Rosebay Willowherb : Chamerion angustifolium
Plant : Flowering towards the end of the season, it is a good source of pollen and nectar for colonies raising its winter workers and collecting winter stores. Rosebay willowherb produces tall stems, up to 1.5 m high. Bright pink flowers grow horizontally, in a spiral formation on the top part of the stem, while the rest of the stem has 10 cm leaves arranged in a similar spiral arrangement. Its habitat includes hedgerows, margins of woodland and common. It is particularly quick to establish in fire damaged areas of woodland or disturbed wasteland.
Flower : Rosebay willowherb flowers between July and September. Each flower is pink, with 4 petals, 8 stamens and an inferior ovary.
Pollen : The pollen load of rosebay willowherb is dark blue. The grain is round, although the pores give it a triangular appearance. It is approximately 75 um across. There are three pore type apertures. The surface is smooth and the exine is thin.
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