Mercurialis annua is an annual plant characterized by its upright, branching growth, reaching heights of up to 50 cm. The foliage consists of lance-shaped leaves, each finely serrated and measuring up to 6 cm in length, arranged in opposite pairs along smooth stems. Between July and October, this species bears small, greenish flowers that lack petals, with male flowers forming in clusters and female flowers occurring either singly or in small clusters.

Mercurialis annua

Mercurialis annua subsp. ambigua

Mercurialis elliptica

Mercurialis huetii

Mercurialis perennis is a herbaceous perennial that grows upright and unbranched, typically attaining a height of up to 40 cm. It spreads robustly via a network of rhizomes, creating dense mats across woodland floors. The leaves are fresh green, oval to lance-shaped, reaching lengths of up to 8 cm, with serrated margins arranged in opposite pairs along the stem. Male plants display small, pale greenish-yellow flowers on slender spikes, while female plants produce subtler flowers located at the leaf nodes, with blooming occurring from February through April.

Mercurialis perennis

Mercurialis perennis 'Cae Rhos Lligwy'

Mercurialis perennis 'Ringsbury Camp'

Mercurialis tomentosa

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