Joint with the London Natural History Society. Meet at the entrance to the reserve on Old Lodge Way (TQ162923) at 11:00 (11:00-16:00).

The reserve consists of a mosaic of ancient woodland (Heriot's Wood), acid grassland, neutral grassland, scrub, streams and wetlands. In addition to general recording, we will also be looking for populations of Anemone nemorosa (Wood Anemone), Betonica officinalis (Betony), Campanula rotundifolia (Harebell), Carex distans (Distant Sedge), C. paniculata (Greater Tussock-sedge), C. pseudocyperus (Cyperus Sedge), C. strigosa (Thin-spiked Wood-sedge), Danthonia decumbens (Heath-grass), Dactylorhiza praetermissa (Southern Marsh-orchid), Pimpinella major (Greater Burnet-saxifrage), Ranunculus flammula (Lesser Spearwort), Potentilla erecta (Tormentil), Sanicula europaea (Sanicle), Silene flos-cuculi (Ragged-Robin), Succisa pratensis (Devil's-bit Scabious) & Veronica montana (Wood Speedwell) all of which are increasingly uncommon or rare in Greater London. We also aim to refind the very rare hybrid Cardamine x fringsii (C. flexuosa x pratensis). Suitable for beginners and experts.

Please contact Mark Spencer to reserve a space.