Dic·tam·nus n.  Bot. A suffrutescent herb, Dictamnus Fraxinella (the only species), with strong perfume and showy flowers. The volatile oil of the leaves is highly inflammable.
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  Dit·ta·ny n.  Bot. (a) A plant of the Mint family (Origanum Dictamnus), a native of Crete. (b) The Dictamnus Fraxinella. See Dictamnus. (c) In America, the Cunila Mariana, a fragrant herb of the Mint family.
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