Hyphodontia nespori

(Bres.) John Eriksson & Hjortst. 1976, in Eriksson & Ryvarden, The Corticiaceae of North Europe, Vol. 4, p. 655.

Select illustrations:

[image]

[image] A [image] B [image] H. aff. nespori

Synonym:

= Odontia nespori Bres. 1920, Ann. Mycol. 18(1-3): 43.
Type: Czech Republic, Bohemia, on Quercus sp., leg. Bresadola, Herbarium GB.

Macromorphology:

Resupinate, odontioid, white to yellowish, without aculei up to 500 ╡m thick, aculei 100-200 ╡m high.
Colour photo in Breitenbach & Kränzlin (1986) , picture No. 83.

Micromorphology:

Spores:
4.5-6 x 2-3 ╡m, cylindric to slightly allantoid, thin-walled, smooth, inamyloid, with one droplet each.
Basidia:
15-30 x 3-4 ╡m, suburniform, with 1-3 constrictions and one basal clamp each.
Sterigmata:
Four, 3 ╡m long.
Cystidia:
Capitate cystidia, sometimes a little thick-walled at the base (< 0.5 ╡m), 4-5 ╡m in diameter, apical with or without exsudat.
Clamps:
All primary septa with one clamp each.
Hyphae:
Hyphal system monomitic. Subhymenial hyphae, thin-walled, 3-4 ╡m in diameter, not or strong incrusted with up to 4 ╡m big crystals, very densely hyphal ramification, subicular hyphae 3-5 ╡m in diameter, thick-walled (up to 1 ╡m), loosely hyphal ramification.
Aculei:
Hyphae 4-5 ╡m in diameter, thin-walled up to thick-walled (up to 1 ╡m), everytime strong incrusted with characteristical, up to 4 ╡m big, spherical-formed crystals. Aculeal end hyphae thin-walled, sometimes with secondary septa.

Habitate and substrate:

Montane coniferous forests with temperate climate. Substrate mainly conifers: Pinus, Picea, Tsuga. Also on deciduous wood: Alnus, Quercus.

Biogeography:

Central Europe, Carpathian Mountains, Jakutsk (Sibiria), North America (Gilbertson & Blackwell 1987) . In Scandinavia rarely (Eriksson & Ryvarden 1976) . It is remarkeable, that specimens from subtropical to tropical areas (Teneriffa, Africa, Taiwan) are restricted to montane areas.

Remarks:

Different characters of H. nespori are the thin-walled to thick-walled, obtuse and incrusted end hyphae of the aculei in combination with cylindric to slightly allantoid spores. Similar end hyphae of the aculei also are found in some other species: 
Spores shorter than 6 ╡m
  Spores wider than 3 ╡m
    Aculei up to 50 ╡m high.......H. rimosissima

    Aculei up to 500 ╡m high......H. aspera

  Spores more narrow than 3 ╡m....H. nespori
Spores longer than 6 ╡m...........H. quercina
Specimen FO 41697 from Taiwan has all characters of a typical H. nespori species but in contrast has a very small an tiny basidiocarp with small abnorm basidia.

Herbarium specimens:

Denmark, Själland , Sorö Sönderskov, on coniferous wood, leg. N. Hallenberg, 18-21.09.1980, Herbarium GB.
Sweden, Dalarna , Älvdalen, Stora Rensjön, Reservat, 500 m alt., on decaying wood of cf. Pinus sylvestris, leg. E. & Å. Strid, 17.09.1969, No. 5988, Herbarium GB.
Germany, Baden-Württemberg , Nordschwarzwald, Würzbach, Bannwald Waldmoortorfstich, on wood of Picea abies, ca. 850 m alt., leg. E. Langer, 15.01.1989, GEL 799, Herbarium G. & E. Langer.
Germany, Bayern, Oberallgäu , Oberjoch, forest west of Berghaus Iseler, ca. 1300 m alt., mountain forest with Fagus sylvatica, Picea abies, Abies alba, on Picea abies, leg. G. & E. Langer, 22.09.1991, GEL 2390, Herbarium G. & E. Langer.
Czech Republic, Bohemia , on Quercus sp., leg. Bresadola, Herbarium GB. Spain, Canaries, La Gomera, Garajonay National park, El Cedro, on deciduous wood, leg. N. Hallenberg, 15.03.1989, NH 11132, Herbarium GB.
Spain, Canaries , Teneriffa, Cruce de las Carboneras, hacia la fuente de los Pulgos, leg. L. Ryvarden, LR 26568, Herbarium O.
Italy, Latina , Cicero, Nat. Park, Selva de Cicero, on Pinus pinea, leg. K. Hjortstam, K.-H. Larsson, L. Ryvarden, 22.25.10.1984, Hjm 14918, Herbarium GB.
Turkey, NO Anatolia , Trabzon, south of Camlihemsin, on Alnus barbata, leg. N. Hallenberg, 05.10.1989, NH 11415, Herbarium GB.
Canada, Quebec , Cantley, Ginns┤ farm, mixed forest, on a fallen branch of Quercus sp., leg. L. & N. Hallenberg, 02.08.1982, NH 6387, Herbarium GB.
USA, Minnesota , Clearwater county, Itasca state park, Itasca lake, leg. L. Ryvarden, 16.09.1977, LR 14263, Herbarium O.
Kenya, Aberdare Mts. , Kimakia Forest station, ca. 2200-2400 m alt., 0░ 45┤S 36░50┤E, leg. L. Ryvarden, 16.-18.01.1973, LR 8890, Herbarium O.
Tanzania, Kilimanjaro Prov. , Mt. Kilimanjaro, southern slope above Mweka, 1800-2300 m alt., 3░14┤S 37░20┤E, leg. L. Ryvarden, LR 10287, Herbarium O.
Taiwan, Gu-Kuan , ca. 800-900 m alt., leg. E. & G. Langer, 21.06.1990, FO 41697, Herbarium F. Oberwinkler.
Taiwan, Nantou , north-east of Puli, Hui sun, ca. 700 m alt., leg. E. & G. Langer, 24.06.1990, FO 41837, Herbarium F. Oberwinkler.
Taiwan, Ho-Hwan-San , Taroko National park, ca. 2500 m alt., forest with Abies kawakamii and Tsuga sp., leg. E. & G. Langer, F. Oberwinkler, 04.07.1990, FO 42169, Herbarium F. Oberwinkler.

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Dr. Ewald Langer - 27. Febr. 1996
ewald.langer@uni-tuebingen.de