Read full entry

Phaeolus schweinitzii

Phaeolus schweinitzii
View the Mycomorphbox template that generates the following list
Mycological characteristics
pores on hymenium
cap is offset
hymenium is decurrent
stipe is bare

spore print is white

to yellow
ecology is parasitic

edibility: unknown

or poisonous

Phaeolus schweinitzii, commonly known as velvet-top fungus, dyer's polypore, or dyer's mazegill, is a fungal plant pathogen that causes butt rot on conifers such as Douglas-fir, spruce, fir, hemlock, pine, and larch.[1] P. schweinitzii is a polypore, although unlike bracket fungi the fruiting body may appear terrestrial when growing from the roots or base of the host tree. The fruiting bodies, appearing in late summer or fall, commonly incorporate blades of grass, twigs, or fallen pine needles as they grow. As these fruiting bodies age, the pore surface turns from yellow to greenish yellow, the top becomes darker, and the flesh becomes harder and more wood-like.[2]

The effect, impact and significance of infection by this fungus is rooted in the fact that it causes brown rot, which degrades the cellulite. Thus there is a loss of tensile strength which often leads to brittle fracture near the stem base, even at a fairly early stage of decay. Decay initiated above ground can lead to branch snap or breakout.[3]

P. schweinitzii is native to North America and Eurasia,[1] and has been identified as an exotic species in New Zealand, Australia, and South Africa.[4]

As its common name suggests, the dyer's polypore is an excellent natural source of green, yellow, gold, or brown dye, depending on the material dyed and the mordant used.[2][5]

P. schweinitzii is named after Lewis David de Schweinitz, a Pennsylvania-born Moravian minister and important early American mycologist.


Creative Commons Attribution Share Alike 3.0 (CC BY-SA 3.0)

Source: Wikipedia

Belongs to 1 community


EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!