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Exobasidium pentachondrae McNabb 1962

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This is indigenous
Threat status: Data deficient
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Exobasidium pentachondrae McNabb, Transactions of the Royal Society of New Zealand 1 262 (1962)
Exobasidium pentachondrae McNabb 1962

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Endemic
Present
New Zealand
Political Region

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McNabb
McNabb
1962
262
ICN
Exobasidium pentachondrae McNabb 1962
NZ holotype
species
Exobasidium pentachondrae
Host . Pentachondria pumila, [New Zealand], Otago, Fiordland, Secretary Island, February 1960, R.F.R.Mc., Type Collection PDD 19669, isotype 142526, BPI 291595, K(M) 137037

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pentachondrae

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Exobasidium pentachondrae McNabb 1962

Type: Foliicolous Fungi; Description: Hymenium on the underside of deformed leaves; white, forming a con-tinuous layer. Basidiospores cylindrical, 13–19 × 2–4 μm, smooth, hyaline; germ-inating spores 4-septate. Conidia none.
Distribution: Taupo, Fiordland.; 1st Record: McNabb (1962b).
Significance: Causes hypertrophy in leaves and shoots. It is of no significance.; Host(s): Pentachondra pumila.

Exobasidium pentachondrae McNabb 1962

HOST. Pentachondra pumila (J. R. & G. Forst.) R. Br. Otago, Fiordland, Secretary Island, February 1960, R.F.R.Mc, Type Collection P.D.D.Herb. No. 19669.
Systemic in shoots, causing hypertrophy in infected leaves and shoots; hymenium hypophyllous, white, basidia at first protruding between epidermal cells in fascicles of 3-6, forming a continuous layer over undersurface of leaf at maturity, subclavate, projecting 25-35 µ, beyond cuticle, 4.0-5.0 µ. wide; sterigmata 2, conical, 2.5-3.5 µ. long; basidiospores hyaline, smooth, cylindrical, slightly hooked at base, 13.0-19.0 x 2.5-3.5 µ, average 15.5 x 3.0 µ, germinating spores 0-(4)-septate; conidia absent.
New Zealand.
Systemicum in surculis, efficiens hypertrophiam in frondibus et stirpibus infectis, hymenio albo, plerumque hypophyllio; basidia subclavata, 3-6-nario disposita, 25-35/i ultra cuticulam eminentia, 4.0-5.Ofi lata; sterigmata 2, conica, 2.5-3.5/i longa; basidiosporae hyalinae, leves, cylindricae, tenuiter hamatae ad basim, 13.0-19.0 (15.5) x 2.5-3.5 (3.0)/i sporae germinantes 0-(4)?septatae; conidia absentia.

The host is an indigenous species occurring in the mountains of both islands and extending to Australia and Tasmania (Allan 1961, p. 514). Infection by Exobasidium pentachondrae causes shoots to become hypertrophied, elongated, and red-violet in colour.

E. pentachondrae is characterised by narrow, bisterigmate basidia and narrow cylindrical spores.

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Exobasidium pentachondrae McNabb 1962
Exobasidium pentachondrae McNabb (1962)
Exobasidium pentachondrae McNabb 1962
Exobasidium pentachondrae McNabb (1962)
Exobasidium pentachondrae McNabb 1962
Exobasidium pentachondrae McNabb (1962)
Exobasidium pentachondrae McNabb 1962
Exobasidium pentachondrae McNabb (1962)
Exobasidium pentachondrae McNabb 1962
Exobasidium pentachondrae McNabb (1962)
Exobasidium pentachondrae McNabb 1962
Exobasidium pentachondrae McNabb (1962)

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Exobasidium pentachondrae McNabb 1962
[Not available]

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typification
Host . Pentachondria pumila, [New Zealand], Otago, Fiordland, Secretary Island, February 1960, R.F.R.Mc., Type Collection PDD 19669, isotype 142526, BPI 291595, K(M) 137037

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1cb18a36-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
15 December 2003
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