Page:Parsons How to Know the Ferns 7th ed.djvu/52

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WHEN AND WHERE TO FIND FERNS

Their greenness is so much the more interesting, because so many have already fallen, and we know that the first severe frost will cut off them too. In the summer greenness is cheap, now it is a thing comparatively rare, and is the emblem of life to us."

Oddly enough, with the first approach of winter the vigorous-looking Brake turns brown and quickly withers, usually without passing through any intermediate gradations of yellow.

In November we notice chiefly the evergreen ferns. The great round fruit-dots of the Polypody show distinctly through the fronds as they stand erect in the sunlight. A sober green, looking as though it were warranted fast, is the winter dress of the Evergreen Wood Fern. The Christmas Fern, bright and glossy, reminds one that the holiday season is not distant. These three plants are especially conspicuous in our late autumn woods. Their brave and cheerful endurance is always a delight. Later in the season the curled pinnæ of the Polypody seem to be making the best of cold weather. The fronds of the Christmas Fern and the Evergreen Wood Fern, still fresh and green, lie prostrate on the ground, their weakened stems apparently unable to support them erect, but undoubtedly in this position they are the better protected from the storm and stress of winter.

Many other ferns are more or less evergreen, but perhaps none are so important to our fall rambles as this sturdy group. Several of the Rock Spleenworts are evergreen, but their ordinarily diminutive

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