eryngium
- n large genus of decorative plants with thistlelike flower heads; cosmopolitan in distribution
eryngium aquaticum
- n coarse prickly perennial eryngo with aromatic roots; southeastern United States; often confused with rattlesnake master
eryngium maritimum
- n European evergreen eryngo with twisted spiny leaves naturalized on United States east coast; roots formerly used as an aphrodisiac
eryngium yuccifolium
- n coarse prickly perennial eryngo of United States thought to cure rattlesnake bite
erysimum
- n large genus of annual or perennial herbs some grown for their flowers and some for their attractive evergreen leaves; Old World and North America
erysimum allionii
- n showy erect biennial or short-lived perennial cultivated for its terminal racemes of orange-yellow flowers; sometimes placed in genus Cheiranthus