Fevansia

Fevansia
Scientific classification
Kingdom:	Fungi
Division:	Basidiomycota
Class:	Agaricomycetes
Order:	Russulales
Family:	Albatrellaceae
Genus:	Fevansia Trappe & Castellano (2000)
Type species
Fevansia aurantiaca Trappe & Castellano (2000)

Fevansia is a fungal genus in the family Albatrellaceae. A monotypic genus, it contains the single rare truffle-like species Fevansia aurantiaca, found in old-growth forests of Oregon. The name Fevansia honors Frank Evans, who collected the holotype specimen; is Latin for "pale orange", referring to the color of the peridium.

Truffles are fungi that have evolved to be hypogeous, or below the ground, and thus they have reduced morphological features. Some of the features commonly analyzed on truffles are the peridium, or the outside, the gleba, which is the inner tissue which contains the spores, and the spores themselves.

The peridium of Fevansia is 100–200 µm thick. The gleba is firm and moist and the color is pale orange with either a pink or an orange tint. The spores are 10–13 by 3.5–5 µm, spindle-shaped, and smooth and appear in large groups to be gray-yellow and appear pale yellow when observed singly.

The fungus was originally classified as a member of the family Rhizopogonaceae (order Boletales) because of its general morphological similarity to the genera Alpova and Rhizopogon section Rhizopogonella. Recent (2013) molecular phylogenetic analysis, however, indicates that Fevansia is a member of the family Albatrellaceae in the order Russulales. For this reason, it is suspected to be mycorrhizal (like all other known Albatrellus species), although this has not yet been confirmed.

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Wikipedia