Hyphodontia pruni
(Lasch) Svrcek 1973, Ceska Mykol. 27(4): 204.
Select illustration:
![[image]](pruni0.gif)
![[image]](pruni1i.gif)
Synonyms:
- = Hyphodontia pruni (Lasch) John Eriksson & Hjortst in Eriksson & Ryvarden, 1976, The Corticiaceae of North Europe, Vol. 4, S.663.
- = Odontia pruni Lasch in Rabenhorst 1851, Fungi europaei exsiccati, Nr. 1514.
- Type: on Prunus spinosa, comm. Bresadola, in Herb. L. Romell, Herbarium S, K.
- = Hyphodontia bugellensis (Ces.) John Eriksson 1958, Symb. Bot. Ups 16(1): 104.
- = Odontia bugellensis Ces. in Rabenhorst 1855, Klotzschii herb. viv. mycol., Nr. 1915; Bot. Zeitschrift 13(16):238.
- Type: Herbaria S, K.
Macromorphology:
Resupinate, odontioid white to cream-coloured, margin distinct, aculei up to ca. 100 µm high.
Micromorphology:
- Spores:
- 5-6.5 x 3.5-5 µm, ellipsoid, thin-walled, smooth, inamyloid, with one droplet each.
- Basidia:
- 22-35 x 4-5 µm, suburniform with one up to two constrictions and one basal clamp each, often basidial repetition.
- Sterigmata:
- Four, up to 5 µm long.
- Cystidia:
- Capitate cystidia, 15-40 x 3-5 µm, with one basal clamp each. The cystidia arise from the hymenium.
- Clamps:
- All primary septa with one clamp each.
- Hyphae:
- Hyphal system monomitic. Hyphae 2-4 µm in diameter, thin-walled. Hyphae of the subhymenium may be strongly incrusted with crystals, which are not soluble in 5% KOH solution.
- Aculei:
- Hyphal endings of the aculei somewhat sinuose, obtus or slightly subulate.
Habitate and substrate:
In wet forests on deciduous wood: Prunus, Ulmus, Corylus, Acer, Alnus, Myrica.
Biogeography:
There are many records from Europe. Other specimens come from North America, the Canaries and the Chang Bai Shan in China. Malençon (1957) made a list of this species in his Flora of the Atlas mountains.
Remarks:
H. pruni could be mixed up with H. rimosissima. To distinguish those two species, the hyphal endings of the aculei must be analyzed very carefully:
|
| H. pruni
| H. rimosissima
|
| Hyphal endings
| tapering
| obtuse
|
| in the aculeus
|
|
|
For a long time the interpretation of H. bugellensis and H. pruni was not exactly clear. Eriksson & Ryvarden (1976) took both names as synonyms, while Hjortstam (1991) demands a clear separation because of the different spore morphology. He gave the following characters for distincton:
|
| H. bugellensis
| H. pruni
|
| Spores size:
| (5-)5.5-6(-6.5) x 3.5-4 µm
| up to 6.5-7 µm long
|
| Spores walls:
| clearly thick-walled
| thin-walled
|
| Distribution:
| Southern Europe
| Northern Europe
|
In the analyzed specimens of this study these differences could not be verified. Because of this I follow the concept of Eriksson und Ryvarden and synonymize H. bugellensis with H. pruni.
Herbarium specimens:
Sweden, Västergötland, Medelplana, Råbäck, Kinnekulle, on a decaying trunk of Ulmus sp., leg. K. Hjortstam, 09.10.1970, Hjm 5257, Herbarium GB.
Sweden, Öland, Resmo sn., west Steilküste near the comunity borderline, on Corylus avellana, leg. J. Jeppson, 14.05.1972, JJ 272, Herbarium GB.
Sweden, Uppland, Uppsala, Vårdsätra Naturpark, on a fallen trunk of Ulmus glabra, leg. Å. Strid, J. Eriksson, 05.09.1962, Herb. K. Hjortstam, Herbarium GB.
Sweden, Närke, Hallsberg, Herrfallsäng, wet Ulmus-Fraxinus forest, on deciduous wood, leg. N. Hallenberg, 23-24.09.1981, Herbarium GB.
Sweden, Uppland, Lohärad sn., Erken, leg. L. Romell, 19.05.1918, Herbarium S.
Germany, Bayern, Oberallgäu, Hinterstein, forest near the Ostrach underneath the Sulzbachwand, on Fraxinus excesior, ca. 850 m alt., leg. E. Langer, 19.09.1991, GEL 2327, Herbarium G. & E. Langer.
Italy, Aquila, Abruzzi National park, Chamosciara, on deciduous wood, 1200-1700 m alt., leg. K. Hjortstam, K.-H. Larsson, L. Ryvarden, Hjm 15055, Herbarium GB.
Turkey, Northeast-Anatolia, Trabzon, monastery Sumela, on a Picea branch, 1000-1100 m alt., leg. N. Hallenberg, 02.-04.10.1989, NH 11288, Herbarium GB.
Spain, Canaries, La Gomera, Monte de Tobares, 3 km south-west of La Palmita, in a deciduous wood, leg. L. Ryvarden, 16.01.1974, LR 12558, Herbarium O.
Spain, Canaries, El Hierro, Fayal-Brezal, pista hacia Cumbre de Los Reyes, 1475 m alt., on deaying branches of Myrica faya, leg. E. Beltrán & L. Rodriguez, Okt. 1988, TFC-Mic. 3217, Herbarium O.
Canada, Quebec, Ganineau National park, bei Fortune Lake, on a fallen branch of Acer saccharum, leg. B. & J. Eriksson, 22.10.1967, Eriksson 9242, Herbarium GB.
Canada, British Columbia, Vancouver Island, Lake Cowichan provicial forest, on a trunk of Alnus rubra, leg. B. & J. Eriksson, 08.09.1967, Eriksson 7803, Herbarium GB.
China, Jilin, Chang Bai Shan Forest Reserve, Huang, Song Pu, 1200 m alt., on Picea jezoensis, leg. L. Ryvarden, 11.-17.09.1983, LR 21497, Herbarium O.
Go to:
Dr. Ewald Langer - 28. Febr. 1996
ewald.langer@uni-tuebingen.de