Rock-loving Map Lichen
Rhizocarpon petraeum (Wulfen) A.Massal.
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
| Month | Records |
|---|---|
| January | 3 |
| February | 10 |
| March | 4 |
| April | 15 |
| May | 26 |
| June | 30 |
| July | 62 |
| August | 79 |
| September | 18 |
| October | 10 |
| November | 6 |
| December | 27 |
Where it is found
States and provinces with the most records. Check the foraging rules for the place you plan to visit.
- Massachusetts 49 records · Foraging rules
- California 28 records · Foraging rules
- Maine 27 records · Foraging rules
- Minnesota 26 records · Foraging rules
- Quebec 23 records · Foraging rules
- Ontario 19 records · Foraging rules
- Virginia 19 records · Foraging rules
- Newfoundland and Labrador 18 records · Foraging rules
- Washington 13 records · Foraging rules
- New Hampshire 11 records · Foraging rules
- Maryland 10 records · Foraging rules
- Connecticut 10 records · Foraging rules
- Michigan 9 records · Foraging rules
- Vermont 9 records · Foraging rules
- North Carolina 8 records · Foraging rules
Show 27 more
- Alabama7 records
- Alaska7 records
- West Virginia7 records
- New Brunswick7 records
- British Columbia6 records
- Indiana6 records
- New Jersey6 records
- Oregon6 records
- Tennessee5 records
- Ohio5 records
- Colorado5 records
- Pennsylvania3 records
- Northwest Territories3 records
- Wisconsin3 records
- Montana2 records
- New York2 records
- Nunavut2 records
- Idaho2 records
- South Carolina2 records
- Kentucky2 records
- Georgia1 records
- Hawaii1 records
- Missouri1 records
- Nevada1 records
- South Dakota1 records
- Utah1 records
- Wyoming1 records
More in the genus Rhizocarpon
-
Yellow Map Lichen
Rhizocarpon geographicum
Edibility unknown — do not eat - No photo yet
Single-spored Map Lichen
Rhizocarpon disporum
Edibility unknown — do not eat - No photo yet
Big Map Lichen
Rhizocarpon grande
Edibility unknown — do not eat - No photo yet
Rhizocarpon reductum
Edibility unknown — do not eat - No photo yet
Rhizocarpon rubescens
Edibility unknown — do not eat - No photo yet
Rhizocarpon infernulum
Edibility unknown — do not eat - No photo yet
Twin Map Lichen
Rhizocarpon geminatum
Edibility unknown — do not eat - No photo yet
Hochstetter's map lichen
Rhizocarpon hochstetteri
Edibility unknown — do not eat
Never eat a wild mushroom based on this site or any app. See safety basics and the disclaimer.