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hoary alison

DEFINITIONS OF: hoary alison

1

n tall European annual with downy grey-green foliage and dense heads of small white flowers followed by hairy pods; naturalized in North America; sometimes a troublesome weed

Synonyms:
Berteroa incana, hoary alyssum
Type of:
herb, herbaceous plant
a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests
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