the.com/spore print

A mushroom's fingerprint, dusted onto paper while it dreams of decomposing you.

means A spore print is the pattern of spores left when you place a mushroom cap gills-down on paper or glass, used to identify the species by the color and shape of the deposit.

from A plain compound of two old workhorses. "Print" descends from Latin "premere," to press, by way of Old French "preinte," an impression left behind — the same root behind footprints and fingerprints. "Spore" is younger and bookish, lifted in the 19th century from Greek "spora," a sowing or seed, kin to "sperma" and to the verb "speirein," to scatter. So the term is literally a "scatter-seed impression" — fitting for a thing that records the dust a mushroom flings to the world.

how to
Cap on paper overnight drops millions of spores
color matters
Spore color identifies species, sometimes life-or-death
the count
One mushroom releases billions of spores nightly
art form
Collectors frame prints as natural mandalas
deadly check
White spores can flag lethal Amanita lookalikes
for instance

amanita phalloides spore print — death cap mushroom produces white spore print, used to identify this deadly species

gomphus clavatus spore print — chanterelle relative shows orange-yellow spore print, distinguishes it from false chanterelles

boletus edulis spore print — porcini mushroom produces olive-brown spore print, key identification feature for foragers

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