eastern north america's oak-hickory forests. it belongs to the cortinarius armeniacus species group, but differs not only in its mycorrhizal partners (cortinarius armeniacus associates with spruces, while other group members associate with other conifers or with northern hardwoods like birch), but also...
and swamps. it develops a proportionally long stem in order to raise its small caps high enough over the sphagnum to release spores that will be caught by air currents. several species of galerina are very similar—and also occur in sphagnum—so a microscope will be required for certain identification...
over years old, so don't ask me to testify as an expert witness. charles kauffman ( , ) used the european species name inocybe fibrosa for new york and michigan collections of a large, white inocybe that grew in "low, moist, frondose woods" and had a strong odor, funky spores, and prominent pleurocystidia...
russula virescens . close inspection, however, usually reveals a few differences beyond the color of the cap: the patchwork areas of russula crustosa have sharper edges and are more clearly delineated than those of russula virescens; there are usually more pleurocystidia in russula crustosa (in russula...
from the well-known traditional species russula virescens . it is an eastern north american species that differs from the classic concept of russula virescens in its blue-green colors, larger crustose patches, lined cap margin, generally smaller stature, and in its pileipellis (details below). illustrations...
distinct, though its glandular dots tend to become large and elongated, and its cap turns reddish (rather than grayish) when a drop of ammonia is applied. if you are a "lumper" and you're wondering why harry thiers, the author of the species, didn't say to himself, "hey, look at these minor differences in...
campestris ," known from lawns and meadows in eastern north america. it features gills that are pink before turning brown, non-staining flesh, a flimsy ring , and relatively small spores. despite appearances, however, agaricus porphyrocephalus is not particularly closely related to species in the campestris...
you and your field guide have been calling " agaricus campestris ." it's white, squat, and grows in grass—and it features flimsy veils and gills that are pink when young. in short, you won't be able to distinguish it from other members of the campestris group without a microscope; its spores, at about...
richard kerrigan ( ) separates it on the basis of dna sequencing and morphological differences. like agaricus abruptibulbus, agaricus reducibulbus is a white, almond-scented, woodland species. however, agaricus reducibulbus remains white as it develops (agaricus abruptibulbus becomes a little yellowish in...
grayish brown cap that is very finely velvety when young, and often becomes finely patchy in age. the reticulation on its stem is often (but not always) prominent and whitish, contrasting with the brownish stem surface. it is found under oaks and other eastern hardwoods in eastern north america. boletus...