Iillustration for the article the progress of our knowledge of the flora of north america by lucien marcus underwood in popular science monthly, catpioned: "fig. 4 fac-simile of illustration by jacques-philippe cornut (1635) of the bulb-bearing fern (filix bulbifera). This with a plate of the common maidenhair in the same work formed the first published illustrations of american ferns. Date: 1635 and 1907.
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