Fungi › rosette lichens, frost lichens, and allies
Blue-gray Rosette Lichen
Physcia caesia
28 photos
Study shows up to four per card, from different observers, so you learn the species rather than one picture. Heart the good ones and swap any you do not like.
Photos you add are credited to you, and you keep the copyright.
Easily confused with
Stonewall Rim LichenProtoparmeliopsis muralis
Netted shield lichenParmelia sulcata
Hooded Rosette LichenPhyscia adscendens
Powder-tipped Rosette LichenPhyscia dubia
Salted Shield LichenParmelia saxatilis
Physcia subalbinea
Blue Blister LichenThalloidima sedifolium
Mealy Shadow LichenPhaeophyscia orbicularis
Study checks a spoken answer against these, and tells you which one you named.
Where it is recorded
| United States | 34,872 |
|---|---|
| Alaska | 33,477 |
| Canada | 1,070 |
| Germany | 634 |
| Ontario | 307 |
| British Columbia | 292 |
| Lithuania | 282 |
| Berlin | 274 |
| United Kingdom | 226 |
| Netherlands | 204 |
Counts show where people looked, not only where it lives.
Traits
Group and habits
- Human edibleListed as edible by a harvested source. This is a research trait, not foraging advice.FungiTastic metadata
- Lichen growth formListed by a harvested source as belonging to the lichen plant group.USDA PLANTS Characteristics
Edibility, toxicity and medicinal traits are records from datasets, not advice. Never eat, handle or use a wild species on the strength of an app.
Classification
| Kingdom | Fungi Including Lichens · Fungi |
|---|---|
| Phylum | Ascomycete Fungi · Ascomycota |
| Class | Common Lichens · Lecanoromycetes |
| Order | button lichens, rosette lichens, and allies · Caliciales |
| Family | rosette lichens, frost lichens, and allies · Physciaceae |
| Genus | rosette lichens · Physcia |
Study it in a deck
Or build your own from the species near you.
Sources
- Names, taxonomy and observation counts: www.inaturalist.org
- Photos and recordings: the creator and source are on each one.
- Traits: FungiTastic metadata (BSD-3-Clause repository; dataset terms require verification)
- Traits: USDA PLANTS Characteristics (U.S. Government work / public domain)
- How much to rely on each source
Remember the name next time.
Practise Blue-gray Rosette Lichen with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.