The blue-green hydnellum, Hydnellum caeruleum (Hornem.) P. Karst.
Calodon caeruleus (Hornem.) P. Karst.
Bidr. Känn. Finl. Nat. Folk 37: 106 (1882)
Calodon cyaneotinctus (Peck) Snell
Mycologia 37: 51 (1945)
Calodon ferrugipes (Coker) Snell
Mycologia 37: 48 (1945)
Hydnellum alachuanum (Murrill) Coker & Beers
The stipitate hydnums of the eastern United States: 66 (1951)
Hydnellum cyaneotinctum (Peck) Banker
Mem. Torrey bot. Club 12: 164 (1906)
Hydnellum ferrugipes Coker
J. Elisha Mitchell scient. Soc. 34: 188 (1919)
Hydnellum inquinatum Banker
Mycologia 5(6): 202 (1913)
Hydnum alachuanum (Murrill) Murrill
Bull. Torrey bot. Club 67: 281 (1940)
Hydnum caeruleum Hornem.
Mycol. eur. (Erlanga) 2: 162 (1825)
Hydnum cyaneotinctum Peck
Bull. Torrey bot. Club 30: 98 (1903)
Hydnum suaveolens var. caeruleum (Hornem.) Fr.
Epicr. syst. mycol. (Upsaliae): 507 (1838)
Sarcodon alachuanus Murrill [as ‘alachuanum‘]
Bull. Torrey bot. Club 67: 275 (1940)
Blue corky spine fungus
Blauwgestreepte stekelzwam (Dutch)
Hydne bleu d’azur (French)
Blauer Korkstacheling (German)
Jelenkovka modrastá (Slovak)
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Cap: 3-12 cm diameter, convex to plane, sometimes with a slight central depression, lobed, tomentose becoming matted or glabrous towards center, often pitted or colliculose, color highly variable depending on age (white, yellowish, brown, bruised areas grayish-violet to blackish blue or a mixture of these); flesh in two layers: spongy outer layer and tough and woody inner core; often engulfs substrate litter in fruiting body.
Stem: 2-9 cm high x 1-3 cm thick, central or off-center, cylindrical with a slightly bulbous base, tomentose below to matted or glabrous above, spongy subsurface layer, hard at center, concolorous.
Spines: up to 6 mm long, decurrent, crowded, white with blue tints when young, later brownish.
Spores: 4.5-7 x 3.5-5 µm, subglobose, brownish; ornamentation tuberculate, not prominent, rounded to flattened, non-amyloid.
Spore print: brown.
Odor and taste: farinaceous.
Habitat: solitary to gregarious or fasciculate, on grounds in coniferous woods; abundant in late summer and fall after heavy rains, especially under spruce or jack pine.
Chemical reactions: context tissue olive green in KOH or NH4OH.
The terphenylquinones aurantiacin (Montfort et al., 1966; Sullivan et al., 1967), dihydroaurantiacin dibenzoate, and thelephorin have been isolated from the ether and chloroform extracts of H. caeruleum (Sullivan et al., 1967). Later investigation of the methanol extract of the fruiting bodies resulted in the isolation of six p-terphenyl derivatives named thelephantins I-N (Quang et al., 2004).
Polysaccharides extracted from the mycelial culture of H. caeruleum and administered intraperitoneally into white mice at a dosage of 300 mg/kg inhibited the growth of both Sarcoma 180 and Ehrlich solid cancers by 60% (Ohtsuka et al., 1973).
Montfort ML, Tyler VE, Brady LR.
Isolation of aurantiacin from Hydnellum caeruleum.
J Pharm Sci. 1966 55(11):1300-2.
Ohtsuka S, Ueno S, Yoshikumi C, Hirose F, Ohmura Y, Wada T, Fujii T, Takahashi E.
Polysaccharides having an anticarcinogenic effect and a method of producing them from species of Basidiomycetes.
UK Patent 1331513, 26 September 1973.
Quang, DN, Hashimoto, T, Hitaka, Y, Tanaka, M, Nukada, M, Yamamoto, I, Asakawa, Y.
Thelephantins I-N; p-terphenyl derivatives from the inedible mushroom Hydnellum caeruleum.
Phytochemistry. 2004 65(8):1179-84.