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Milk-Cap Mushroom



Lactarius is a genus of mushroom-producing fungi. The genus, collectively known commonly as milk-caps, are characterized by the fact that they exude a milky fluid ('latex') if cut or damaged. Like the genus Russula, with which they are grouped in the family Russulaceae, their flesh has a distinctive brittle consistency. Often the gills are decurrent (starting to run down the stem) and the cap is depressed or even funnel-shaped when older. The stem and cap sometimes show 'strobicules' (or 'strobiculi'), which are flat-based shallow oval pits. To identify to which of the roughly 400 Lactarius species a given specimen belongs, note whether the cap is bald/greasy or velvety or hairy/shaggy at the rim, particularly in young individuals. Also the initial colour of the milk (white, cream, orange, violet, ...) and the final colour on drying are determining characteristics. The genus was described by Christian Hendrik Persoon in 1797. Lactarius is derived from the Latin lac 'milk'. Wikipedia


Tree litter along hiking trail in Huddart County Park, Woodside, CA.

Species ID Suggestions

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misako 10 years ago

Thank you for the ID mmarchiano!

misako 10 years ago

Thank you birdlady6000!

birdlady6000 10 years ago

Love your excellent photos of this False Chanterelle!

Spotted by

San Mateo, California, USA

Spotted on Jan 6, 2013
Submitted on Jan 8, 2013

Related Spottings

Lactarius Lactarius chrysorrheus False Saffron Milkcap Indigo Milkcap (Indigo Lactarius)

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