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Patuxent Research Refuge, Maryland
USFWS:PRR	Myriophyllum aquaticum (Vell.) Verdc. PRR000224Bill Harms   68992011-08-13 United States, Maryland, Anne Arundel, Patuxent Research Refuge--North Tract--Lake Allen; Along shore of Lake Allen east of dam, 39.081426 -76.732366, 34m Full Record Details
USFWS:PRR	Rotala ramosior L. PRR005365Helen Lowe Metzman   192021-08-07 United States, Maryland, Anne Arundel, Patuxent Research Refuge--North Tract--New Marsh; by ditch Full Record Details
USFWS:PRR	Proserpinaca palustris L. PRR005392Helen Lowe Metzman   432021-10-28 United States, Maryland, Prince George's, Patuxent Research Refuge--Central Tract--Schafer Pond, 39.038376 -76.77077, 23m Full Record Details
USFWS:PRR	Proserpinaca pectinata Lam. PRR004342Bill Harms   93212016-07-06 United States, Maryland, Prince George's, Patuxent Research Refuge--Central Tract--Duvall Pond 2; North side of Duvall 2, along River Road, 39.042515 -76.784426, 25m Full Record Details
USFWS:PRR	Proserpinaca pectinata Lam. PRR004340Bill Harms   93222016-07-06 United States, Maryland, Prince George's, Patuxent Research Refuge--Central Tract--Duvall Pond 2; North side of Duvall 2, along River Road, 39.042515 -76.784426, 25m Full Record Details
USFWS:PRR	Proserpinaca pectinata Lam. PRR000222Bill Harms   67412011-07-02 United States, Maryland, Anne Arundel, Patuxent Research Refuge--North Tract--Cattail Pond area; Cattail Pond, 225 feet west of Wildlife Loop, 39.0592 -76.7386, 23m Full Record Details
USFWS:PRR	Proserpinaca pectinata Lam. PRR003310Bill Harms   80252013-07-09 United States, Maryland, Anne Arundel, Patuxent Research Refuge--North Tract--Blue Heron Pond; Southwest side of Blue Heron Pond, 1000 feet west of gate, 39.069245 -76.825833, 34m Full Record Details
USFWS:PRR	Proserpinaca pectinata Lam. PRR003418Bill Harms   80972013-08-05 United States, Maryland, Anne Arundel, Patuxent Research Refuge--North Tract--Blue Heron Pond; Blue Heron Pond, 940 feet west of gate, 39.069474 -76.825781, 33m Full Record Details
USFWS:PRR	Proserpinaca pectinata Lam. PRR004256Bill Harms   92952016-06-25 United States, Maryland, Anne Arundel, Patuxent Research Refuge--North Tract--Blue Heron Pond; West side of Blue Heron Pond, 39.069569 -76.825798, 32m Full Record Details
USFWS:PRR	Proserpinaca palustris var. crebra Fernald & Griscom PRR004343Bill Harms   93202016-07-06 United States, Maryland, Prince George's, Patuxent Research Refuge--Central Tract--Snowden Pond; Snowden Pond, east side below woods near outlet, 39.051979 -76.812863, 45m Full Record Details
USFWS:PRR	Proserpinaca palustris var. crebra Fernald & Griscom PRR002033N. Hotchkiss   53561937-07-28 United States, Maryland, Prince George's, Patuxent Research Refuge--Central Tract--South of Duvall Bridge; Near Duvall Bridge, 39.04502 -76.788666, 23m Full Record Details
USFWS:PRR	Proserpinaca palustris var. crebra Fernald & Griscom PRR002032F. M. Uhler   s.n.1948-09-28 United States, Maryland, Prince George's, Patuxent Research Refuge--Central Tract--Snowden Pond; South side of Snowden Pond, 39.052084 -76.815021, 46m Full Record Details
USFWS:PRR	Proserpinaca palustris var. crebra Fernald & Griscom PRR002031F. M. Uhler   s.n.1962-11-07 United States, Maryland, Prince George's, Patuxent Research Refuge--Central Tract--Knowles Marsh 1; Knowles Marsh Unit 1, 39.04574 -76.79688, 26m Full Record Details
USFWS:PRR	Proserpinaca palustris var. crebra Fernald & Griscom PRR002030F. M. Uhler   s.n.1968-03-07 United States, Maryland, Prince George's, Patuxent Research Refuge--Central Tract--Knowles Marsh 2; Knowles Marsh Unit 2, west side, 39.0444 -76.7944, 26m Full Record Details
USFWS:PRR	Proserpinaca palustris var. crebra Fernald & Griscom PRR000223Bill Harms   67072011-06-25 United States, Maryland, Anne Arundel, Patuxent Research Refuge--North Tract--Bullfrog and Kingfisher Ponds area; West side of Kingfisher Pond, 1100 feet north of north road on Secret Service Range, 39.0597 -76.7447, 25m Full Record Details
USFWS:PRR	Proserpinaca palustris var. crebra Fernald & Griscom PRR004130Bill Harms   89202015-05-29 United States, Maryland, Anne Arundel, Patuxent Research Refuge--North Tract--Pitch Pine Wetlands; Pitch Pine Wetlands, 39.040525 -76.758603, 23m Full Record Details
USFWS:PRR	Proserpinaca palustris var. crebra Fernald & Griscom PRR004423Bill Harms   93662016-08-11 United States, Maryland, Prince George's, Patuxent Research Refuge--Central Tract--Uhler Marsh 1; North side of Uhler Marsh 1, 39.0566 -76.8144, 33m Full Record Details
USFWS:PRR	Proserpinaca palustris var. crebra Fernald & Griscom PRR005236Bill Harms   100882019-10-05 United States, Maryland, Anne Arundel, Patuxent Research Refuge--Mill Race Road East; 1875 feet north of Duvall Bridge, 39.049745 -76.78849, 28m Full Record Details

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