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Cruciferae
Clapham, A.R., Tutin, T.G. & Warburg, E.F. (1962) Flora of the British Isles. 2nd edition. Cambridge University Press, Cambridge
Exell, A.W. (1960) Brassicaceae FZ 1(1)
Tutin, T.G. et al. (eds) assisted by Akeroyd, J.R. & Newton, M.E. (1993) Flora Europaea. Vol. 1. (2nd edition) Cambridge University Press, Cambridge
Annual, biennial or perennial herbs. Stipules 0. Leaves alternate. Flowers in racemes, usually bisexual, hypogynous, actinomorphic. Sepals 4, free, in 2 series. Petals 4 (rarely 0). Stamens 6 (inner 4 long, outer 2 short). Ovary 2-locular. Style 1. Stigmas 2. Fruit dry, usually a dehiscent siliqua or silicula, opening from below by 2 valves, sometimes breaking into segments transversely, sometimes indehiscent. A family of predominantly introduced weeds, most of which are rather rare casuals. The name crucifer means "cross bearing", a reference to the cross shape made by the 4 petals. Closely related to the Capparaceae. Worldwide: 365 genera and 3,250 species, cosmopolitan but especially in temperate areas (Mediterranean to C Asia, Western N America). |
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