Until very recently, yellow to yellowish-orange chanterelles in North American hardwood forests were all treated as a single, easily identified species, Golden Chanterelle (Cantharellus cibarius). Recent DNA analysis shows that the North American chanterelles are a group of closely related species now known as the Cantharellus cibarius group. The type species of the group, Cantharellus cibarius, is restricted to Europe and does not occur in North America. To date (2022), several new species have been defined, four of them occurring only west of the Rocky Mountains. More species east of the Rockies will almost certainly be described in the coming years.
Elbowpatch Crust (Fomitiporia punctata) is one of many fungi that cause a disease known as canker rot. Cankers are open wounds or lesions on the trunk or a branch. With this species, the canker is takes the form of a brown “elbow patch.” It spreads flat on the surface of the substrate with no stalk or cap (resupinate). The outer (pore) surface is yellowish-brown or grayish-brown. The margins are yellowish-brown at first, eventually becoming black and cracked.
Elbowpatch Crust is a common and widespread wood decaying fungus. It occurs worldwide on every continent except Antarctica. In North America it occurs east of the Great Plains and in the Pacific Northwest. It is found in deciduous and mixed forests and woodlands. It grows on many hardwood trees and shrubs, including willow, ash, maple, plum, buckthorn, mountain ash, Siberian peashrub, and common lilac. It is usually seen on fallen trees and branches, but will also grow on live trees and shrubs. It causes white rot of sapwood and in some species also of heartwood. It can weaken a tree making it a hazard to buildings and people.
Mossy Maze Polypore (Cerrena unicolor) is a widespread and very common bracket fungi. It occurs in Europe and Asia, and throughout North and Central America. In the United States it is common east of the Great Plains, uncommon in the Pacific northwest, and absent elsewhere. In Minnesota it is very common in the eastern half of the state, uncommon to absent in the western half. It is found year round in deciduous and mixed forests, on dead hardwood stumps and logs.
When growing on the underside of a log it looks like a pore surface that has lost its cap. When on the top or side of a log or stump it produces a semi-circular shelf-like or bracket-like cap. The upper surface is whitish to brownish or dark brown, but is often green due to a covering of algae. It has a broad pale margin and is densely hairy, sometimes velvety.
The pore surface is whitish when young, becoming smoky gray at maturity. The pores are slotted, maze-like. The flesh is leathery, tough and inedible.
Boreal Oakmoss (Evernia mesomorpha) is a common and widespread shrubby lichen. It occurs across the globe in the northern latitudes. In the United States it is restricted to the northern tier of states. In Minnesota it is common in the northern third of the state, very common in the Arrowhead region, with only scattered occurrences south to the Metro region. It is found in sunny sites in forests and woodlands. It grows on the branches of both deciduous and coniferous trees. It is relatively tolerant of pollution, which allows it to survive near urban areas.
The vegetative body is shrub-like. It consists of numerous, loosely hanging, evenly forked branches. It looks something like an antler lichen but has broader branches. The branches are soft when wet, and pliable, not brittle, when dry. The upper and lower surfaces are green, wrinkled, and usually have abundant, coarse, granules. These granules are the main form vegetative reproduction. Sexual reproductive structures are rarely produced.
Boreal Oakmoss is not edible. Handling it may cause severe dermatitis.
Bristly Beard Lichen (Usnea hirta) is a very common shrubby lichen, It occurs throughout Europe and the Americas. It is common in northeast and north-central Minnesota, very common in the Arrowhead region, but completely absent from the remaining two-thirds of the state. It is found in coniferous and mixed forests growing on the bark and twigs of sick or dying coniferous trees, rarely also on birch trees, very rarely also on rock.
Bristly Beard Lichen is pale, grayish-green, yellowish-green, or blackish-gray, and is variable in shape. It may appear as a few long drooping strands; an erect, densely branched, shrub-like tuft; or a combination of the two. The main branches are unequal in length and have numerous short side branches. They are usually short, erect, and stiff when dry, limp when wet. Drooping branches, if present, are long and contorted. All branches are angular, not round, in cross section, are swollen at the base, and are often broadly forked. The base of each branch is the same color as the rest of the branch, not blackened. The surface is dull to shiny and never cracked.
Sinewed Bushy Lichen (Ramalina americana) is widespread and very common. It occurs in the eastern deciduous forests of the United States and southern Canada, and in the mountainous forests of Mexico. In Minnesota it is very common in the north, scattered to absent in the south. It is found on bark of old hardwood trees, usually in full sun, mostly on twigs and branches in the upper canopy but also on the trunk. It is more sensitive to air pollution than most lichens, and is absent from areas with even mild air pollution.
Sinewed Bushy Lichen appears as a short, shrubby, yellowish-green tuft. The branches are narrow, straight-sided, flattened, solid, and strongly ridged and channeled. Yellow, disk-like, spore-producing structures are frequent and large. They appear at or close to the tips of the branches. They are usually flat but often contorted.
Purple Jellydisc (Ascocoryne sarcoides or Ascocoryne cylichnium) is a widespread and common fungus. It occurs from Maine to Minnesota, south to Illinois and Georgia, on the West Coast, and in adjacent Canadian provinces. It is uncommon in Minnesota, where it is at the western edge of its range. It is found in the fall grouped or clustered in deciduous forests and woodlands on well-rotted hardwood stumps and logs.
When young, Purple Jellydisc is a lumpy, irregular, gelatinous, purple or wine-red mass up to 8″ across. It appears brain-like and looks like a jelly fungus. As it ages the lobes flatten out into 3 ⁄16″ to ⅞″ (5 to 22 mm) wide disc-shaped or cup-shaped fruiting bodies. When mature, it looks like a disc fungus. There is no stem but there is sometimes a short, poorly-defined, stem-like base.
Some authors claim that Ascocoryne cylichnium is more often disc-like than Ascocoryne sarcoides. Most authors agree that the two species can only be differentiated with certainty by examining the spores microscopically. Both species have been reported in Minnesota.
Eyelash Cup (Scutellinia scutellata) is a small, common, very widespread, cup fungus. It is small for a fungus but large for a Scutellinia. It has a worldwide distribution, occurring on every continent except Greenland. It is common in Minnesota. It is easy to recognize but easily overlooked due to its small size. It is found from spring through fall, in small groups or larger clusters, usually soon after a rain. It grows on well rotted wood.
When it first appears it is nearly spherical and bright red to scarlet or orange. As it grows it spreads out into a shallow cup. Mature specimens are flat, disk-like, and up to ⅝″ in diameter. Around the margin there is a fringe of dark, eyelash-like hairs. The underside is covered with shorter dark hairs. It is edible but too small and insubstantial to bother with collecting.
Dyer’s Polypore (Phaeolus schweinitzii) is one of the most common large polypores in coniferous forests throughout North America. It is used to prepare fabric dyes of various colors, but is also a significant pest to the timber industry in western United States.
The fruiting body is a large, bracket-shaped polypore (conk). It usually appears on the ground as a rosette or an overlapping tier of brackets at or near the base of a large coniferous tree. In Minnesota it is most common on white pine. It attacks the living roots and the heartwood of older trees, causing the disease called red-brown butt rot. The lower 10 to 20 feet of the trunk, the most valuable part for the timber industry, is weakened or hollowed, making the tree susceptible to falling over. On young trees the fungus causes root rot which is also fatal.
The cap is 2″ to 12″ wide and circular when growing on the ground, semicircular or fan-shaped when on a trunk. When young it is soft, spongy, light brownish-yellow to orange, and densely covered with velvety hairs. As it ages it becomes hard, less hairy, and turns dark brown from the center outwards. Older specimens are brittle and dark brown or black, looking something like a cow pie. It is probably poisonous.
Hexagonal-pored Polypore (Neofavolus alveolaris) is one of the first mushrooms to appear in woodlands in the spring. It occurs in Europe, Japan, and North America east of the Rocky Mountains. In the United States it is especially common east of the Great Plains. It first appears in May, the same time as morels, and persists through November. It grows on fallen branches and small logs of hardwoods.
The fruiting body is a semicircular to kidney-shaped, shelf-like bracket. When it first appears in late spring it is orange or orangish. It is at this stage that it is most easily recognized. The upper surface is covered with minute scales or delicate fibers. As the season progresses it fades to yellowish or nearly white. It usually has a short, stubby laterally positioned stalk. The pore surface is white to pale yellowish and is covered with conspicuous, large, diamond-shaped or six-sided pores. The pores are not all hexagonal, as the bracket’s common name suggests.
Hexagonal-pored Polypore is not poisonous but the bracket is too small and the flesh is too tough to be edible.