Hyphodontia barba-jovis

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

Synonyms

= Hydnum barba-jovis Fr. 1821, Syst. Mycol. I, S.421.
= Hyphodontia irpicoides (Karst.) Burds. & Larsen 1983, Mycotaxon 17: 515.: = Kneiffia irpicoides Karst. 1889, Krit. Öfv. Finl. Basidsv., S. 368.
= Odontia crassa Rick 1932, Egatea 17: 279.

Type material: none

Select illustrations:

sketch of sections

Macromorphology:

Resupinate, odontioid, creme colored, margin thinning out, aculei very dense, up to 3 mm long, apikally strongly fimbriate. Very often aculei are confluent forming multiple tips. Tips of aculei somewhat darker than the rest. Color foto of fresh fruitingbody see Breitenbach & Kränzlin (1986), picture Nr. 78.

Micromorphology:

Spores:: 4,5-6 x 3,5-4,5 µm, ellipsoid, smooth, thinnwalled, inamyloid, with one or several small droplets each.
Basidia:: 12-20 x 4-5 µm, young clavate, mature cylindrical median with a slighlty constriction and one basal clamp.
Sterigmata:: four, up to 3 µm long
Cystidia:: Tubular tramacystidia, 5-8 µm in diameter, several 100 µm long, walls up to 2,5 µm thick, apikally thinwalled, apex optuse. The tramacystidia arise from subicular hyphae with one clamp each.
Clamps:: All primary septa with one clamp each
Hyphae:: Hyphal system monomitic. Basal hyphae 2,5-4 µm in diameter, thin- to slightly thickwalled (< 1 µm), loosely branched. Subhymenial hyphae 3-5 µm in diameter, thinnwalled, loosely branched. Hyphal branching by subseptal outgrowing or by outgrowing of clamps.
Aculei:: The center of the aculei is built by tubular tramacystidia. Generative hyphae are running parallely to tramacystidia. Hymenium is running straigt up to the tips of aculei.

Habitate and Substrate

Rotten deciduous wood in humid fertile forests with e.g. Corylus, Fraxinus, Quercus. Also on Pinus.

Biogeography

H. barba-jovis has been reported from all continents except Australia.

Remarks

H. barba-jovis can be mixed with H. abieticola. Both species are only distinguishable by spores, tubular tramacystidia, length of aculei and substrate:


           H. abieticola            H. barba-jovis

Spores:    cylindrical              ellipsoid
           5-6,5 x 3-4,5 µm         4,5-6 x 3,5-4,5 µm
Cystidia:  up to ca. 300 µm long    longer than 300 µm
Aculei:    up to 1 mm long          up to 3 mm long
Substrate: mostly coniferous wood   mostly deciduous wood

Hjortstam & Bononi (1987) remarked on his Brasilian collections the lack of clamps on septa which are located in the center of the aculeus. We can confirm this in our material. The lack of clamps could be interpreted as secondary septa.

Herbarium specimens

Sweden, Västergötland, Göteborg, Botaniska trädgården, Naturpark, on a twig of Corylus, leg. T. Nathorst-Windahl, 12.06.1942, Nr. 3000, Herbarium GB.
Sweden, Halland, Släp par., Sandsjöbacka, on a fallen twig of Quercus robur, leg. J. Jeppson, 02.08.1974, Jeppson 766, Herbarium GB.
Poland, Blizna, Augustow Distr., on a fallen twig of Quercus sp., leg. S. Domansky, 23.08.1964, Domanski 4336, Herbarium GB.
Germany, Bayern, Oberallgäu, Hinterstein, river Ostrach near Sulzbachwand, ca. 850 m alt., forst with Fraxinus excelsior, Alnus incana and Salix eleagnos, on deciduous wood, leg. G. & E. Langer, 19.09.1991, GEL 2355, Herbarium G. & E. Langer.
Spain, Santander Prov., Puerto de Palambera-Saja, 840 m alt., on Corylus sp., leg. L. Ryvarden, 13.11.1977, LR 15357, Herbarium O.
USA, Florida, Alachua County, W of Newman Lake, auf Pinus taeda L., leg. H.H. Burdsall jr., 31.07.1972, HHB 6829, Herbarium GB.
Canada, Quebec, Cantley, Ginns farm, on a fallen twig of Pinus strobus, leg. N. & L. Hallenberg, 10.08.1982, NH 6509, Herbarium GB.
Kenia, Eastern Prov., Meru Distr., Mt. Kenya, NO slope, Chigora trek, 1900-2200 m alt., leg. L. Ryvarden, 31.01-01.02.1973, LR 9688, Herbarium O.
Costa Rica, Orosi valley, Orosi, Rio Macho, secondary forest beside a bridge over Rio Macho, 1140 m alt., leg. E. & G. Langer, 10.02.1989, GEL1622, Herbarium G. & E. Langer.
Brasilia, Rio Grande do Sul, S. Leopoldo, leg. J. Rick, 1933, Rick 19888, Herbarium O.
Taiwan, Pintung Distr., Nationalpark Kenting, ca. 200 m alt., leg. E. & G. Langer, F. Oberwinkler, 01.07.1990, FO 42083, Herbarium F. Oberwinkler.
Taiwan, Pintung Distr., Nationalpark Kenting, ca. 200 m alt., leg. E. & G. Langer, F. Oberwinkler, 30.06.1990, FO 42066, Herbarium F. Oberwinkler.

References

Breitenbach, J., KrŠnzlin, F. 1986. Pilze der Schweiz. Band 2. Heterobasidiomycetes, Aphyllophorales, Gastromycetes. Verl. Mycologia, Luzern. 416 Seiten.
Hjortstam, K., Bononi, V.L.R. 1987. A contribution to the knowledge of Corticiaceae s.l. (Aphyllophorales) in Brazil. Mycotaxon 28(1): 1-15.

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Dr. Ewald Langer - 22. Aug. 1995
ewald.langer@uni-tuebingen.de