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Nectria polythalama Berk. 1855

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Endemic
Present
New Zealand
Political Region

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Berk.
Berk.
1855
203
ICN
Nectria polythalama Berk. 1855
NZ holotype
species
Nectria polythalama
epitype CBS 129240, North Island,Warkworth, Terzaghi Farm, A.Rossman, P.Chaverri, 9 Mar.2009, on Conynocarpus laevigatus

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polythalama

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Nectria polythalama Berk. 1855

Caespitose, dull scarlet. Perithecia ovate, umbilicate at the apex, or depressed, the depression being darker than the rest of the surface, which is of a dull scarlet, inclining sometimes to orange. Sporidia about 1/1000 of an inch long, but very variable, oblong, multiseptate. Resembling N. cucurbitula, but with very different fruit. I have not seen perfect asci.
caespitosa, peritheciis ovatis subglobosisve apice umbilicatis depressisve coccineis, umbilico obscuro, sporidiis multiseptatis.
On dead bark. Bay of Islands, J.D.H.
Perithecia caespitosa, erumpens, coccineo-rubra, demum nigrescens, globoso-depressa. Ascis clavato-cylindricis. Sporidiis ellipticis, multiseptatis, merenchymatis, hyalinis (0.03-0.04 x 0.012-0.015 mm.). Conidiis stilboideis, clavatis, vel subrotundis, pallidis; stipite obscuriore, sporis ellipsoideis, hyalinis (0.006 x 0.003 mm.).
Sporidia resembling those of Sph. pseudotrichia, Schw., but perithecia caespitose, and turning blackish.
On bark. (No. 53.)

Nectria polythalama Berk. 1855

Seifert (1985) synonymised N. polythalama under the older epithet of N. pseudotrichia. Although somewhat similar especially in having muriform ascospores, N. polythalama is distinct from N. pseudotrichia. The lectotype specimen of N. polythalma has smooth ascospores unlike the spinulose ascospores of N. pseudotrichia (Fig. 59A–R, Fig. 60A–F). Characteristics of the asexual state are also useful in distinguishing these species. In the natural environment, the anamorph of N. polythalama produces dark purple conidial masses at the synnematal apex and the conidia of N. polythalama are larger than those of N. pseudotrichia (Fig. 59A–R, Fig. 60A–F). In culture, conidia of N. polythalama are swollen at both ends unlike those of N. pseudotrhicia. The optimum temperate for growth of N. polythalama on PDA is 25 °C while that for N. pseudotrichia is between 25 to 30 °C or 30 °C. Based on our phylogenetic analysis N. polythalama is clearly distinct from N. pseudotrichia with each species forming highly supported branches (Hirooka et al. 2010) (Fig. 1, Fig. 3).

Our phylogenetic results based on a multiple-locus analysis of 65 isolates from throughout the world support the monophyly of N. pseudotrichia with a second distinct clade from New Zealand. The New Zealand strains are herein recognised as Nectria polythalama, a name previously considered a synonym of N. pseudotrichia. Within Nectria pseudotrichia, six subclades exist that are strongly correlated with geography but these cannot be distinguished morphologically (Hirooka et al. 2010).

Nectria polythalama Berk. 1855

[Notes from Kew Type specimen, PRJ 2010] two sheets within the type folder, one inside a packet labelled syntype, the other not in a separate packet. The material in the packet has more fruiting bodies.

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Calonectria polythalama (Berk.) Sacc. 1878
Nectria polythalama Berk. 1855
Megalonectria nigrescens (Kalchbr. & Cooke) Sacc.
Nectria polythalama Berk. 1855
Megalonectria nigrescens (Kalchbr. & Cooke) Sacc. (1883)
Nectria polythalama Berk. 1855
Nectria polythalama Berk. (1855)
Nectria polythalama Berk. 1855
Nectria polythalama Berk. (1855)
Nectria polythalama Berk. 1855
Nectria polythalama Berk. 1855
Nectria polythalama Berk. 1855
Nectria polythalama Berk. 1855
Nectria polythalama Berk. 1855
Nectria polythalama Berk. 1855
Nectria polythalama Berk. 1855
Sphaerostilbe nigrescens Kalchbr. & Cooke 1880
Nectria polythalama Berk. 1855

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Nectria polythalama Berk. 1855
New Zealand
Auckland

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typification
epitype CBS 129240, North Island,Warkworth, Terzaghi Farm, A.Rossman, P.Chaverri, 9 Mar.2009, on Conynocarpus laevigatus

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1cb1b509-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
1 January 2001
27 March 2012
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