Habitat and Substrate: Exposed to shaded areas, on trees, rocks, old wood, and soil among mosses.

Rhode Island Status: Very common.

Pollution Tolerance: Tolerant.

Collection Site(s): Diamond Hill State Park, Cumberland (#4836); Schoolhouse Pond/Deep Pond, Charlestown (#4880); Grass Pond, Richmond (#4921); Carolina Wildlife Management Area, Richmond (#4938); Factory Pond, South Kingstown (#4985); Queen River, Exeter (#5021); Ponagansett Public Fishing Area, Foster (#5062); Casimir Pulaski Memorial Park, Glocester (#5079); Lime Rock, Lincoln (#5111); Headwaters of Wood River, West Greenwich (#5140); Big River Wildlife Management Area, West Greenwich (#5159); Snake Den State Park, Johnston (#5175); Lake Wallum, Burrillville (#5210); Buck Hill Wildlife Management Area, Burrillville (#5235); First Baptist Church at Cross Mills, Charlestown (#5275); Pettaquamscutt River Area, North Kingstown (#5288); Pawtucket River Pine Barrens, Richmond (#5303); Blue Pond, Hopkinton (#5332); Nicholas Farm, Coventry (#5355); Norman Bird Sanctuary, Middletown (#5380); Fogland Marsh, Tiverton (#5393); J.L. Curran Park, Cranston (#5410); Frenchtown Park, East Greenwich (#5429); Lincoln Woods, Lincoln (#5447); Audubon Fort Nature Preserve, North Smithfield (#5463); Black Swamp Area, North Kingstown (#5505); Elm Grove Cemetery at Allenton, North Kingstown (#5515); Powder Mill Ledges Wildlife Refuge, Smithfield (#5537); Kimball Wildlife Sanctuary, Charlestown (#5572); George Parker Woodlands, Coventry (#5588); Oakland Farms, Portsmouth (#5598); Conanicut Island Cemetery, Jamestown (#5612).

Notes: Previously reported in Rhode Island by Hebert (Flenniken 1968a), Flenniken (1968b), Hinds (1998), and Greene (2000). Earlier records may have included Parmelia sulcata as a variety of Parmelia saxatilis.