Milk Parsley

Peucedanum palustre

Confined to the Broads of Norfolk only.

The two plants are not only similar in appearance, but also grow in similar habitats, although they may be told apart in the following manner: P. palustre has hollow, often purplish stems, pinnatifid leaf lobes and deflexed bracteoles; while S. carvifolia has solid, greenish stems, entire or sometimes lobed leaf-lobes and erecto-patent bracteoles.

Also, when the two plants are in fruit, another difference becomes apparent: the three dorsal ridges on the fruit of S. carvifolia are winged, while those on the fruit of P. palustre are not.

Foodplant for the Swallowtail Butterfly.