Chocolate Rim-lichen
- Peak month
- August
- Records since 2000
- 525
- Scientific name
- Protoparmelia badia
Florida beard lichen
- Peak month
- October
- Records since 2000
- 525
- Scientific name
- Usnea florida
River Jelly Lichen
- Peak month
- September
- Records since 2000
- 524
- Scientific name
- Lathagrium dichotomum
Psilolechia leprosa
- Peak month
- June
- Records since 2000
- 518
- Group
- Lichens
Bellicidia incompta
- Peak month
- March
- Records since 2000
- 511
- Also known as
- a lichen
Orange Sea Lichen
- Peak month
- August
- Records since 2000
- 509
- Scientific name
- Flavoplaca marina
Ramalina subfarinacea
- Peak month
- August
- Records since 2000
- 509
- Group
- Lichens
Xanthoria aureola
- Peak month
- August
- Records since 2000
- 508
- Group
- Lichens
Variospora dalmatica
- Peak month
- March
- Records since 2000
- 506
- Group
- Lichens
Opegrapha vermicellifera
- Peak month
- February
- Records since 2000
- 505
- Group
- Lichens
Truncated Dimple Lichen
- Peak month
- May
- Records since 2000
- 502
- Scientific name
- Gyalecta truncigena
Micarea alabastrites
- Peak month
- May
- Records since 2000
- 501
- Also known as
- a Lichen
Rinodina sophodes
- Peak month
- July
- Records since 2000
- 501
- Group
- Lichens
Allographa ruiziana
- Peak month
- December
- Records since 2000
- 498
- Group
- Lichens
Field Dog-lichen
- Peak month
- July
- Records since 2000
- 498
- Scientific name
- Peltigera rufescens
Petaled rock tripe lichen
- Peak month
- May
- Records since 2000
- 494
- Scientific name
- Umbilicaria polyphylla
Brown-head Stubble Lichen
- Peak month
- May
- Records since 2000
- 488
- Scientific name
- Chaenotheca brunneola
Boreal Button Lichen
- Peak month
- June
- Records since 2000
- 486
- Scientific name
- Buellia disciformis
Eastern Boreal Pixie-cup
- Peak month
- June
- Records since 2000
- 486
- Scientific name
- Cladonia coccifera
Rosette Pixie-cup Lichen
- Peak month
- November
- Records since 2000
- 480
- Scientific name
- Cladonia pocillum
Thelopsis lichen
- Peak month
- February
- Records since 2000
- 480
- Scientific name
- Thelopsis rubella
Polyozosia persimilis
- Peak month
- July
- Records since 2000
- 478
- Group
- Lichens
Schismatomma graphidioides
- Peak month
- March
- Records since 2000
- 478
- Group
- Lichens
Effervescent Tarpaper Lichen
- Peak month
- May
- Records since 2000
- 474
- Scientific name
- Collema furfuraceum
Rock-loving Map Lichen
- Peak month
- April
- Records since 2000
- 465
- Scientific name
- Rhizocarpon petraeum
Caloplaca obscurella
- Peak month
- February
- Records since 2000
- 458
- Group
- Lichens
Firedot Lichen
- Peak month
- August
- Records since 2000
- 457
- Scientific name
- Athallia holocarpa
Pink bull's-eye lichen
- Peak month
- September
- Records since 2000
- 455
- Scientific name
- Placopsis lambii
Aquacidia viridifarinosa
- Peak month
- October
- Records since 2000
- 453
- Group
- Lichens
Beard lichen
- Peak month
- June
- Records since 2000
- 453
- Scientific name
- Usnea hirta
Cladonia strepsilis
- Peak month
- August
- Records since 2000
- 453
- Group
- Lichens
Ramalina canariensis
- Peak month
- August
- Records since 2000
- 451
- Group
- Lichens
Map lichen
- Peak month
- June
- Records since 2000
- 450
- Scientific name
- Rhizocarpon lavatum
Usnea wasmuthii
- Peak month
- May
- Records since 2000
- 449
- Group
- Lichens
Varicellaria lactea
- Peak month
- May
- Records since 2000
- 449
- Group
- Lichens
Usnea dasypoga
- Peak month
- June
- Records since 2000
- 444
- Group
- Lichens
Chippendale stubble
- Peak month
- May
- Records since 2000
- 438
- Scientific name
- Calicium glaucellum
Cladonia crispata
- Peak month
- October
- Records since 2000
- 435
- Group
- Lichens
Lepraria membranacea
- Peak month
- May
- Records since 2000
- 434
- Group
- Lichens
Lepra aspergilla
- Peak month
- May
- Records since 2000
- 433
- Group
- Lichens
Polycauliona candelaria
- Peak month
- July
- Records since 2000
- 431
- Group
- Lichens
Pyrenodesmia variabilis
- Peak month
- June
- Records since 2000
- 431
- Group
- Lichens
Parasite cup lichen
- Peak month
- May
- Records since 2000
- 430
- Scientific name
- Cladonia parasitica
Rim lichen
- Peak month
- June
- Records since 2000
- 429
- Scientific name
- Lecanora saligna
Pachnolepia pruinata
- Peak month
- June
- Records since 2000
- 428
- Group
- Lichens
Hypotrachyna horrescens
- Peak month
- May
- Records since 2000
- 427
- Group
- Lichens
Lathagrium fuscovirens
- Peak month
- September
- Records since 2000
- 427
- Group
- Lichens
Candy lichen
- Peak month
- May
- Records since 2000
- 420
- Scientific name
- Icmadophila ericetorum