Revision of the American species of Dryopteris of the group of D. opposita
By: by Carl Christensen
Series: Skrifter, naturvidenskabelig og mathematisk afdeling -- 7 Række, IV, 4
Publisher: B. Lunos bogtr.
Published: 1907
Place of publication: København
Language: eng; lat
Number of pages: 90
Notes: D. Kgl. Danske vidensk. selsk. skrifter, 7. raekke, Naturvidensk. og mathem. afd.; IV. 4: 247-336.

Pages also numbered [247]-336.

Includes bibliographical references and index.

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