Research > Reference Library > Trees of Canada JOIN MAIL LIST: SEARCH: Discover GF Research Education Newsroom How to Help click image to enlarge Hop-Tree hop-treePtelea trifoliata L. Fruit of the hop-tree can be substituted for 'hops' in flavouring beer. Fruits remain on the tree throughout most of the winter. Buds are partially sunken into the (twig) bark and are not visible until after leaf-fall.
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