Twin Map Lichen

Rhizocarpon geminatum Körb.

Also called: map lichen

Edibility

Edibility unknown — do not eat

Never eat a wild mushroom based on this site or any app.

Lookalikes

No lookalikes are recorded for this species yet. That does not mean there are none. Many mushrooms look alike, so never rely on appearance alone.

Season

When this species has been recorded, by month, from open-licensed US and Canada observations. It shows when people report it, not a guarantee it is fruiting.

The highlighted bar is the current month.

View season data as a table

Recorded observations of Twin Map Lichen by month
Month	Records
January	1
February	0
March	1
April	1
May	8
June	36
July	144
August	59
September	16
October	10
November	1
December	3

Where it is found

States and provinces with the most records. Check the foraging rules for the place you plan to visit.

Nunavut 67 records · Foraging rules
Northwest Territories 41 records · Foraging rules
British Columbia 31 records · Foraging rules
California 24 records · Foraging rules
Yukon 16 records · Foraging rules
Quebec 14 records · Foraging rules
Minnesota 12 records · Foraging rules
Colorado 10 records · Foraging rules
Ontario 9 records · Foraging rules
Wyoming 9 records · Foraging rules
Manitoba 8 records · Foraging rules
Alaska 8 records · Foraging rules
Alberta 6 records · Foraging rules
Newfoundland and Labrador 6 records · Foraging rules
Washington 5 records · Foraging rules

Show 11 more

Maine4 records
Utah3 records
Nevada3 records
New Mexico3 records
Michigan2 records
Connecticut2 records
Idaho2 records
Arizona2 records
Nova Scotia2 records
Oregon1 records
Montana1 records

All state and province foraging laws

More in the genus Rhizocarpon

Never eat a wild mushroom based on this site or any app. See safety basics and the disclaimer.