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How to Identify American Slippery Jack

Suillus americanus
EDIBLE* Season // Aug-Oct Family // Suillaceae

Description

Suillus americanus is characterized by its yellow to brown cap that is sticky when wet, with a smooth surface. The stem is stout and often has a bulbous base, featuring a reticulated pattern.

Key Identification Features

Field marks recorded for this species. Work through all of them, not just one:

  • Cap: Yellow to brown, sticky when wet
  • Gills: Free, yellow to brown
  • Stem: Stout, bulbous base, reticulated pattern
  • Spore print: Olive brown
  • Taste: Mild

Specimen Profile

FamilySuillaceae
GenusSuillus
EdibilityEdible*
Toxicitynone
SeasonAug-Oct
HabitatTypically found in association with pine trees, often in sandy soils.
RegionEastern North America, particularly in the southeastern United States.

Habitat & Distribution

Habitat: Typically found in association with pine trees, often in sandy soils.

Region: Eastern North America, particularly in the southeastern United States.

Seasonality

Fruits from late summer to early fall.

Typical months: Aug-Oct

Common Lookalikes

Always verify identification to avoid these similar species. The differentiator is the point — learn the one or two tells that separate them:

Suillus luteus (edible)

HOW TO TELL APART

distinguishable by its darker cap and more pronounced reticulation on the stem.

Suillus granulatus (edible)

HOW TO TELL APART

has a more granular cap surface and grows in different habitats.

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Track your American Slippery Jack finds

Pin the patch before you leave it. Coordinates, photos, and field notes stay on your device — and the offline lookalike guide travels with you into the deep woods.

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Disclaimer: This guide is for educational purposes only. Never consume a wild mushroom unless you are 100% certain of its identification.