Hand-list of ferns and fern allies cultivated in the Royal Botanic Gardens Royal Botanic Gardens, Kew. creator text book London Printed for H.M. Stationery Off., by Darling 1906 1906 2D ed.
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ENG Catalogs Ferns QK73 K4 A237 1906 https://www.biodiversitylibrary.org/bibliography/25600 10.5962/bhl.title.25600 OTU