Hyphodontia griselinae
(G.H. Cunn.) E. Langer
Select illustrations:
Synonyms:
- = Rogersella griselinae (G.H. Cunn.) Stalpers 1985, N. Z. Journ. Bot. 23: 305.
- = Corticium griselinae G. H. Cunn. 1963, N. Z. Dep. sci. industr. Res. Bull. 145: 71
(Basionym).
- Holotype: New Zealand, Wellington, Mt. Tongariro, 900 m alt., on Griselina lucida, leg. G. H. Cunningham, Nr. 17424, Herbarium PDD.
- = Rogersella asperula Liberta & Navas 1978, Can. J. Bot. 56: 1780.
- Holotype: Venezuela, Parque Nacional El Avila, on rotten wood, No. 1640, Herbarium
ISU.
- Isotype: Herbarium ARIZ.
Macromorphology:
Resupinate, odontioid, chalky white, margin diffuse thinning out, aculei
up to 50 µm high.
Micromorphology:
- Spores:
- 4-5 µm in diameter, globose, verrucose. slightly thick-walled (< 0.5 µm),
hyaline, inamyloid. TEM photo of spore ornamentation (60 K).
- Basidia:
- 12-15 x 4-5 µm, suburniform with one basal clamp each.
- Sterigmata:
- Four, 4-5 µm long.
- Cystidia:
- Capitate cystidia, up to 30 µm long, 4-5 µm in diameter, basal ventricose, apikal
with exsudat, which is soluble in 5% KOH solution.
- Clamps:
- All primary septa with one clamp each.
- Hyphae:
- Hyphal system monomitic. Subhymenial hyphae 2.5-3 µm in diameter, thin-
walled , particularly totally encrusted with crystals. Basal hyphae 2-3 µm in
diameter, slightly thick-walled, hyphae loosely running. Hyphal branching by
subseptal outgrowingor by outgrowing of clamps.
- Aculei:
- Densely connected, capitate cystidia forming the aculei.
Habitate and substrate:
Dead parts of Dryopteris and Woodwardia.
Other substrats: Cryptomeria, Erica, Olearia, Griselina.
Biogeography:
All known specimens are from subtropical or tropical areas.
Remarks:
H. griselinae with verruccose spores in combination has typical
features of the genus Hyphodontia (capitate cystidia, suburniform
basidia, hyphodontioid hyphal branching). For
this species Liberta & Navas (1978) described the genus Rogersella with the species R. asperula and
and delimited it against Hypho-derma, Trechispora and Hypochnicium .
Cunningham nevertheless described this species doubtless in 1963
as Corticium griselinae. This older name has to be used in
priority.
H. griselinae is very close to H. sambuci and H. fimbriata . The
fruit bodies of these three species are very strong incrusted with
crystals. Because of this, the basidiocarp is like a chalky white surface on the substrate. From H. sambuci a aerophytical
growth on branches or bushes is well known. The strong incrustion
could be seen as a adaption to dry weather conditions. Unfortunately there
aerophytical growth is not known of H. fimbriata and H. griselinae.
Dolipores with continuous parenthesomes, hyphodontioid hyphae, and the
characteristic droplet in the spores, let no doubt on the position of H. griselinae within
the genus Hyphodontia.
The ornaments of the spores is a leading character of some taxa
(Ganoderma: double spores wall with spinulose endospores; Thelephoraceae:
Spores with double warts; Russula: amyloid spore ornamentic). On the other hand the genera Botryobasidium, Hyphodontia, Phlebiella, Trechispora or
Tulasnella have as well species with smooth and ornamented spores within
one genus. This appearently inconsistency in the importance of the feature
"ornamented spores" depends
on the different spectrum of characters of the respective taxa. Is it possible to detect an other leading character within a genus it is very well founded that species with ornamented and smooth spores are in the same genus like in Hyphodontia or Tulasnella.
Herbarium specimens:
Spain, Canary Islands, La Gomera, Cabezo Alto, 5 km sout east of
Hermigua, in a decidous forest, on Woodwardia radicans, leg. L. Ryvarden,
16.01.1974, LR 12552, Herbarien ISU, O.
Spain, Canary Islands, Teneriffa, Pijaral Anaga, on Dryopteris sp.,
leg. L. Ryvarden, 18.02.1989, LR 26518, Herbarium O.
Spain, Canary Islands, Teneriffa, Pijaral Anaga, on Woodwardia sp.,
leg. L. Ryvarden, 18.02.1989, LR 26497, Herbarium O.
Spain, Canary Islands, Teneriffa, Relajos, Baranco de la Caldera, on
Erica arborea, leg. F. Beltrain et al., 29.11.1987, TFC MIC 5919,
Herbarium O.
La Réunion, Cilaos VII, under the crossing Roche merveilleuse - route de
Bras Sec", 1370-1400 m alt., on Cryptomeria japonica, leg. J. Boidin,
14.04.1985, LY 11103, Herbarium LY.
Go to:
Dr. Ewald Langer - 22. Aug. 1995
gelanger@mailserv.zdv.uni-tuebingen.de