First record: WH Mills, 1948
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subsp. leersii, 343.448, Bassingbourn - Kneesworth: L 50, scattered along lane W. of Old N. Road in station between culverts between N. end of village and telephone kiosk - 5 pll. near S. culvert, 5 in middle of stretch nr 50 sign, 2 in between 3.3.1973. RW David Card Index; 343.448, RW David, 1987, [R].
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subsp. leersii (Hills Rd, verge opposite Gog Magog Farm, 18.6.1948, "sed referens ad subsp. divulsam" WH Mills, det. RW David 1983, CGE. "plant used to be fairly plentiful at intervals along N. side of road from this point almost to the Abington roundabout, (518.506), but largely, (?wholly) destroyed by road-widening in the 60s." RW David in litt. 1.12.1987.
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subsp. leersii, Abundant on steep NW facing bank on SE side of B.1047, just S of crossroads, Fen Ditton, 485.601, (Infl. <6cm; fruits 4.5mm long reddish brown; clump yellowish green.) AC Leslie, 7.9.2001.
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subsp. leersii, 542.482, Hildersham village, road banks at S. end, l.a. 28.5.1966; RW David Card Index; L 8, bank much disturbed by fencing but plant surviving 1.7.1970. RW David Card Index; Hildersham, roadside bank, [west side of road before the houses start on east side], 5429.4820, a particularly striking colony, RW David, c. 1982, in litt. "I today made a quick visit... the sedge is not only still there but regenerating well after the reconstruction of the bank. There are sizeable patches just before the 30 sign, and again opposite the entrance to the first house on the right of the road, as well as odd singles between there and the main road (A604). The grid reference is 542.481." RW David in litt. 1.12.1987.
subsp. leersii, L. 7, 524.483, Abington: several clumps with fruiting [?], developed spikes on S. "type", verge of lane opposite back-drive to the Hall 1951; verge constantly close-mown: plant could not be found 1.7.1970.
subsp. leersii, 52-48-, Abington (see above): still v. plentiful on verge of by-road S. of village - about 20 paces W. of lay-by on S. side of road, and again to E of it. Coming into fl. 6.5.1972. RW David Card Index.
subsp. leersii, Roadside, Near Gt Abington, 524.484, 6.1953 WH Mills, CGE. "very plentiful and close to type," RW David in litt. 1.12.1987.
Abington, 524.483 road verge, RW David, 20.5.1972, CGE, (Sheet G), "very good subsp. leersii", RW David in litt. 1.12.1987, (= same site as Mills above); still there, RJ Pankhurst, 1973.
C. polyphylla, Little Abington, trackway, 534.496, DA Wells, G Crompton & B Jackson, 4.7.1994.
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subsp. leersii, "plant used to be fairly plentiful at intervals along N. side of road from this [Magog Farm] point almost to the Abington roundabout, (518.506), but largely, (?wholly) destroyed by road-widening in the 60s." RW David in litt. 1.12.1987.
subsp. leersii, Abington
Cambridge, 51-50-, roadsides between roundabout and next crossroads W. 28.7.1951. RW David Card Index; RW David ann.CTW.518.506.- Verges much cleaned up and plant hard to find; but 3 clumps seen at edge of wood to N. 28.5.1966; Only 1 seen, 15 paces into wood where margins thrives bushes [?]
E end 11.7.1972. RW David Card Index.65
subsp. leersii, Kennett Heath gravel pit, 689.685, GMS Easy, det. RW David, 3.6.1975, PVT.
