A blue form also exists.

Unlike the round stems of Bog Pimpernel, Scarlet Pimpernel has square stems, as does the similar, but un-related, Creeping Jenny.

Not to be conused with: 'Poor Man's Asparagus' [a plant with similar nickname].

All parts of Scarlet Pimpernel are poisonous, containing the Cucurbitacins, Arvenin I, Arvenin II, Arvenin III and Arvenin IV and Cucurbitacin B as well as triterpene saponins and oxalates. All Arvenins are glucopyranosides. Cucurbaticins bind to microtubules and are therefore cytotoxic. All parts of the plant are poisonous, especially the roots, and consumption of it can result in gastrointestinal disturbances, trembling and kidney damage. Related to the Cucurbaticins (of which Cucurbaticin B is just one) are the Arvenins, of which four are know, Arvenin I, Arvenin II, Arvenin III and Arvenin IV. Shown is just one, Arvenin I. Arvenin I is just Cucurbaticin B with a glycoside attached. The same poisons are also in White Bryony.

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