Hyphodontia efibulata
John Eriksson et Hjortst. 1969, Sv. Bot. Tidskr. 63(2): 226.
Holotype: Sweden, Västergötland, Bälinge par., west of Torp (Station), on Salix. sp., leg. K. Hjortstam, 01.09.1968, Herbarium GB.
Paratype: Sweden, Uppland, Alsike sn., Rickebasta träsk, on Salix, sp., leg S. Lundell, 25.07.1931, No. 1462, Herbarium GB. Sweden, Tome Lappmark, Abisko, eastern slope of the Nuolja, on Salix sp., leg. B. et J. Eriksson, 15.08.1960, No. 5204, Herbarium GB.
Select illustrations:
![[image]](efibul1i.gif)
![[image]](efibul2i.gif)
Macromorphology:
Resupinate, smooth, verruculose to odontioid, cream-coloured to beige, herbarium specimens of a corky consistence, margin clearly limited, up to ca 500 µm thick, confluent warts or aculei up to 1 mm high.
Micromorphology:
- Spores:
- 5.5-8 x 2.5-3.5 µm, cylindric to slightly allantoid, thin-walled, smooth, inamyloid, with one to two droplets each.
- Basidia:
- 8-20 x 3.5-5 µm, young clavate, mature cylindric with one slightly, mediane constriction, without basal clamps.
- Sterigmen:
- Two, seldom three, up to 3.5 µm long.
- Cystidia:
- Tubulare tramacystidia, 5-7 µm in diameter, up to several 100 µm long, walls multi layered and thick-walled (up to 2 µm), apical thin-walled and with or without crusty exsudat, which is soluble 5% KOH solution. The cystidia arise from the basal hyphae of the fruit body.
- Clamps:
- In the whole fruit body no clamps are present.
- Hyphae:
- Hyphal system monomitic. Basal hyphae 2-3 µm in diameter, slightly thick-walled (0.5-1 µm). Hyphae running very loosely in the basal parts of the fruit body, with characteristical hyphal cords. Subhymenial hyphae 2-3.5 µm in diameter, thin-walled, strongly branching.
- Aculei:
- Generative hyphae also running between the tramacystidia inside the aculei. Basidia are produced straight up to the tops of the aculei.
Habitate and substrate:
Humid biotopes. Until now only found on Salix.
Biogeography:
H. efibulata was hitherto only found in Skandinavia.
Remarks:
Hyphal cords, which are running in the subicilum next to the substrate, are very characteristical in the investigated herbarium specimens. The spores of the holotype are about 1 µm shorter than the ones of the herbarium specimens.
H. efibulata is similar to H. abieticola and H. barba-jovis relative to the morphology of the cystidia or spores. The absence of clamps in combination with basidia with two spores, gave Hassan (1981) the idea of the supposition of a haploid parthenogenetical behaviour of H. efibulata, in the same way as Boidin (1977) described it for Mycena galericulata (Scop. ex Fr.) S.F.Gray: Beside the normal, dikaryotical individuals (fruit bodies) with clamps, there are monokaryotical ones without clamps. Their geminated spores are not compatible with each another. The mycelium of one single spore is able to build a fruit body. Within the genus Hyphodontia there are three species described, wich have no clamps:
Basidia four spores
Spores ellipsoid...........H. tetraspora
Spores subglobos...........H. subglobosa
Basidia two spores...........H. efibulata
Herbarium specimens:
Norway, Hedmark, Lųten, Flöta Svartelva, PN 2741, on Salix sp., leg. E. Hųgholen, 29.08.1982, Hųgholen 31/82, Herbarium GB.
Sweden, Västergötland, Bälinge par., west of Torp (Bahnhof), on Salix. sp., leg. K. Hjortstam, 01.09.1968, Herbarium GB.
Sweden, Uppland, Alsike sn., Rickebasta träsk, on bark of a decaying branch of Salix sp., leg. S. Lundell, 25.07.1931, Lundell 1462, Herbarium GB.
Sweden, Tome Lappmark, Abisko, eastern slope of the Nuolja, on Salix sp., leg. J. Eriksson, 15.08.1960, Eriksson 5204, Herbarium GB.
Go to:
Dr. Ewald Langer - 12. Febr. 1996
ewald.langer@uni-tuebingen.de