Monthly Archives: June 2015

Filago vulgaris in the city of Sheffield

Urban flora fascinates me. One of the reasons is that the exceptional floristic diversity found in urban habitats challenges my ideas about wildlife and conservation. We tend to think of urban development as intrinsically adverse to biodiversity, however, re-colonisation can be quick and novel habitats can be rich and surprisingly biodiverse.

This positive aspect needs of course to be weighed up against irreversible loss of some habitats such as nutrient poor mires that can disappear and are never replaced.

P1030273But I also enjoy urban floras because so many unexpected plants turn up! and because it transforms my weekly trips to the supermarket into genuine botanical expeditions. Above and below are pictures of Filago vulgaris, the common cudweed, in a waste ground in (SK337889) Walkley, Sheffield, UK, near home. I had spotted the hundreds of tiny rosettes early this spring but couldn’t work out whether it would turn out to be a Filago or Gnaphalium uliginosum, the marsh cudweed.

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Malling Toadflax

When I saw the roads signs for West Malling last week I knew I had to make a small detour and look for the largest known population of Chaenorhinum origanifolium in Britain and Ireland. I first encountered this rare alien plant on a wall in Oxford – see my new-to records page. It did not take long to locate the West Malling population on Swan Street (TQ682577). There is a very large number of mature plants, that were in full bloom, and a large number of seedlings:

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Polypogon monspeliensis

There is much written about the spread of Polypodon viridis in Britain and Ireland but its close relative Polypogon monspeliensis may also be spreading. I am posting here a few pictures of P. monspeliensis, observed as a casual in a car park during my recent family holiday in Sussex (plants located at TQ452172). Note the resemblance with P. viridis inflorescences – apart from the long awns!

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