The genus Polyporus and the genus Trametes have the pores closely packed and united to together. In Trametes the uniting substance is the same as the substance of the cap, but in Polyporus the uniting substance is different from the substance of the cap. The genus Polyporus in its widest sense is a large, one, numbering some five hundred species, and containing every texture from fleshy or pulpy to woody.
The fruiting portion is often seen in the form of brackets shelving out from standing or fallen trees. The mycelium penetrates the wood, softening it, and causing it to crumble, so that in the course of time the tree dies. The external evidence that the tree has been attacked is the appearance of the fruiting portion, which often attains a very great size.
Elfvingia (polyporus) megaloma
Polyporus megaloma is attractive to frequenters of the woods, as its spore surface when fresh is soft and white, and furnishes an attractive surface for stencil drawings.
Elfvingia (polyporus) fomentaria
The brackets of Elfvingia fomentaria resemble horses' hoofs. They are employed in the manufacture of amadou, or Mer-a'-li-iis Lac'-ry-mans P6-lyp'-o-rus Tra-me'-tes Meg-a-16'-mii Fo-men-ta'-rf-iis
(Elfingia fomentaria, L.; Fomes fomentarias, Gill.; Polyporus fomentarius, Fr.)
Upper surface grey to brown ; tube-surface concave. See p. 101
German tinder, which, in the form of sticks or fusees, commonly known as punk, is used for lighting cigars and pipes in the wind, or for touching off fireworks.
The fusees are made by beating the fungus substance until it is flexible, and then dipping it into saltpetre,
Polyporus conchatus is a beautiful species found on the under side of fallen trees, growing in such a manner that from the spore-bearing surface the shells look like rosettes of shimmering golden-brown velvet.
Polyporus velutinus is common in the form of stiff ruffles with white or creamy spore surface, and grey or tan-coloured plush-like upper surface.
Polyporus pergamenus has a somewhat bristle-like, tan-coloured spore surface, and a velvety drab upper surface, often tinged with green from a green alga which grows upon it.
Polyporus perennis resembles a slender-stemmed goblet.
Polyporus sulphureus is an edible fleshy form. It grows in clusters, the stemless caps often five or six inches broad and overlapping. The colour of the young cap is yellowish red or pale orange, with the margin wavy, and of a beautiful yellow. It is soft and juicy, and often - when cut - exudes a yellow juice.
The plants may be found on the dead wood of trees during showery weather from May to October. The mature plants become dry and crumbling, and as they dry they lose Con-cha-tus Vel-u'-tl-nus Pcr-ga-me'-niis Per-en'-nis Sul-phu'-re-us
Fungi with Pores - Polyporaceae their attractive colours. They exhibit phosphorescence in early stages of decay. The tubes are minute and short and of a bright sulphur colour. Only the young plants should be used for food.
Polyporus squamosus is found often on decayed ash trees and sometimes on others. The cap has a thick lateral dark stem and is pale yellow tinged with brown, and covered with dark scales. It is reported to have been found seven feet in circumference, with a weight of forty-two pounds, and that it attained this growth in the short time of four weeks.
Polyporus Iucidus has a lateral stem which, with all but the margin of the cap, is highly polished, as if varnished, and is in colour a rich mahogany brown.
PolypOrUS arculariuS (See Plate Facing Page 142)
Cap - Dark brown, minutely scaly, depressed in the centre; margin stiff, edge hairy, no flesh.
Tubes - Dingy cream colour. Openings oblong, almost diamond-shape, resembling the meshes of a net, drawn from stem to the margin of the cap, the meshes smaller on the margin, and simply marked out at the top of the stem.
Stem - Dark brown, minutely scaly, mottled, with a ground work of cream colour. Older stems are roughened at the base with whitish hairs. Hollow.
Spores - Creamy white.
Habitat - The specimen pictured was found growing on decayed branches of an oak tree in North Carolina.
Polyporus versicolor has a leathery cap, thin and rigid, plane, depressed at the attached portion, velvety, shining with variegated two-coloured zones. The pores are minute, round, with acute and ragged edges. White, then yellowish. It is common on decaying tree trunks and upon telegraph poles.
Squa-mo'-sus Lu'-ci-dus Ar-cu-la'-ri-iis Ver-sic'-o-lor
Known also as Polystictus versicolor
Polyporus versicolor, Fr.
Polyporus circinatus, Fr See page 113.
Lenzites betulina, Fr. See page 113.