Hyphodontia alutacea

(Fr.) John Eriksson 1958, Symb. Bot. Ups. 16(1): 104.

Select illustration:

[image] [image]

Synonyms:

= Hydnum alutaceum Fr. 1821, Syst. Mycol. I., p.417.
= Odontia alutacea (Fr.) Bres. 1897, Att. Acad. Sci. Lett. Art. Agiati 3(3): 97.
Neotype: Sweden, Småland, Femsjö, "Flahult skog", south of Dröplastigen, slope towards a bog. On the underside of a log of Pinus, leg. S. Lundell, J. Stordal, 02.09.1949, Fungi exs. suec. n. 2142, Herbaria UPS, GB
= Hyphodontia alutacea var. mammilaecrinis John Eriksson & Hjortst. 1969, Sv. Bot. Tidskr. 63(2): 230.
Holotype:Sweden, Småland, Värnamo, between Björs and Moen, leg. J. Eriksson, 30.-31.10.1959, Eriksson 5200, Herbarium GB.

Macromorphology:

Resupinate, odontioid, white to ochraceous, margin thinning out, aculei up to 1 mm long, very crowded, sometimes grouped and then coralloid. Color photo in Breitenbach & Kränzlin (1986), photo No. 85.

Micromorphology:

Spores:
6-9 x 1.5-2 µm, allantoid, smooth, thin-walled, inamyloid.
Basidia:
10-20 x 4-5.5 µm, young clavate, mature suburniform, with one to two median constrictions and a basal clamp each.
Sterigmata:
Four, up to 3 µm long.
Cystidia:
Tubular tramacystidia, up to ca 75 µm long, 4-7 µm in diameter. Walls thin-walled, with several constrictions, apically obtuse. They arise from subicular hyphae not far from beyond the suhymenium. Phloxine stains their contents stronger that the surrounding hyphae.
Clamps:
All primary septa with one clamp each.
Hyphae:
Hyphal system monomitic. Subicular hyphae 2-4 µm in diameter, thick-walled (up to 1 µm). Subhymenial hyphae 2-4 µm in diameter, thin-walled. The hyphae often have constrictions. Hyphal ramification by subseptal outgrowing or outgrowing of clamps.
Aculei:
Hyphae of the aculei running parallely. The end hyphae in the tips are short-celled with clamps.

Habitate and substrate:

Rotten coniferous wood: Picea, Abies, Pinus. Seldom on deciduous wood.

Biogeography:

The known records point to a northern hemispherical distribution. Furukawa (1974) records H. alutacea also from Japan.

Remarks:

H. alutacea, H. curvispora and H. latitans are a natural group within the genus Hyphodontia. They all have thin-walled tramacystidia. This character delimits them clearly from those species which have thick-walled tubular tramacystdia and allantoid spores. H. alutacea, H. curvispora and H. latitans all have allantoid to semicircle-like spores. 

Hymenium odontioid
   Spores allantoid.............H. alutacea
   Spores semicircle-like.......H. curvispora
Hymenium irpicoid to poroid.....H. latitans

Herbarium specimens:

Sweden, Småland, Femsjö, "Flahult skog", south of Dröplastigen, slope towards abog, on a log of Pinus-, leg. S. Lundell & J. Stordal, 02.09.1949, Fungi exs. suec. n. 2142, Herbarium GB.
Sweden, Västergötland, Alingsås, St. Lygnö, Störtared, on a log of Populus tremula, leg. J. Eriksson, 04.09.1969, Eriksson 1712, Herbarium GB.
Sweden, Västmanland, Nora, Linde, on Picea, leg. J. Jeppson, 16.09.1973, Jeppson 558, Herbarium GB.
Sweden, Bohuslän, Västerlanda, between Lysevatten and Torrgårdsvatten, on a fallen twig of Picea abies, leg. J. Eriksson & T. Hallingbäck, 20.08.1975, Eriksson 9147, Herbarium GB.
Austrich, Tirol, Lechtal, Oberstockach, Sulzlbachtal, between Sulzl-Alm (1465 m alt.) and Simms-Hütte (2002 alt.), leg. E. Langer, 09.09.1987, GEL 458, Herbarium G. & E. Langer.
Germany, Baden-Württemberg, Langenau, Engelenhai, storm demaged area, ca. 550 m alt., on wood of Picea abies, leg. E. Langer, 13.03.1991, GEL 2212, Herbarium G. & E. Langer.
Germany, Bayern, Oberallgäu, Unterjoch, Pfeiffermühle, ca. 1000 m alt., on wood of Picea abies, leg. E. Langer, 17.09.1991, GEL 2296, Herbarium G. &amp.; E. Langer.
Spain, Huesca Prov., 11 km northeast of Hecho in a Abies-forest, 1100 m alt., on Fagus, leg. L. Ryvarden, 10.11.1977, LR 15195, Herbarium O.
USA, New York State, Tully, Tully Forest, on Pinus resinosa, leg. R.L. Gilbertson, Gilbertson 2502, Herbarium GB.
Canada, Quebec, Gatineau National Park, between Keogan Lodge and Fortune Lake, on Abies balsamea, leg. B. & J. Eriksson, 14.10.1967, Eriksson 9080, Herbarium GB.

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Dr. Ewald Langer - 5. March 1996
ewald.langer@uni-tuebingen.de