Coltricia montagnei (Fr.) Murrill 1920

Foodplant / mycorrhiza
fruitbody of Coltricia montagnei is mycorrhizal with live root of Broadleaved trees

In Great Britain and/or Ireland:
Foodplant / mycorrhiza
fruitbody of Coltricia montagnei is mycorrhizal with live root of Tilia

Cycloporus greenei (Berk.) Murrill, Bull. Torrey Club 31 : 424. 1904
Cyclomyces Greenei Berk. Lend. Jour. Bot. 4 : 306. 1845.
Pileus circular, obconic to explanate, rarely cespitose, 5-10 cm, broad, 5-10 mm. thick at the center, much thinner at the margin ; surface undulate, zonate, tomentose to glabrous and shining, ferruginous to fulvous, fuliginous-black in some old plants ; margin at first rounded, sterile, undulate, isabelline, becoming very thin, darker, and somewhat eroded with age : context spongy, fragile, zonate, ferruginous xs fulvous, scarcely 1 mm. thick in mature plants ; tubes oblong-polygonal when very young, soon becoming concentric furrows, 5-8 mm. deep, 1-2 mm. wide, undulate, pale-fulvous to fuliginous, edges isabelline to umbrinous, very thin, uneven, splitting with age: spores ovoid, smooth, pale-ferruginous, 5-6 X 10-12 /i: stipe central, enlarged above, irregular, tomentose, fulvous to fuliginous, spongy and brown within, 3-8 cm. long, 1.5-2 cm. thick.
Type localxty : Massachusetts.
Habitat: On the ground in woods.
Distribution : New I^ngland to North Carolina and west to Iowa.

Coltricia obesa (KHis & Ev.) Murrill, Bull. Torrey
Club 31 : 346. 1904.
PolysHctus obesus Bllis & Bv. Bull. Torrey Club 24 : 125. 1897.
Hymenophore simple or cespitose, sometimes connate ; pileus circular, convex to depressed, 4-6 cm. broad, 5-10 mm. thick ; surface fulvous, tomentose, azonate, smooth or pelliculose ; margin yellowish-cinnamon, obtuse, becoming acute, entire or undulate : context homogeneous, soft, friable, fulvous, 4-8 mm. thick; tubes short, about 1 mm. in length, pale-avellaneous within, mouths irregular, circular to radially-elongate and slightly sinuous, 0.5-1 mm. broad, edges becoming acute and sligktly toothed, white to fulvous : spores ellipsoid, smooth, ferruginous, 7-8 X 4-5 ii ; cystidia none : stipe central, spongy, tomentose, fulvous, 4-6 cm. long, 5-15 mm. thick above, enlarged below, 1-3 cm. in thickness.
Type locality : Newfield, New Jersey. Habitat : Attached to buried pine branches. Distribution : Canada to North Carolina and west to Ohio.

Coltricia memmingeri Murrill, Bull. Torrey Club 31 : 347. 1904
A large dark-brown plant, with rough shaggy surface and short thick stipe, much dilated at the base. Pileus very irregular, circular to dimidiate, convex to plane or depressed, 10 XI cm.; surface fulvous to dark seal-brown, ornamented with long imbricated scales of the same color ; margin alutaceous, pubescent, sterile, subacute, undulate : context corky, fragile, azonate, 0.5-1 cm. thick, thinner towards the margin, concolorous ; tubes adnate, 1-4 mm. long, 1-3 to a mm., umbrinous, apparently blackening with age, mouths circular and whitish when young, becoming angular, irregular and concolorous or 'darker with age, edges entire to dentate : spores ovoid, smooth, light-ferruginous, usually 2-guttulate, 4 X 7//; hyphae golden-yellow ; cystidia none : stipe central or excentric, at times confluent, very short, thick, angular or flattened, dilated at the base to twice its thickness above, resembling the pileus in color, surface and substance, 1-3 X 3-5 cm.
Type locality : Flat Rock, North Carolina.
Habitat : Wet clay batiks.
Distribution : Known only from the type locality.