BRASSICACEAE (CRUCIFERAE): Mustard Family


Description of the Family:

Habit***: mostly herbs with mustard-oils (spicy or peppery)

Leaves: alternate, simple or pinnate, estipulate

Inflorescence***: bractless racemes

Flowers: perfect, regular

Sepals: 4, distinct

Petals***: 4, distinct; alternate family name describes position of 4 lobes cross-like

Stamens***: 6; 4 with long filaments and 2 with short filaments

Ovary***: superior, of 2 carpels with 2 locules and parietal placentation; locules divided by a persistent membrane (replum)

Fruit: silicle or silique

Diversity: 350 genera/3000 species

Distribution: cosmopolitan with most species in the north temerate zone

Economics: garden vegetables: 1 species (Brassica oleracea) cabbage, cauliflower, broccoli, kohlrabi, kale, brussels sprouts; mustard, radish, turnips also in this family; rapeseed oil; drug flagil


Representative species found in Arizona:

Arabis hoffmannii

Draba

Erysimum

Lepidium

Thysanocarpus


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