Cultivars Populus nigra
a fastigiate black poplar cultivar of plantierensis group, in hungary
plantierensis group. group of clones derived crossing italica p. nigra ssp betulifolia @ plantières nursery near metz in france in 1884; similar italica (and mistaken it) broader crown, , better adapted cool, humid climate of northwest europe, true lombardy poplar not grow well. both male , female clones grown. tree commonly grown in great britain , ireland lombardy poplar .
manchester poplar . cultivar of subsp. betulifolia planted in northwest england. male clone, , threatened poplar scab disease.
gigantea . fastigiate clone, of unknown origin, rather broader, more vigorous crown italica . female clone.
afghanica (syn. thevestina ). most, if not all, specimens of variety afghanica of single clone, , many botanists therefore treat cultivar rather botanical variety. fastigiate, similar italica , striking whitish bark; differs italica in being female clone. common fastigiate poplar in southwest asia , southeast europe (the balkans), introduced during ottoman empire period.
^ bean, w. j. (1980). trees , shrubs hardy in british isles vol. 3. john murray isbn 0-7195-2427-x
^ stace, c. a. (1971). manchester poplar. watsonia 8: 391-393.
^ arboricultural information exchange: manchester poplar disease
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