<p>"Beads" of the Bead Fern Onoclea sensibilis
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The sterile and fertile fronds of this fern are quite different. The bright, yellow-green sterile fronds are deeply pinnatifid and are typically borne at intervals along a creeping rhizome. They grow to about 90 cm long, with a long, smooth stipe. The fertile fronds are much smaller, non-green, and have very narrow pinnae. The sori are clustered like beads or grapes on the upright fertile fronds, hence the common name Bead fern. The fiddleheads are a pale red color.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/46639194@N05">Charles de Mille-Isles</a> from Mille-Isles, Canada
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/demartigny/5705843412/">Fougère Onoclea sensibilis</a>