Dryopteris affinis (Lowe) Fraser–Jenkins subsp. borreri (Newm.) Fraser–Jenkins (D. borreri (Newman) ex Oberh. & Tavel; D. tavelii Rothm.)
Conservation status: C
First record: AJ Worland, 1969 45
N side of Trumpington Church, 443.548, AJ Worland, 1969.
Wall/steps of 14 Clarendon St., Cambridge, G Crompton, 28.10.1987, CGE. 46
Chesterton railway sidings, c.8 plants in the cracks of closely laid concrete blocks, GMS Easy, 6.2000. 55
D. borreri 1 good plant amongst D. filix–mas in wood on S side of horse–grazed meadow, Fulbourn Fen, M. Rickard, 1979. 57
E. end of St Edmund's Fen, CE Mitchell, 26.8.1968, det C Fraser–Jenkins, 1986, CGE. This area is now so overgrown that no ferns were found, SM Walters & G Crompton, 3.8.1988.
In Frangula carr to W. of Malcarse Drain, Wicken Fen, AC Leslie 273/74, 13.6.1974, det C Fraser–Jenkins, 1986, CGE.
Under alders & Salix, Wicken Fen, AC Leslie, 7.1976, det morphological diploid,C Fraser–Jenkins, 1986, CGE.
No Dryopteris species found after search west of Malcarse, possibly due to the fire there in 1980 or 1981, C Turner et al, Brit. Pter. Soc. excursion, 6.10.1990.
