Index Fungorum no. 183

Effectively published 22/08/2014 06:51:52  (ISSN 2049-2375)

Nomenclatural novelties : Alfredo Vizzini

Exsudoporus Vizzini, Simonini & Gelardi, gen.nov.
Basidiome stipitate-pileate with tubular hymenophore, epigeal, evelate; pileus convex to applanate, bright blood red, crimson-red, purplish-red, reddish-pink or reddish-brown, opaque to shiny, dry to subviscid with moist weather, glabrous to subpruinose or subtomentose; hymenophore poroid, adnate or slightly depressed around stipe apex; tubes yellow to olivaceous-brown; pores pinkish-red, reddish-orange, blood red to dark red, rarely yellowish-orange or yellow, often beaded with golden yellow or amber yellow droplets when young and fresh; stipe central, solid, yellowish to concolorous with the pileus, conspicuously reticulate with elongated, red meshes or deeply reticulate-alveolate; context pale yellow to bright yellow; tissues quickly turning dark blue when injured or exposed, then fading blackish; taste mild to acidic; spore print olive-brown; basidiospores smooth, subfusiform to ellipsoidal to ellipsoidal-fusoid; pleuro-, cheilo- and caulocystidia present; pileipellis an interwoven trichoderm tending to a cutis; hymenophoral trama bilateral-divergent of the 'Boletus-type'; clamp connections absent; stipe context inamyloid; ontogenetic development gymnocarpic.
    Holotype: Boletus permagnificus Pöder 1981.
Etymology: 'exsudo' from the Latin verb 'exsudare' (= to exude), refers to the pores forming exudate droplets when young.

Exsudoporus floridanus (Singer) Vizzini, Simonini & Gelardi, comb.nov.
    Basionym: Boletus frostii subsp. floridanus Singer, Mycologia 37(6): 799 (1945)

Exsudoporus frostii (J.L. Russell) Vizzini, Simonini & Gelardi, comb.nov.
    Basionym: Boletus frostii J.L. Russell, in Frost, Bull. Buffalo Soc. nat. Sci. 2: 102 (1874) ['1874-1875']

Exsudoporus permagnificus (Pöder) Vizzini, Simonini & Gelardi, comb.nov.
    Basionym: Boletus permagnificus Pöder, Sydowia 34: 151 (1981)