Musk Mallow

Flowers of musk mallow, Malva moschata.

Photo taken in Whiteknights Park, Reading, UK, on 2014-07-06.

Amphibious Bistort

Amphibious bistort, Persicaria amphibia, growing in long grass.

Photos taken in Whiteknights Park, Reading, UK, on 2014-07-20.

Purple Loosestrife

A flower of purple loosestrife, Lythrum salicaria.

The full plants look like this:

Photos taken in the field below Chazey Wood, near Caversham, UK, on 2014-08-09.

Rhododendron

A Rhododendron flower head from four years ago: probably a Rhodendron ponticum hydrid.

Photo taken in the Wilderness, Whiteknights Park, Reading, UK, on 2010-05-31.

Spiny Sow-Thistle

Flower heads of spiny sow-thistle, Sonchus asper.

It is the leaves that are spiny:

A view of the whole plant:

Photos taken in Whiteknights Park, Reading, UK, on 2014-07-07.