Common Bird's Nest Fungus

Crucibulum laeve

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.
Crucibulum laeve  Crucibulum,Crucibulum laeve,Fall,Geotagged,United States,bird's nest fungi

Appearance

Nest: 2-9 mm high; 4-10 mm across; at first cushion-shaped to round, and closed by a mustard yellow to dull yellow "lid"; later becoming cup-shaped or goblet-shaped, the lid disappearing; outer surface yellowish at first, remaining yellow or darkening to nearly brown, velvety or fairly bald; inner surface bald and shiny, whitish to grayish.

Eggs: To 2 mm wide; shaped like flattened circles or ellipses; tough; attached to the nest by tiny cords; pale tan to buff.
Bird's Nest Fungus - Crucibulum laeve 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 1 -5 mm wide. 

Habitat: Spotted growing on wood chips throughout a rural garden.
https://www.jungledragon.com/image/66800/birds_nest_fungi_-_crucibulum_laeve.html
https://www.jungledragon.com/image/66803/birds_nest_fungi_-_crucibulum_laeve.html
https://www.jungledragon.com/image/66802/birds_nest_fungus_-_crucibulum_laeve.html
https://www.jungledragon.com/image/66801/birds_nest_fungus_-_crucibulum_laeve.html
https://www.jungledragon.com/image/66798/birds_nest_fungus_-_crucibulum_laeve.html
https://www.jungledragon.com/image/66799/birds_nest_fungus_-_crucibulum_laeve.html Crucibulum laeve,Geotagged,Summer,United States,bird's nest fungi,fungi,fungus

Distribution

It has been collected in most European countries and the Canary Islands; in North America it has been found from Alaska to Mexico, while South American locations include Chile and Tierra del Fuego. It has also been found in Australia, Iceland, Japan and New Zealand.
Bird's Nest Fungus - Crucibulum laeve 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 1 -5 mm wide. 

Habitat: Spotted growing on wood chips throughout a rural garden.
https://www.jungledragon.com/image/66800/birds_nest_fungi_-_crucibulum_laeve.html
https://www.jungledragon.com/image/66804/birds_nest_fungus_-_crucibulum_laeve.html
https://www.jungledragon.com/image/66803/birds_nest_fungi_-_crucibulum_laeve.html
https://www.jungledragon.com/image/66801/birds_nest_fungus_-_crucibulum_laeve.html
https://www.jungledragon.com/image/66798/birds_nest_fungus_-_crucibulum_laeve.html
https://www.jungledragon.com/image/66799/birds_nest_fungus_-_crucibulum_laeve.html Crucibulum laeve,Geotagged,Summer,United States,fungus

Habitat

Growing alone, scattered, or densely gregariously on woodland debris (sticks, leaves, nutshells, needles, etc.), woodchips, old furniture, dung, and so on (but not typically on the ground alone or on larger logs); spring through fall (or in winter in warmer climates).

References:

Some text fragments are auto parsed from Wikipedia.

http://www.mushroomexpert.com/crucibulum_laeve.html
Taxonomy
KingdomFungi
DivisionBasidiomycota
ClassAgaricomycetes
OrderAgaricales
FamilyNidulariaceae
GenusCrucibulum
SpeciesCrucibulum laeve