Lysimachia nemorum
Primulaceae
May to August
It is found throughout the country except for parts of
Lincolnshire and the East Midlands.
See the BSBI distribution map for Yellow Pimpernel
It grows in damp deciduous woodland, grassland and
hedges.
It has declined where deciduous trees have been
replaced by conifers.
Yellow Pimpernel is a native, prostrate, creeping, perennial
herb growing up to 40cm.
The bright yellow flowers are 5-merous and up to 8mm.
They open in dry, sunny weather.
The petals are bright yellow.
The stamens have yellow filaments and anthers.
The ovary and the long, single style are green and the
stigma capitate.
The sepals are pale green, lanceolate and shorter than
the petals.
Leaves are dark green, oval, pointed, and opposite and up
to 4cm.
Previous page: Yellow Iris
Next page: Yellow-rattle
Yellow Pimpernel in woodland, West Dorset
5-merous flower, style (shadows of stamens)
Reduced brightness to show style, stigma
and ovary
Close-up of 5 yellow stamens
Close-up of ovary, style and capitate stigma
Side view- 5 anthers and a single style
Lanceolate sepals
Long flower stem
Opposite, pointed-oval leaves
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