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Boletus semigastroideus M. Nuhn, Manfr. Binder, A.F.S. Taylor, Halling & Hibbett 2013

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Boletus semigastroideus M. Nuhn, Manfr. Binder, A.F.S. Taylor, Halling & Hibbett, Fungal Biology 117 493 (2013)
Boletus semigastroideus M. Nuhn, Manfr. Binder, A.F.S. Taylor, Halling & Hibbett 2013

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Endemic
Present
New Zealand
Political Region

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M. Nuhn, Manfr. Binder, A.F.S. Taylor, Halling & Hibbett
M. Nuhn, Manfr. Binder, A.F.S. Taylor, Halling & Hibbett
Nuhn, M.E.; Binder, M.; Taylor, A.F.S.; Halling, R.E.; Hibbett, D.S. 2013: Phylogenetic overview of the Boletineae. Fungal Biology 117(7-8): 479-511.
2013
493
replacement, replacement name
non Boletus areolatus Berk. 1852
ICN
Boletus semigastroideus M. Nuhn, Manfr. Binder, A.F.S. Taylor, Halling & Hibbett 2013
Secotium areolatum G. Cunn. 1942
species
Boletus semigastroideus

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Fungi
Basidiomycota
Agaricomycetes
Boletales
Boletaceae
Boletus
semigastroideus

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Cunningham, G.H. 1942: Two additional New Zealand Gasteromycetes. New Zealand Journal of Science and Technology, Series B:General Section 23: 172-173.

Secotium areolatum G. Cunn. 1942

Peridium depressed globose or sub-turbinate, to 3 cm. tall, 4 cm: diameter, apex bluntly rounded, base abruptly truncated, slightly excavated ; exterior at first white, in dried plants ochraceous, smooth, slightly viscid, irregularly areolate, base finely pubescent and somewhat papillate ; composed of two layers, the outer about 100 µ thick, composed of septate hyphae partly gelatinized and arranged in a vertical palisade absent from the truncate base, the inner of hyaline pseudoparenchyma to 800 µ thick, firm and compact. Stem at first white, becoming greyish or ochraceous, to 2 cm. long, 1 cm. thick, tapering, smooth, dull, hollow, attenuated abruptly at the glebal margin to a narrowly cylindrical columella 2-3 mm. thick and white. Gleba closely oppressed to the columella, ferruginous, cells lenticular, to 1 mm. long; tramal plates 30-60 µ thick, pseudoparenchymatous ; basidia 4-spored. Spores ovate-elliptical or ovate-fusiform, 10-16 x 6-8 µ (occasionally attaining a length of 20 µ), irregular in size and shape, bluntly acuminate or rounded, base bluntly pointed, apiculate, epispore pallid ferruginous, smooth, 1 µ thick.
Peridium depressum globosum vel sub-turbinatum, ad 3 cm. altum, 4 cm. diam., spice habatatum rotundatum, basi truncatum, superficie album, siccitate ochraeeum, leve, irregulariter areolatum, hyphis 2-lamellatia. Hyphae lamellae eateriorae palum densum formantes, interiorse hyaline pseudoparenchymatae. Caulis albus, siccitate griseus, apicem versus regulariter angustatus, levis, cavus. Gleba cellularis, ferrugineus, cellulis ad 1 mm. longis, lenticulatus ; laminis tramarum pseudoparenchymatis. Sporae ovato-ellipticae vel ovato-fusiformes, 10-16 x 6-8 µ, episporium pallide ferrugineum, levae 1 µ crassum.
The species is separated from S. viresens and S. erythrocephalum principally by the peculiar structure, areolated appearance, and different colour of the peridium. It is composed of two layers, the outer being so constructed of hyphae arranged in a palisade that it ruptures readily, exposing the tough pseudoparenchymatous inner layer and giving to plants their areolated appearance. Spores resemble those of S. erythrocephalum in shape.
Distribution : Auckland, Swanson, Miss J. Dingley, type collection.
Horak, E. 1971: Contributions to the knowledge of the Agaricales s.l. (Fungi) of New Zealand. New Zealand Journal of Botany 9(3): 463-493.

Notholepiota areolata (G. Cunn.) E. Horak 1971

 HOLOTYPE: PDD 4595: "On ground; Swanson, Auckland, N.Z.: leg. J. M. Dingley, IV. 1943". — PDD 24935: "On ground under Leptospermum scoparium; Huia, Auckland, N.Z.', leg. R. F. R. McNabb, 19.1.1966".
Only very few remarks can be added to the detailed original description of Secotium areolatum. The spores measure about 13-18 x 7-8.5 µm. are strongly dextrinoid, smooth, thick-walled (ca. I u. diam.) and lack a germ pore. Basidia and cystidia were not observed
This new secotioid genus is characterised by the form of the fruiting bodies, the thick-walled, dextrinoid spores (without a germ pore), and the hymeniform cuticle. These characters put the genus close to Lepiota s.l., but it has nothing in common with Brauniella Rick ex Singer 1955 another related secotiaceous genus known from South America.

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Boletus semigastroideus M. Nuhn, Manfr. Binder, A.F.S. Taylor, Halling & Hibbett 2013
Boletus semigastroideus M. Nuhn, Manfr. Binder, A.F.S. Taylor, Halling & Hibbett 2013
Nuhn, M.E.; Binder, M. et al. (2013)
Notholepiota areolata (G. Cunn.) E. Horak 1971
Notholepiota areolata (G. Cunn.) E. Horak 1971
Anon.
Notholepiota areolata (G. Cunn.) E. Horak 1971
Notholepiota areolata (G. Cunn.) E. Horak (1971)
Castellano, M.A.; Trappe, J.M. (1990)
Notholepiota areolata (G. Cunn.) E. Horak 1971
Notholepiota areolata (G. Cunn.) E. Horak (1971)
Dingley, J.M. (1978)
Notholepiota areolata (G. Cunn.) E. Horak 1971
Notholepiota areolata (G. Cunn.) E. Horak (1971)
Horak, E. (1971)
Notholepiota areolata (G. Cunn.) E. Horak 1971
Notholepiota areolata (G. Cunn.) E. Horak 1971
Nuhn, M.E.; Binder, M. et al. (2013)
Boletus semigastroideus M. Nuhn, Manfr. Binder, A.F.S. Taylor, Halling & Hibbett 2013
Notholepiota areolata (G. Cunn.) E. Horak 1971
Notholepiota areolata (G. Cunn.) E. Horak (1971)
Pennycook, S.R. (2004)
Notholepiota areolata (G. Cunn.) E. Horak 1971
Notholepiota areolata (G. Cunn.) E. Horak (1971)
Pennycook, S.R.; Galloway, D.J. (2004)
Notholepiota areolata (G. Cunn.) E. Horak 1971
Notholepiota areolata (G. Cunn.) E. Horak (1971)
Ridley, G.S. (1996)
Notholepiota areolata (G. Cunn.) E. Horak 1971
Ridley, G.S. (2004)
Notholepiota areolata (G. Cunn.) E. Horak 1971
Notholepiota areolata (G. Cunn.) E. Horak (1971)
Ridley, G.S.; Johnston, P.R. (1997)
Notholepiota areolata (G. Cunn.) E. Horak 1971
Notholepiota areolata (G. Cunn.) E. Horak (1971)
Segedin, B.P.; Pennycook, S.R. (2001)
Notholepiota areolata (G. Cunn.) E. Horak 1971
Notholepiota areolata (G. Cunn.) E. Horak 1971
Notholepiota areolata (G. Cunn.) E. Horak (1971)
Taylor, G.M. (1981)
Notholepiota areolata (G. Cunn.) E. Horak 1971
Notholepiota areolata (G. Cunn.) E. Horak (1971)
Vellinga, E.C. (2004)
Secotium areolatum G. Cunn. 1942
Secotium areolatum G. Cunn. (1942)
Castellano, M.A.; Trappe, J.M. (1990)
Secotium areolatum G. Cunn. 1942
Secotium areolatum G. Cunn. (1942)
Cunningham, G.H. (1942)
Secotium areolatum G. Cunn. 1942
Secotium areolatum G. Cunn. (1942)
Cunningham, G.H. (1944)
Secotium areolatum G. Cunn. 1942
Secotium areolatum G. Cunn. 1942
Nuhn, M.E.; Binder, M. et al. (2013)
Boletus semigastroideus M. Nuhn, Manfr. Binder, A.F.S. Taylor, Halling & Hibbett 2013
Secotium areolatum G. Cunn. 1942
Secotium areolatum G. Cunn. (1942)
Segedin, B.P.; Pennycook, S.R. (2001)
Notholepiota areolata (G. Cunn.) E. Horak 1971

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Boletus semigastroideus M. Nuhn, Manfr. Binder, A.F.S. Taylor, Halling & Hibbett 2013
New Zealand
Auckland
3 Link to an external page
Boletus semigastroideus M. Nuhn, Manfr. Binder, A.F.S. Taylor, Halling & Hibbett 2013
New Zealand
Coromandel
2 Link to an external page
Boletus semigastroideus M. Nuhn, Manfr. Binder, A.F.S. Taylor, Halling & Hibbett 2013
New Zealand
Nelson
3 Link to an external page
Boletus semigastroideus M. Nuhn, Manfr. Binder, A.F.S. Taylor, Halling & Hibbett 2013
New Zealand
North Canterbury
1 Link to an external page
Boletus semigastroideus M. Nuhn, Manfr. Binder, A.F.S. Taylor, Halling & Hibbett 2013
New Zealand
Northland
1 Link to an external page
Boletus semigastroideus M. Nuhn, Manfr. Binder, A.F.S. Taylor, Halling & Hibbett 2013
New Zealand
Waikato
1 Link to an external page
Boletus semigastroideus M. Nuhn, Manfr. Binder, A.F.S. Taylor, Halling & Hibbett 2013
New Zealand
Wairarapa
1 Link to an external page
Notholepiota areolata (G. Cunn.) E. Horak 1971
New Zealand
Auckland
44 Link to an external page
Notholepiota areolata (G. Cunn.) E. Horak 1971
New Zealand
Coromandel
2 Link to an external page
Secotium areolatum G. Cunn. 1942
New Zealand
Auckland
4 Link to an external page

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712287d3-b7d5-42dd-a05e-2bd4f0235288
scientific name
Names_Fungi
25 October 2013
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