1. Wild aster with fernlike leaves and flower heads with very narrow bright purple rays; Alberta to Texas and Mexico
   - tahoka daisy, Machaeranthera tanacetifolia

Derived forms: tansy leaf asters

Type of: wild flower, wildflower

Part of: genus Machaeranthera, Machaeranthera

• impenetrable
• impenetrableness
• impenetrably
• impenitence
• impenitency
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• imperative
• imperative form
• imperative mood
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• imperativeness
• imperator
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• imperceptibility
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• impercipient
• imperfect
• imperfect tense
• imperfectibility
• imperfectible
• imperfection
• imperfective