?Alsophila matthewii
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Notes
I have only seen the specimen from the type collection at Kew; it is a small sterile frond, evidently from an immature plant, said to have been borne on a slender trunk 60 cm high. As the specimen was found in a much-collected locality (Mt Maquiling, Luzon, at 1100 m), it probably belongs to a species already known, possibly C. heterochlamydea Copel., but I am very uncer- tain of this.