[Illustration: Crested Shield Fern. Aspidium cristatum (Reading, Mass., Kingman)]
[Illustration: The Crested Shield Fern. Aspidium cristatum]
[Illustration: Clinton's Wood Fern. Aspidium cristatum, var. Clintonianum (Gray Herbarium)]
CRESTED MARGINAL FERN
Aspídium cristàtum X marginàle
Both the crested fern and Clinton's fern appear to hybridize with the marginal shield fern with the result that the upper part of the frond is like marginale and the lower like cristàtum, including the veining and texture.
This form was discovered by Raynal Dodge, verified by Margaret Slosson and described by Geo. E. Davenport, who had a small colony under cultivation in his fern garden at Medford, Mass., and to him the writer and other friends are indebted for specimens.