Clavaria sp. 1 R.H. Petersen 1988
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Clavaria sp. 1 R.H. Petersen 1988
Clavaria sp. 1 R.H. Petersen 1988
Nomenclature
R.H. Petersen
R.H. Petersen
1988
invalidly published
ICN
Clavaria sp. 1 R.H. Petersen 1988
species
Clavaria sp. 1
Classification
Descriptions
Clavaria sp. 1 R.H. Petersen 1988
North Island: UNP, Lake Ruapani Track, 25.v.82, coll. RHP, no. 43609 (TENN).
Fruit bodies up to 30 x 2 mm, simple clubs, scattered. Stipe up to 12 x 1.5 mm, terete, somewhat brighter in colour than club, more or less distinct from it, arising at substrate surface, but without basal mycelial mat. Club terete to somewhat longitudinally sulcate or flattened, dull light yellow ("buff-yellow"); apex broadly rounded. Taste and odour negligible.
Macro chemical reaction: FCL = negative.
Tramal hyphae of club 2.5-6 µm diam., hardly inflated, clampless, hyaline, of relatively short cells, parallel, tightly packed. Subhymenium abrupt, rudimentary. Basidia 70-85 x 8-9 µm, narrowly clavate, clampless, stiff, persistent after spore discharge; contents homogeneous to granular when mature; sterigmata 4, up to 8 µm long, curved-divergent.
Spores 6.5-7.9 x 4.7-5.8 µm (E= 1.20-1.54; Em = 1.33; Lm = 7.09 µm), ovate to broadly ovate, somewhat flattened adaxially, hyaline, thin-walled; contents uniguttulate when young and fresh; hilar appendix broad, papillate; spores collapsing when dried, reviving very slowly in 2% KOH.
Macro chemical reaction: FCL = negative.
Tramal hyphae of club 2.5-6 µm diam., hardly inflated, clampless, hyaline, of relatively short cells, parallel, tightly packed. Subhymenium abrupt, rudimentary. Basidia 70-85 x 8-9 µm, narrowly clavate, clampless, stiff, persistent after spore discharge; contents homogeneous to granular when mature; sterigmata 4, up to 8 µm long, curved-divergent.
Spores 6.5-7.9 x 4.7-5.8 µm (E= 1.20-1.54; Em = 1.33; Lm = 7.09 µm), ovate to broadly ovate, somewhat flattened adaxially, hyaline, thin-walled; contents uniguttulate when young and fresh; hilar appendix broad, papillate; spores collapsing when dried, reviving very slowly in 2% KOH.
I have seen only three fruit bodies, insufficient for proposal of a new taxon. Although the spores are typical of subgenus Clavaria, the basidia are long, narrowly clavate, and stiff, as are those in subg. Clavulinopsis or those produced by taxa of Ramariopsis subg. Laevispora (e.g., R. fuciformis or R. corniculata).
So far, one might conclude that, with yellow fruit bodies and the basidia as described, the taxon might represent a parthenogenetic fruiting of a Clavulinopsis, but the basidia are strictly tetrasporic, and parthenogenesis is unreported in subg. Clavulinopsis. Studies on nuclear behaviour in the basidia would be most interesting. Regardless of what the taxon might represent, it is obviously (and relatively well, except for the basidia) accommodated in Clavaria subg. Clavaria. There is only the slightest possibility, based on Corner's (1950: p.254) description, that this may be his C. vermicularis var. singaporensis.
So far, one might conclude that, with yellow fruit bodies and the basidia as described, the taxon might represent a parthenogenetic fruiting of a Clavulinopsis, but the basidia are strictly tetrasporic, and parthenogenesis is unreported in subg. Clavulinopsis. Studies on nuclear behaviour in the basidia would be most interesting. Regardless of what the taxon might represent, it is obviously (and relatively well, except for the basidia) accommodated in Clavaria subg. Clavaria. There is only the slightest possibility, based on Corner's (1950: p.254) description, that this may be his C. vermicularis var. singaporensis.
Taxonomic concepts
Clavaria sp. 1 R.H. Petersen 1988
Clavaria sp. 1 sensu R.H. Petersen (1988)
Clavaria sp. 1 R.H. Petersen 1988
Clavaria sp. 1 sensu R.H. Petersen (1988)
Clavaria sp. 1 R.H. Petersen 1988
Identification keys
Metadata
1cb1d34c-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
23 March 2001
10 October 2019