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Bird's Nest Fungus This fungus looks like tiny birds' nests! The fruiting body "nests" contain spore-filled periodoles ("eggs"). The nests, called peridia, serve as splash cups, and when raindrops strike the nest, the periodoles are projected into the air where they latch onto branches, leaves, etc. The nests were only 1-3mm wide. Bird's Nest Fungi,Bird's Nest Fungus,Crucibulum,Crucibulum laeve,Geotagged,United States,Winter,fungi,fungus Click/tap to enlarge Promoted

Bird's Nest Fungus

This fungus looks like tiny birds' nests! The fruiting body "nests" contain spore-filled periodoles ("eggs"). The nests, called peridia, serve as splash cups, and when raindrops strike the nest, the periodoles are projected into the air where they latch onto branches, leaves, etc. The nests were only 1-3mm wide.

    comments (3)

  1. This is a crazy fungi! It actually had a lid atop the cup? Posted 7 years ago
    1. Totally crazy fungus. You can actually pull the eggs out with forceps and they have little strings attached to the bottoms of them that hold them in place. It did have a lid - a weird, fuzzy one. I'll post a picture. Posted 7 years ago

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Crucibulum laeve is probably the most common and frequently encountered bird's nest fungus in temperate North America. Three features serve to identify it successfully: its yellowish colors; the "lid" over the nest (in young specimens), covering the eggs; and the tiny cords that attach the eggs to the nest.

Similar species: Agaricales
Species identified by Christine Young
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By Christine Young

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Uploaded Feb 21, 2018. Captured Feb 20, 2018 15:05 in 281 Main St S, Woodbury, CT 06798, USA.
  • Canon EOS 80D
  • f/2.8
  • 1/166s
  • ISO250
  • 100mm