Friday, July 01, 2016

Another Swindon "speciality"




This is Narrow-leaved Bird's-foot Trefoil (Lotus glaber, formerly known as L. tenuis) and it grows in great quantities in West Swindon (here in short grassland at Shaw Forest Park, 30th June 2016). 

When I moved to Swindon from Frome, about 40 miles to the SW, there were a few plants that really struck me e.g. Stone Parsley, Goat's-rue... This should have been another one, except I completely overlooked it (mistaking it for normal Bird's-foot TrefoilI, I suppose). I've only heard about it in the last couple of days, thanks to a couple of Swindon-based colleagues in the Facebook group "Wild Flowers of Britain". Time for a stroll in the park... 






There really is a lot of it!






Here's a single plant growing in longer grass, which actually makes it easier to see the narrow leaflets that are the key identifying feature.




Close-up of those narrow leaflets. I think my close-up camera must have had rain on the lens!






[Image source: http://delta-intkey.com/angio/www/papilion.htm]


Old illustration showing the differences between the three commoner Bird's-foot Trefoils. Lotus glaber is the one in the middle. The one on the left is normal Bird's-foot Trefoil (Lotus corniculatus). The one on the right is Large Bird's-foot Trefoil (Lotus pedunculatus, formerly L. majorL. uliginosus).

Below is my own educational presentation of Lotus glaber (left) and Lotus corniculatus (right):



Lotus glaber and Lotus corniculatus



And finally, here's a photo from a re-visit on 11th July, when the weather was a lot brighter!


Narrow-leaved Bird's-foot Trefoil (Lotus glaber)




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