Collecting site

Llyn Cwellyn (Quellan), Caernarvonshire (Caernarvon, Carnarvonshire, Arfon), North Wales, United Kingdom

latitude: 53.066666     53 04 00 N
longitude: -4.15     004 09 00 W

[Precision of location: Alexandria Digital Library (with NGA GNDB data)]
[Site Named Here by name of island, bay, strait, lake, river, or stream, etc., named in source publication]

Collected here:

Stenostomum grabbskogense Luther, 1960	Nov 1968 - Oct 1969	littoral		calcium poor lake (1.7 mg/l).
Stenostomum leucops (Duges, 1828)	Nov 1968 - Oct 1969	littoral		calcium poor lake (1.7 mg/l).
Macrostomum johni Young, 1972	Dec 1968, Feb 1969, Feb 1970	littoral	stones, vegetation	vegetational littoral, east shore (O.S. Ref. 23560550). Vegetation: Agropyron repens, Juncus subnodulosus, Littorella lacustris, and Phalaris arundinacea. Phalaris arundinacea (most specimens)
Stenostomum unicolor Schmidt, 1848	Nov 1968 - Oct 1969	littoral		calcium poor lake (1.7 mg/l).
Microstomum lineare (Müller, 1773)	Nov 1968 - Oct 1969	littoral		calcium poor lake (1.7 mg/l).
Macrostomum johni Young, 1972	Nov 1968 - Oct 1969	littoral		calcium poor lake (1.7 mg/l).
Prorhynchus stagnalis Schultze, 1851	Nov 1968 - Oct 1969	littoral		calcium poor lake (1.7 mg/l).
Geocentrophora baltica (Kennel, 1883)	Nov 1968 - Oct 1969	littoral		calcium poor lake (1.7 mg/l).
Geocentrophora sphyrocephala de Man, 1876	Nov 1968 - Oct 1969	littoral		calcium poor lake (1.7 mg/l).
Bothrioplana semperi Braun, 1881	Nov 1968 - Oct 1969	littoral		calcium poor lake (1.7 mg/l).
Otomesostoma auditivum (Forel & du Plessis, 1874)	Nov 1968 - Oct 1969	littoral		calcium poor lake (1.7 mg/l).
Gieysztoria infundibuliformis (Fuhrmann, 1894)	Nov 1968 - Oct 1969	littoral		calcium poor lake (1.7 mg/l).
Castrella (Castrella) truncata (Abildgaard, 1789)	Nov 1968 - Oct 1969	littoral		calcium poor lake (1.7 mg/l).
Castrada (Castrada) lanceola (Braun, 1885)	Nov 1968 - Oct 1969	littoral		calcium poor lake (1.7 mg/l).
Castrada (Castrada) viridis Volz, 1898	Nov 1968 - Oct 1969	littoral		calcium poor lake (1.7 mg/l).
Strongylostoma elongatum Hofsten N, 1907	Nov 1968 - Oct 1969	littoral		calcium poor lake (1.7 mg/l).
Rhynchomesostoma rostratum (Müller, 1774)	Nov 1968 - Oct 1969	littoral		calcium poor lake (1.7 mg/l).
Mesostoma lingua (Abildgaard, 1789)	Nov 1968 - Oct 1969	littoral		calcium poor lake (1.7 mg/l).
Gyratrix hermaphroditus Ehrenberg, 1831	Nov 1968 - Oct 1969	littoral		calcium poor lake (1.7 mg/l).
Gieysztoria infundibuliformis (Fuhrmann, 1894)	Jul 1969			littoral zone of upland, calcium-poor 'unproductive' lakes in Caernarvonshire, N. Wales.
Macrostomum johni Young, 1972	Dec 1968			littoral zone of upland, calcium-poor 'unproductive' lakes in Caernarvonshire, N. Wales.
Macrostomum johni Young, 1972	Feb 1969			littoral zone of upland, calcium-poor 'unproductive' lakes in Caernarvonshire, N. Wales.
Castrada (Castrada) lanceola (Braun, 1885)	Feb 1969			littoral zone of upland, calcium-poor 'unproductive' lakes in Caernarvonshire, N. Wales.