Definition that contains adventive
- hemlock large branching biennial herb native to Eurasia and Africa and adventive in North America having large fernlike leaves and white flowers; usually found in damp habitats; all parts extremely poisonous
- diplotaxis tenuifolia yellow-flowered European plant that grows on old walls and in waste places; an adventive weed in North America
- euphorbia lathyris poisonous Old World spurge; adventive in America; seeds yield a purgative oil
- bastard feverfew tropical American annual weed with small radiate heads of white flowers; adventive in southern United States
- stinking goosefoot European goosefoot with strong-scented foliage; adventive in eastern North America
- winter fern large branching biennial herb native to Eurasia and Africa and adventive in North America having large fernlike leaves and white flowers; usually found in damp habitats; all parts extremely poisonous
- mus rose erect Old World perennial with faintly musk-scented foliage and white or pink flowers; adventive in United States
- chenopodium vulvaria European goosefoot with strong-scented foliage; adventive in eastern North America
- angelica sylvestris European herb with compound leaves and white flowers; adventive on Cape Breton Island
- parthenium hysterophorus tropical American annual weed with small radiate heads of white flowers; adventive in southern United States