Public Description of Phylloporus rhodoxanthus (Schwein.) Bres.

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Name: Phylloporus rhodoxanthus (Schwein.) Bres.
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Description status: Unreviewed

Taxonomic Classification:

Domain: Eukarya
Kingdom: Fungi
Phylum: Basidiomycota
Class: Agaricomycetes
Order: Boletales
Family: Boletaceae

General Description:

Cap: 2.5-10 cm; convex, becoming broadly convex to more or less flat; dry; fairly smooth, sometimes beginning to crack in age; red to reddish brown, or olive brown to brown; fading; the margin inrolled when young, and with a small projecting sterile portion.

Gills: Running down the stem; distant or nearly so; yellow to golden yellow, dirtying with age; not bruising blue; thick; sometimes forking; sometimes with cross-veins.

Stem: 3-9 cm long; .5-1.5 cm thick; more or less equal, or tapering to base; sometimes appearing “ribbed” near the apex at the termination points of the gills; yellowish, with reddish dots and scruffies; basal mycelium yellow.

Flesh: White to pale yellow.

Odor and Taste: Odor not distinctive; taste mild.

Chemical Reactions: Cap surface blue with ammonia.

Spore Print: Yellowish to dirty yellow.

Microscopic Features: Spores 8-14 × 3-5 µ; smooth; long-elliptical to sausage-shaped.

Diagnostic Description:

Yellow basal mycelium will help separate it from Phylloporus leucomycelinus which has white basal mycelium.


Widely distributed

Mycorrhizal with broad leaf trees, especially oaks and Beech; growing alone, scattered, or gregariously; summer and fall.

Look Alikes:

Phylloporus leucomycelinus




Kuo, M. (2005, March). Phylloporus rhodoxanthus: The “gilled bolete.” Retrieved from the MushroomExpert.Com Web site:


Current Name:
Phylloporus rhodoxanthus (Schwein.) Bres., Fung. trident. 2(14): 95 (1900)

Agaricus rhodoxanthus Schwein., Syn. Fung. Carol. Sup.: 83 (1822)
Flammula rhodoxanthus (Schwein.) Lloyd, Mycol. Notes (Cincinnati) 1(3): 17 (1889)
Gomphidius foliiporus Murrill, Mycologia 35(4): 432 (1943)
Gomphidius rhodoxanthus (Schwein.) Sacc., Syll. fung. (Abellini) 5: 1139 (1887)
Paxillus rhodoxanthus (Schwein.) Peck, Bull. N.Y. St. Mus. nat. Hist. 6: 212 (1899)
Phylloporus bogoriensis Höhn., Sber. Akad. Wiss. Wien, Math.-naturw. Kl., Abt. 1 123: 89 (1914)
Phylloporus foliiporus (Murrill) Singer, Persoonia 9(4): 424 (1978)
Phylloporus rhodoxanthus subsp. albomycelinus Singer, in Snell & Dick, Boleti of Northeastern North America (Lehre): 47 (1970)
Phylloporus rhodoxanthus subsp. americanus Singer, Revue Mycol., Paris 3(4-5): 171 (1938)
Phylloporus rhodoxanthus subsp. bogoriensis (Höhn.) Singer, Farlowia 2: 282 (1945)
Phylloporus rhodoxanthus subsp. congolensis Heinem., (1955)
Phylloporus rhodoxanthus subsp. foliiporus (Murrill) Singer, in Mao, Farlowia 2: 280 (1945)
Phylloporus rhodoxanthus (Schwein.) Bres., Fung. trident. 2(14): 95 (1900) subsp. rhodoxanthus
Xerocomus rhodoxanthus (Schwein.) Bresinsky & Manfr. Binder, in Bresinsky & Besl, Regensb. Mykol. Schr. 11: 233 (2003)

Description author: walt sturgeon (Request Authorship Credit)