Loading profile. Please wait . . .

---

Federal Protection: No US federal protection

State Protection: No Georgia state protection

Global Rank: GNR

State Rank: SNR

Element Locations Tracked in Biotics: No

SWAP 2015 Species of Greatest Conservation Need (SGCN): No

SWAP 2025 Species of Greatest Conservation Need (SGCN): No

2025 SGCN Priority Tier: None

Element Occurrences (EOs) in Georgia: 0

Habitat Summary for element in Georgia: Forests and woodlands

---

Description

Pale green thallus with short brown isidia, numerous short black cilia at lobe edges with distinct bulbs at bases (sometimes difficult to see in the field); lobes branching to form rounded loops which at a glance resemble disks; undersides brown throughout, not blackened away from lobe tips; CHEMISTRY: medulla K-, C+ pink (gyrophoric acid); FIELD ID: delicate, lacy thalli with isidia & brown undersides, with confirmation of cilia morphology (requires good hand lens & good eyes)

Similar Species

Bulbothrix laevigatula has black underside & C+ red medulla; B. isidiza has K+ red medulla & usually more robust lobes

Related Rare Species

Bulbothrix laevigatula

Habitat

Woodlands, forests; substrates: 92% hardwood bark, including 34% Quercus & 13% Acer; 6% Pinus

Life History

Corticolous foliose lichenized fungus, photobiont a green alga (Trebouxia?)

Survey Recommendations

None

Range

Statewide

Threats

Unknown

Georgia Conservation Status

Common

Conservation Management Recommendations

None

References

Brodo, I. M. 2001. Lichens of North America. Yale University Press, New Haven, Conn.

Brodo, I. M. 2016. Keys to lichens of North America: revised and expanded. Yale University Press, New Haven, Conn.

Esslinger, T. L. 2021. A cumulative checklist for the lichen-forming, lichenicolous and allied fungi of the continental United States and Canada. Version 24. Opuscula Philolichenum 20: 100-394.

Authors of Account

Malcolm Hodges

Date Compiled or Updated

6 March 2022