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Potamogeton perfoliatus x crispus = P. x cooperi (Fryer) Fryer "Cooper's Pondweed"

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**Search results, herbarium specimens**
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	taxon	locality	collectors		date	institution
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	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC64 Mid-west Yorkshire, Ilkley	Albert Wilson		8/1910	MANCH
+	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC64 Mid-west Yorkshire, River Wharfe at Ilkley	A Wilson		8/1910	BIRM
	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC56 Nottinghamshire, East Retford	George Taylor		10/7/1946	SLBI
	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC56 Nottinghamshire, Gringley on the Hill	George Taylor		7/6/1944	SLBI
	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC56 Nottinghamshire, Wiseton,Drakeholes	George Taylor		2/8/1941	MANCH
	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC86 Stirlingshire, Falkirk				SLBI
	Potamogeton perfoliatus x crispus = P. x cooperi	IE, VCH39 Co. Antrim, Templepatrick				SLBI
+	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC20 Hertfordshire, Grand Union Canal at Little Tring	G Taylor		2/8/1939	BIRM
	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC86 Stirlingshire, Falkirk	John Stirling Stirling Robert Kidston	Botanical Exchange Club of The British Isles	1/9/1897	ABS
+	Potamogeton perfoliatus x crispus = P. x cooperi	IE, VCH39 Co. Antrim, Sixmile River above Templepatrick	Samuel Alexander Stewart		10/8/1894	BIRM
	Potamogeton perfoliatus x crispus = P. x cooperi	IE, VCH39 Co. Antrim, Templepatrick	Samuel Alexander Stewart		10/8/1894	ABS
	Potamogeton perfoliatus x crispus = P. x cooperi	IE, VCH39 Co. Antrim, Templepatrick	Samuel Alexander Stewart		10/8/1894	SLBI
	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC24 Buckinghamshire, Marsworth, Startop's End	James Edgar Dandy Job Edward Lousley		17/6/1944	SLBI
	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC39 Staffordshire, Lichfield	Job Edward Lousley	Job Edward Lousley	7/1949	SLBI
+	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC57 Derbyshire, Derby	William Richardson Linton		20/8/1900	BIRM
	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC55 Leicestershire, Loughborough	Albert Bruce Jackson	Botanical Exchange Club of The British Isles Albert Bruce Jackson Augustin Ley	8/1898	BIRM
	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC57 Derbyshire, Shirley Cultivated	William Richardson Linton	Botanical Exchange Club of The British Isles Augustin Ley William Richardson Linton	20/8/1900	BIRM
	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC58 Cheshire, Chester	Christopher Robert Billups	Botanical Exchange Club of The British Isles Augustin Ley	24/7/1897	BIRM
	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC64 Mid-west Yorkshire, Ilkley	Albert Wilson	Botanical Exchange Club of The British Isles Augustin Ley	8/1910	BIRM
	Potamogeton perfoliatus x crispus = P. x cooperi	IE, VCH39 Co. Antrim, Templepatrick	Samuel Alexander Stewart	Botanical Exchange Club of The British Isles Augustin Ley	10/8/1894	BIRM
+	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC86 Stirlingshire, Falkirk	Robert Kidston		8/8/1892	BIRM
	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC64 Mid-west Yorkshire, Wetherby	J Jackson	George Stephen West	1885	BIRM
+	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC55 Leicestershire, Grand Union Canal at Loughborough	Albert Bruce Jackson		8/1898	BIRM
	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC55 Leicestershire, Loughborough Canal	Albert Bruce Jackson	Botanical Exchange Club of The British Isles	8/1898	ABS
	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC57 Derbyshire, Ockbrook	Alexander Cossart Hasse	Alexander Cossart Hasse	6/1884	MANCH
+	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC29 Cambridgeshire, Parson Ware Drove, Benwick	Alfred Fryer		28/7/1892	BIRM
+	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC29 Cambridgeshire, Parson Ware Drove, Benwick	Alfred Fryer		22/8/1892	BIRM
	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC29 Cambridgeshire, Parson Ware Drove, Benwick	Alfred Fryer	Botanical Exchange Club of The British Isles Augustin Ley	28/7/1892	BIRM
	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC29 Cambridgeshire, Parson Ware Drove, Benwick	Alfred Fryer	Augustin Ley	22/8/1892	BIRM
	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC55 Leicestershire, Loughborough	Alfred Fryer E F Cooper	Botanical Exchange Club of The British Isles Augustin Ley	8/1891	BIRM
	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC58 Cheshire, Chester	Christopher Robert Billups	Alfred Fryer	8/1889	SLBI
+	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC58 Cheshire, Chester (12 miles south of)	Christopher Robert Billups		11/9/1891	MANCH
	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC58 Cheshire, River Dee Cultivated	Alfred Fryer	Augustin Ley	31/8/1892	BIRM
+	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC58 Cheshire, River Dee 12 miles above Chester	Alfred Fryer		31/8/1892	BIRM
	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC86 Stirlingshire, Falkirk	John Stirling Stirling Robert Kidston	Alfred Fryer Arthur Bennett	8/1894	MANCH
	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC86 Stirlingshire, Falkirk	John Stirling Stirling Robert Kidston	Augustin Ley Alfred Fryer	8/8/1892	BIRM
	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC86 Stirlingshire, Falkirk	John Stirling Stirling Robert Kidston	Alfred Fryer	24/8/1894	SLBI
	Potamogeton perfoliatus x crispus = P. x cooperi	GB, Ambiguous locality (GB), River Dee Cultivated	Alfred Fryer	Allan Octavian Hume Arthur Bennett	31/8/1892	SLBI
	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC55 Leicestershire, Loughborough	Edgar Franklin Cooper	Charles Bailey	4/8/1890	MANCH
	Potamogeton perfoliatus x crispus = P. x cooperi	GB, VC55 Leicestershire, Loughborough	Edgar Franklin Cooper	Botanical Exchange Club of The British Isles Charles Bailey	8/1891	MANCH

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