Fumaria officinalis, the common fumitorydrug fumitory or earth smoke, is a herbaceous annual flowering plant in the poppy family Papaveraceae. It is the most common species of the genus Fumaria in Western and Central Europe.


It is an herbaceous annual plant that grows weakly erect and scrambling, with stalks about 10–50 cm (3.9–19.7 in) long. It has slender green leaves.[1] Its pink 7–9 mm (0.28–0.35 in) flowers appear from April to October in the northern hemisphere,[2] or May to September in the UK.[1] They are two lipped and spurred, with sepals running a quarter the length of the petals.[2] The plant commonly has more than 20 and up to 60 flowers per spike.[3] The fruit is an achene containing one seed. It is approximately globular, slightly wider than high and with an apical notch.[3] It contains alkaloidspotassium salts, and tannins and is also a source of fumaric acid.[4]

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