Alyssum alyssoides
Species of flowering plant in the cabbage family
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Description
This is a hairy annual or biennial herb producing stems which grow upright or lie along the ground to a maximum length of 30 to 40 centimeters (12 to 16 in). It produces yellow flowers May–July that fade to white with four small petals about 1.5–3 mm long. The fruit is a round, hairy capsule up to half a centimeter long. The hairs are branched, often stellate (star shaped). The seeds are tiny, 1–2 mm long, with minuscule wings. The leaves are simple, narrowly oblanceolate or linear with smooth margins, and are alternately arranged.
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Molecular phylogeneticsBranch of phylogeny that analyzes genetic, hereditary molecular differencesMicrometreUnit of length; one millionth of a metrePerennialPlant that lives for more than two yearsDeciduousPlants that shed leaves seasonallyGram-negative bacteriaGroup of bacteria that do not retain the Gram stain used in bacterial differentiationLegumePlants in the family Fabaceae