Search on : Taxa descriptions


Page number:82 
Remarks (internal):No fresh material was collected during the study and Associated tree data cannot be included. Harrison (1968) and Maas Geesteranus (1975) reported that P. tomentosus occurs under coniferous tree species.
A type specimen of P. tomentosus was not designated, and Linnaeus=, (1753) original description did not clearly indicate to me which species was being described. In a later publication by Linnaeus (1755), however, the description of P. tomentosus is more complete and is evidently referring to P. tomentosus, the species found in the southern-Appalachian Mountains.
Even though no type specimens exist, H. cyathiforme and H. coriaceum-membranaceum have been added to the above synonymy list. The original description by Schaeffer (1774) of H. cyathiforme and an accompanying plate clearly indicate that it is P. tomentosus. Banker (1906) observed the type specimen of H. coriaceum-membranaceum when it was still in existence (location unknown) and found it to be conspecific with P. tomentosus. After reading the original description of H. coriaceum-membranaceum by Schweinitz, (1834), and I am in agreement with Banker (1906) that it belongs to P. tomentosus.
Maas Geesteranus (1958) included additional synonyms under this name. Because no type material was available and the original descriptions did not clearly define the taxa, the names Hydnum zonatum Batsch., Hydnum candicans Fr. and Hydnum cyathiforme var. obscurum (Schaeff.) Sacc. were omitted.
After observing the hyphae from the stipe of P. tomentosus, I was able to find a few clamp connections from the collections TENN 6495 and 9661, but was unable to find previous reference to the occurrence of clamps in this species. Phellodon fibulatus and Phellodon implicatus (southern Florida species) the only other member of the genus known to contain clamp connections.
Phellodon tomentosus appears to be very rare in the southern Appalachian Mountains. Only three specimens have been examined from this geographical area and none were obtained during this study.
Description type:Non-original description 
Description:Phellodon tomentosus (Linnaeus: Fries) Banker.
Sporophore single, bul usually highly concrescent.
Pileus up to 4.0 cm broad, plane to depressed, tomentose to matted or glabrous, shiny, often fibrillose towards the margin, zonate or concentrically corrugated, radially rugulose or rugose, often subscrobiculate at disc, white (5A1) to light orange (5B4) or sunburn
t (6D5); context up to 2.0 mm thick, nol duplex, azonate, light orange (584) ?s, to sunburn near the disc (6D5); taste mild; odor fragrant. Stipe up to 4.5 x 0.5 cm, central, terete to irregularly shaped, attached at the base to a mycelial pad, subtomentose below to matted or glabrous above, sunburn (6D5); context duplex nearest the stipes base, zonate, about sunburn (6D5). Spines are up to 2.0 mm long, short and thin, decurrent, crowded, whitish (6A1) to birch bark (6B2) or salmon (6A4). Chemical reactions:
context tissue olive to nonreactive in KOH or NH4OH. Pileus trama hyphae up to 5.0 (6.0) :m diam, uninflated,
interwoven in subsurface layer, subparallel below, unclamped; gloeoplerous-like up to 5.0 :m diam. Stipe hyphae up to 5.0 :m diam, uninflated, interwoven in subsurface layer, parallel at center, rarely clamped; gloeoplerous-like hyphae up to 5.0 :m diam. Spine trama hyphae up to 4.0 :m diam, uninflated, unclamped. Basidia up to (17.5) 20.0-31.0 x 4.0-5.0 (6.0) :m (X= 25.03"3.12 x 4.72"0.52 :m), clavate, unclamped, 4-spored; sterigmata 3.0-5.0 :m long (X= 3.78"0.49 :m). Basidiospores up to 3.0-4.0 (4.5) x 3.0-3.8 :m (X= 3.51"0.37 x 3.21"0.28 :m), subglobose to globose, hyaline; ornamentation echinulate, spinules nol prominent; hilar appendage oblique.
Terphenylquinones: Thelephoric acid.
Distribution: occurs throughout coniferous areas in northern regions throughout North America and Europe (Harrison, 1968); specimens examined:

Taxon name: