| althaea | (noun) any of various plants of the genus Althaea; similar to but having smaller flowers than genus Alcea | Synonyms: althea, hollyhock |
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| brodiaea | (noun) any of several plants of the genus Brodiaea having basal grasslike leaves and globose flower heads on leafless stems resembling those of genus Allium | - |
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| spiraea | (noun) any rosaceous plant of the genus Spiraea; has sprays of small white or pink flowers | Synonyms: spirea |
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| (noun) a Japanese shrub that resembles members of the genus Spiraea; widely cultivated in many varieties for its dense panicles of flowers in many colors; often forced by florists for Easter blooming | Synonyms: Astilbe japonica, spirea |