Notes: Locality: 35°40’47.20"N, 83°38’56.07"W, el. 510 m

Substrate and habitat: Growing on a tree trunk about 10 cm DBH 2 m above the ground in wet riparian woodland.

Identification: Pale green, rosette-forming Physcia with a few circular laminal soralia.

References:
Sharnoff’s Physcia americana gallery
CNALH images and locality map, and a larger, interactive locality map.

Common name: powdery rosette lichen

[admin – Sat Aug 14 02:02:53 +0000 2010]: Changed location name from ‘Metcalf Buttoms, Great Smoky Mountains NP, Tennessee, USA’ to ‘Metcalf Buttoms, Great Smoky Mountains National Park, Tennessee, USA’