. sp. Supp. Top. Bot. 



1590. lucens, Linn. Great Pondweed. Dyfr-llys disclaer. 

 Rare. Scarce. Native. Lacustral. 



Kenfig Pool ! ! 4-7-08. An older record occurs for the same 

 locality. Hb. Motley, Ridd. 



1595' perfoliatUS, Linn. Perfoliate Pondweed. Dyfr-llys trydwll. 

 Rare. Scarce. Native. Lacustral. 



Near Hensol Lake ; St. Pagans. J.S. Penllergare ; Peterston. 

 Ridd. Kenfig Pool ! ! Ed. 



1596. crispus, Linn. Curled Pondweed. Dyfr-hys crych. 

 Local. Frequent. Native. Lacustral. 



Neath Canal. Gutch. Phyt. 1842. St.-y-Nyl, etc. J.S. 

 Kenfig ! H. Cowbridge. J.E. St. Fagans. /. and V. Roath Park 

 Lake ! V. Mynydd Garngoch ; Crumlin Bog ; Neath ; Glyn Neath ; 

 Porthcawl ; Peterston ; Reynoldstone. Ridd. Oxwich ! Cadoxton 

 Moor ! Flemingstone Moor ! R. Ddaw ! Ed. 



• 597« densus, Linn. Opposite-leaved Pondweed. Dyfr-llys tewdws. 

 Local. Frequent. Native. Lacustral. 



Common in district. J.S. A statement with which I agree, 

 notwithstanding the paucity of definite records. Ed. Pontrhondda ; 

 Mardy. Fl. Rhondda. Ewenny 1 Miss B. and M.A.D. Talygam; 



