The London plane tree is, as its name suggests, a familiar sight along the roadsides and in the parks of London. An introduced and widely planted species, it is tough enough to put up with city…

This small, round sea urchin is (unsurprisingly!) green in colour and can be found on rocky shores around the UK.

This large round urchin is sometimes found in rockpools, recognisable by its pink spiky shell (known as a test).

A tall orchid of woodland and scrub, the broad-leaved helleborine has greenish, purple-tinged flowers that look a little 'drooping'. Strongly veined, oval leaves spiral around its stem…

The bright purple flowers of this perennial herb can be seen in a range of grassy places.

The Marsh helleborine is a beautiful orchid of fens, wet grassland and dune slacks. Growing in profusion in places, look for reddish stems and white-and-pink flowers.