Outside the Sussex Wildlife Trust's offices at Woods Mill near Henfield there are a few clumps of spring snowflake (Leucojum vernum) that are putting on a particularly fine show this year.
This is not a native plant, but it does escape from gardens from time to time and has become naturalised in parts of the UK.
These examples are slightly unusual inasmuch as they have yellow instead of green spots towards the tips of the petals and might therefore be the form known as var. carpathicum, also quite widely grown.
The larger tree second from left behind the clump is a wild service, Sorbus torminalis.