Rosebay Willowherb
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Chamerion angustifolium
Common & widespread throughout Britain.
Also known as Fireweed.
The leaves are spirally arranged, entire, narrowly lanceolate, and pinnately veined, the secondary leaf veins anastomosing, joining together to form a continuous marginal vein just inside the leaf margins.
The inflorescence is a symmetrical terminal raceme that blooms progressively from bottom to top, producing a gracefully tapered shape.
The flowers are 2 to 3 centimetres (3⁄4 to 1+1⁄4 inches) in diameter, slightly asymmetrical, with four magenta to pink petals and four narrower pink sepals behind.
The protruding style has four stigmas.
Flowers from June-September.