Two flowers are properly out now, the spurge known as Mrs Robb's bonnet (Euphorbia amygdaloides subsp. robbiae) and the native early dog-violet (Viola reichenbachiana). 
The violet can be distinguished not only by its early flowering, but from the paler, more mauve tinged blossoms with a dark spur behind.
The violet is a British native and both were introduced to the reserve some years back, but persist happily and without asking too many questions.
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