Name: Fomitopsis scortea (Corner) T. Hatt.
Version: 1


First person to use this name on MO: Erlon Bailey

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Nomenclature:

Rank: Species

Status: Accepted

Name: Fomitopsis scortea

ICN Identifier: missing

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Author: (Corner) T. Hatt.

Citation: Mycoscience 44 (4): 274 (2003) [MB#534449]

Deprecated Synonyms: Tyromyces scorteus Corner, Fomitopsis scorteus (Corner) T. Hatt., Tyromyces subroseiporus Corner

Classification:

Domain: Eukarya

Kingdom: Fungi

Phylum: Basidiomycota

Class: Agaricomycetes

Order: Polyporales

Family: Fomitopsidaceae

Genus: Fomitopsis

Lifeform:
Notes on Taxonomy: [Edit]

Country (state) :
Solomon islands

Location details : South Solomons
Substrate details : on fallen trunk in forest
Status : Type
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Brief Description: [See More | Edit]

Description type : Original description
Description : Tyromyces scorteus sp. nov.
Ins. Solomonenses, Guadalcanal. Tsuva, 8 Nov. 1965, RSS 1767; herb. Corner.

Pileus -4.5 cm in radius, effuso-reflexed, semicircular, slightly ascending, fusing laterally in flanges, somewhat radially ruguloso-flbrillose, nearly smooth, drying matt and uneven, paie fawn ochraceous with a few faint darker zones; margin white, entire. Pores at the margin of the pileus arising as shallow regular meshes 100-200 µm wide, soon becoming radially elongate and anastomosed by development mainly of thin radial dissepiments, shortly and narrowly daedaleoid, then variously gyrose-irpicoid with dissepiments -4 mm deep, white then pale fawn buff.

Flesh -3 mm thick at the base of the pileus, coriaceous, flexible, white then pallid concolorous, without a crust.

On a fallen trunk in the forest. Solomon Islands, Guadalcanal.

Spores 4-5.5 × 2.3-3 µm, white, smooth, narrowly ellipsoid, aguttate, inamyloid. Basidia 18-22 × 4-5 µm, clamped; sterigmata 2-4, 2.5-3 µm long. Hymenium compact, not thickening. Cystidia, gloeocystidia and hyphal pegs none. Hyphae subdimitic (dl), clamped, not encrusted, not agglutinated, not swelling in potash; I-ve; skeletal cells -500 × 4-5.5 µm, (? longer), walls -2 µm thick, often with a branch near the distal clamp, concatenate or continuing as a generative hypha, 3-3.5 µm wide in the dissepiments; generative hyphae 2-4 µm wide, 1.5-3 µm, in the dissepiments, thin-walled but with transitions to the skeletal cells. Surface of pileus composed of appressed radiating hyphae with ends projecting slightly here and there, no crust.

The construction would be taken as typically dimitic until the thick-walled hyphae were traced and found to be elongate skeletal cells. The species can be taken as Stecchericum without gloeocystidia or as non-amyloid Stecchericium. I collected it simply as Irpex.
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