Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Dryopteris carthusiana (Vill.) H.P. Fuchs (syn. D. spinulosa (O.F. Muell.) O. Kuntze) is a species of fern native to damp forests throughout the Holarctic Kingdom. It is known as the Narrow buckler fern in the United Kingdom, and as the Spinulose wood fern in North America. It is a tetraploid of hybrid origin, one parent being Dryopteris intermedia, known in North America as the intermediate wood fern, and an unknown, apparently extinct species dubbed Dryopteris semicristata, which is also the presumed parent of the hybrid-origin Dryopteris cristata.

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