Meet at front entrance of Woolwich Underground Station (TQ438790) at 11:00 (11:00-16:00). This potentially bracing walk along the Thames Towpath towards Tripcock Ness will take in complex mixtures of coastal grazing and saltmarsh remnant species as well as diverse assemblages of urban neophyte plant communities and habitat creation schemes. In addition to general recording, we will also be looking for populations of Apium graveolens (Wild Celery), Bolboschoenus laticarpus (Inland Club-rush), Cochlearia anglica (English Scurvygrass), Cynodon dactylon (Bermuda-grass), Inula conyzae (Ploughman's-spikenard), Juncus compressus (Round-fruited Rush), J. gerardii (Saltmarsh Rush), Lotus tenuis (Narrow-leaved Bird's-foot-trefoil), Myosotis ramosissima (Early Forget-me-not), Plantago maritima (Sea Plantain), Securigera varia (Crown Vetch), Trifolium subterraneum (Subterranean Clover), Tripolium pannonicum (Sea Aster) & Triglochin maritima (Sea Arrowgrass), all of which are increasingly uncommon or rare in Greater London. Suitable for beginners and experts.