Quote:
Originally Posted by Phenom  What I could do with is a link to or a list of Id characteristics of p.quercinus |
OK here goes:
(from Leif Ryvarden's
Polyporaceae of Northern Europe Vol. 2, pp 376-77)
" . . . 3.
Piptoporus quercinus (Fr.) Pilat. Fig. 155 c
Atl. Champ. Europ. 3:124, 1937. -Polyporus
quercinus Fr. Epicr. p. 441, 1838.
Special literature: Kotl. & Pouzar in Ceska Mycol.
20:81-89, 1966.
Fruitbody annual, pileate, applanate to convex, dimidiate to elongated, often with a contracted base, especially when growing from necrotic depressions, up to 15 cm wide and long, 1-5 cm thick at the base, fleshy and pulpy when fresh, more corky, coriaceous and partly shrunken when dry,
Pileus first adpressed velutinate, soon finely granular and then smooth,
azonate, first pale brownish, later dark brown to almost black.
Pore surface white, brownish when touched or when dry, pores round,
2-3 per mm, tubes rather short , up to 4 mm deep at the base.
Context white to cream, often pale brown towards the thin cuticle on
the pileus, up to 4 cm thick at the base, fleshy when fresh, corky and
coriaceous when dry.
Hyphal system dimitic, generative hyphae hyaline in the trama, which is monomitic, light brown in the pileus tomentum, thinwalled 2.5-6 microns wide with large and conspicuous clamps, skeletal hyphae only in the context , rather thinwalled in young fruitbodies more thickwalled in older fruitbodies, up to 10 microns wide.
Spores hyaline to very pale yellowish, smooth, thinwalled, non-amyloid, cylindrical to allantoid, straight or more commonly characteristically bent close to the apiculus, 6-8 x 2.5-3.5 microns.
Habitat . On living
Quercus, mostly on the trunks from necrotic depressions.
Distribution. A very rare species. In Denmark from the eastern part , in
Norway from Tonsberg, Vestfold but not recorded the last 80 years, in Sweden rare, but scattered through the south-eastern part from Vastgotland: Mt. Hunneberg to Uppsala. Not known from Finland.
From Great Britain through central Europe to USSR, but everywhere
very rare.
Remarks. This is a rare species which should be recognized by its host, the somewhat sappy fruitbody with a smooth and papery thin cuticle when mature. In the microscope the "bent " spores are very characteristic.
Kotl. & Pouzar (op.cit.) described the genus
Buglossoporus to accomxemodate this species. The main difference between this genus and
Piptoxeporus is that the tubes in
Buglossoporus are monomitic and dimitic in
Piptoporus besides that the vegetative hyphae of the latter are more branched than those of the former. Personally I find this difference too small to accept a generic splitting and prefer to retain the species in
Piptoporus. . ."
phew
- a key feature seems to be the "tubes rather short , up to 4 mm deep at the base" - you mention that yours are 10mm deep which would seem to exclude
P. quercinus
cheers
Chris
Linear Mode
