Rodney Burton, compiler of the 1983 Flora of the London area, was at Woodlands farm recently, and was able to confirm that Corky-fruited Water Dropwort (Oenanthe pimpinelloides) does indeed occur on the Bexley part of the farm, the greater part of which is in Greenwich where is was already clear that it was present. He also identified a number of grass species there, including Meadow Barley, and found Grass Vetchling (Lathyrus nissolia) which is, in fact, a member of the Pea family.
In October last year ‘BW’ reported that the Dropwort, which is scarce in London, had been found at a site in the Coldblow area in summer 2014: