PLANT HEIGHT : 20–50cm.
FLOWER SIZE : 1.7–2.1cm wide.
FRUIT : Four nutlets at base of calyx.
FLOWERING TIME : April–June.
SIMILAR SPECIES : Yellow Rattle; Large-flowered Hemp-nettle (Galeopsis speciosa) has flowers with a violet blotch.
A plant that brightens the landscape with its striking colour in spring, Yellow Archangel has unusually large flowers for a member of the mint family. Each two-lipped flower is bright butter-yellow, with red markings on the lower lip. The paired leaves are almost triangular in outline, with coarse teeth.
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