Potamogeton alpinus Balb. Conservation status: C First record: (Jenyns,1827?) RCL Howitt, 1959 Last record: JR Akeroyd & CD Preston 1987 Never found by Babington, Bennett & Fryer (teste Fryer) CEM.ann. Botanic Gardens pond, CEM.ann. 48 S of Manea, RCL Howitt, 6.9.1959, det Dandy & Taylor, BM. Near Manea, 482.891, PD Sell, 17.8.1961, det. Dandy & Taylor, CGE. Manea, –not seen on 1973 excursion, CJ Cadbury. Manea Pit. water level v. high, not found, CD Preston, 1985. SE side of Manea pit, 482.890, 3 fl. clumps, confined to one small area, CD Preston & PD Sell, 20.8.1986, CGE. (Nat. in Cambs, 29:76) Clay pit, Manea, 481.890, JO Mountford, 6.8.1987, [R]. SE side of Manea pit, a flooded clay pit, SE of Manea, 482.890, with Lemna trisulca and Ranunculus circinatus, JR Akeroyd & CD Preston 87/109, 31.8.1987, CGE. 56 Bottisham, L.J., 26.6.1827, BATHG. Bottisham Fen Bab.1860,248 & Bab.MS.Fl.782. Potam alpinus P. rufescens Burwell fen, Gibson,1848,310. Burwell; GSG. Bab.1860,248 & Bab.MS.Fl.782.
