Home Page > Picture Archives >> Brassicaceae > Sisymbrium irio
Arabis charbonnelii, Descurainia irio, Erysimum irio, Norta irio, Sisymbrium irioides, Sisymbrium maximum, Sisymbrium multisiliquosum, Sisymbrium pinnatifidum
London rocket, Sisymbrium irio, is a herbal plant in the family Brassicaceae. It is an annual herb exceeding three feet in height with open, slender stem branches. The flowers are small with four pale yellow petals. The basal leaves are broad and often lobed, while the upper leaves are linear in shape and up to four inches long. The fruit is a long narrow cylindrical silique which stays green when ripe. The younger pods overtop the flowers. When dried the fruit has small red oblong seeds.[+]
The common name "London rocket" comes from its abundance after the Great Fire of London in 1666. It was also noticed on bomb sites after the Blitz, but not to the same extent.
This species is considered a weed in some areas.
QNHG (Qatar Natural History Group) and associated people, for a possibility to participate in their field excursions and to learn about local nature.