sensitive fern

American  

noun

1. a common, widely distributed fern, Onoclea sensibilis, having large, triangular leaves and beadlike spikes that contain the spores.

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Etymology

Origin of sensitive fern

An Americanism dating back to 1805–15; so called from the sensitivity of its foliage to frost

Example Sentences

Several species grow in our woods, including the ubiquitous sensitive fern, the unusual Goldie’s fern and the finely textured lady fern with its attractive reddish midstem.

From New York Times • May 24, 2012

As Waters remarks, "Most ferns hold the sori in the open hand, but the sensitive fern grasps them tightly in the clenched fist."

From The Fern Lover's Companion A Guide for the Northeastern States and Canada by Tilton, George Henry

The sensitive fern is so called from its being very sensitive to frost.

From The Fern Lover's Companion A Guide for the Northeastern States and Canada by Tilton, George Henry

The sensitive fern has a running rootstock, scattered fronds, and netted veins; while the ostrich fern has an upright rootstock, fronds in crowns, and free veins.

From The Fern Lover's Companion A Guide for the Northeastern States and Canada by Tilton, George Henry

Horehound, horsemint, and the sensitive fern grew close to the edge, under the willows and alders, and wool-grass on the islands, as along the Assabet River in Concord.

From The Atlantic Monthly, Volume 02, No. 08, June 1858 by Various