Loweomyces fractipes
| Loweomyces fractipes | |
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| Loweomyces fractipes | |
| Scientific classification | |
| Kingdom: | Fungi |
| Division: | Basidiomycota |
| Class: | Agaricomycetes |
| Order: | Polyporales |
| Family: | Steccherinaceae |
| Genus: | Loweomyces |
| Species: | L. fractipes |
| Binomial name | |
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Loweomyces fractipes (Berk. & M.A.Curtis) Jülich (1982) |
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Loweomyces fractipes is a species of poroid fungus in the family Steccherinaceae, and the type species of the genus Loweomyces. It is a widely distributed species, found in North America, Europe, Central America, South America, and Korea.
The fungus was originally described in 1872 as Polypores fractipes by Miles Berkeley and Moses Ashley Curtis. The type specimens had been sent to Berkeley by American botanist Henry William Ravenel. It has been transferred to many different polypore genera in its taxonomic history. William Murrill moved it to Grifola in 1904, while it was later transferred to Abortiporus (Bondartsev, 1959), Heteroporus (Fidalgo, 1969), and Spongipellis (Kotlaba & Pouzar, 1976). In 1982, Walter Jülich transferred it to Loweomyces, originally a subgenus of Spongipellis but elevated to generic status by Jülich.
Heterotypic synonyms (having different types) of Loweomyces fractipes include Abortiporus tropicalis Murrill (1910), Polyporus delicatus Berk. & M.A.Curtis (1872), and Polyporus humilis Peck (1874).
The fruit bodies of Loweomyces fractipes can be quite variable in form. The stipe is placed centrally to laterally, dimidiate with fan- to kidney-shaped caps or almost effused-reflexed, 1–4 cm wide, 1–5 mm thick, soft when fresh, brittle when dry. The upper surface of the cap is white in young specimens, but becomes yellowish with age, at first finely tomentose, with age more adpressed and semi-glabrous, often somewhat wrinkled, usually azonate. When the stipe is present it is white to yellowish, measuring up to 4 cm long, and it is cylindric to flattened and expanded towards the cap. The colour of the pore surface is white to cream, and consists of tiny, angular pores numbering 4–5 per millimetre. The context in cap and stipe are white and comprise two layers: a hard inner or lower layer that is covered with a much looser layer, which may be agglutinated on the surface with age. The tube layer is the same colour as the pore surface, and up to 3 mm thick.
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