Cover Illustration: One of two fine Black Poplars surviving near the
River Cam at Fen Ditton (see article by Graham Easy) Ray Symonds
Contents of Volume 33 (1991)
Editorial (Philip Oswald) 2
The Wildlife Trust for Bedfordshire and Cambridgeshire (Katherine
Campbell) 3
The change in status of raptors in old Cambridgeshire
since 1945 (P.M.M. Bircham and W.J. Jordan) 4
Macro-invertebrates as water quality indicators in Bin Brook,
a polluted Cambridge clay stream (Steve Boreham) 4
The National Trust Wicken Fen Local Management Committee 14
Edited extracts from the Annual Report for 1989 (J.M. Lock)
20
Orchis morio in old Cambridgeshire (Robert Payne) 23
Ray's Butterbur still in Paradise! (S.M. Walters 25)
The Revd John Hemsted (1747?-1824) (Philip Oswald) 26
The cherries and plums of Cambridgeshire (Peter Sell) 29
The Magog Trust (Christopher South) 39
Review:
- Wild Flowers of the Mediterranean by I. and P. Schönfelder
(S.M. Walters) 41
Thorea, Bangia and other freshwater red algae
in Cambridgeshire (Hilary Belcher and Erica Swale) 42
Black Poplars Populus nigra in Cambridgeshim (Graham
Easy) 45
A mystery field at Swavesey in 1990 (Gigi Crompton) 49
Southern European cornfield weeds growing at Newmarket (Graham
Easy) 50
Lemna minuscula in Cambridge (CD. Preston) 52
Wall Lettuce Mycelis muralis in the Cambridge area (S.M.
Walters) 54
Cambridgeshire Flora Group (Gigi Crompton) 60
Vascular plant records (Gigi Crompton and Derek Wells) 65
Bryophyte records (CD. Preston and HL.K. Whitehouse) 67
Charophyte records (C.D. Preston) 70
Weather notes for Cambridgeshire 1990 (J.W. Clarke) 70
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