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Pseudophaeophleospora atkinsonii (Syd.) U. Braun, C. Nakash., Videira & Crous 2017

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Pseudophaeophleospora atkinsonii (Syd.) U. Braun, C. Nakash., Videira & Crous in Videira et al., Studies in Mycology 87 311 (2017)
Pseudophaeophleospora atkinsonii (Syd.) U. Braun, C. Nakash., Videira & Crous 2017

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Indigenous, non-endemic
Present
New Zealand
Political Region

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(Syd.) U. Braun, C. Nakash., Videira & Crous
Syd.
U. Braun, C. Nakash., Videira & Crous
2017
311
ICN
species
Pseudophaeophleospora atkinsonii

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atkinsonii

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"As shown in the present study, Phaeophleospora atkinsonii, a pathogen of Hebe spp. (Wu et al. 1996, Pennycook & McKenzie 2002), clusters distant from Phaeophleospora s. str., .... [This species] thus clearly represent[s] yet another [genus] in the Phaeophleospora complex.... P. atkinsonii [has] a typical Kirramyces morphology, namely brown, percurrently proliferating conidiogenous cells, and brown, obclavate, verruculose, transversely euseptate conidia. Further species thus need to be included in analyses before these generic concepts can be clarified."
On Hebe stricta, H. elliptica, H. macrocarpa, H. carnea the leaf spot lesion is dark in colour and poorly defined, but on H. speciosa and all its horticultural varieties the lesions are light in colour and well defined. It is widely distributed throughout New Zealand but is of little economic importance.
Type: Foliicolous Fungi; Description: Conidiomata pycnidial, scattered, immersed, globose to subglobose, brown, 0.1 mm in diameter; on roughly circular, 3–12 mm in diameter, brown leaf spots without a definite margin. Conidia cylindrical to obclavate, straight or slightly curved, 3-septate, 29–42 × 2–3 m, minutely verruculose, pale yellowish brown.
Distribution: Auckland, Wanganui, Wellington.; 1st Record: Sydow (1924: as Scoleciasis atkinsonii).
Notes: This fungus, found on lesions on leaves of Hebe spp., has been repeatedly confused with Septoria exotica (see p. 80), also found on lesions on leaves of Hebe spp. See Laundon (1978b) for an account of the confusion between the two species and a description of their distinguishing characteristics.
Significance: A common leaf spot having no significance.; Host(s): Hebe elliptica, H. stricta var. stricta, H. stricta var. atkinsonii.
Maculae amphigenae, orbiculares vel suborbiculares, 2-5 mm diam., non vel vix confluentes primitus sordide ochraceo-brunneae, tandem albicantes, linea elevata superne atra inferne brunneo-atra semper distincte marginatae; pycnidia epiphylla, subepidermalia, circiter tertiam folii crassi-tudinis partem occupantia, gregaria, applanato-globosa, ca. 90-120 µ diam., sub lente atra, poro pertusa, tandem latius aperta, pariete tenui ca. 10-15 u crasso, contextu flavo-brunneolo pseudopycnidiali indistincte celluloso; sporulae cylindraceo-filiformes, rectae vel parum curvatae, utrinque obtusae, indistincte 2-4-septatae, non constrictae, pallide flavidae, in cumulo intensius coloratae, 24-40 x 3-3½ µ.
Der Pilz stellt eine ausgesprochene Übergangsform zwischen Septoria und Hendersonia dar und entspricht daher völlig der von Spegazzini für derartige Formen aufgestellten Gattung Phaeoseptoria, welche jedoch, worauf schon Hoenel (cfr. supra pag. 196) hingewiesen hat, mit Scoleciasis Fautr. et Roum. wohl identisch ist
Hab. in foliis Veronicae Atkinsoni, York Bay, Wellington, 24.10.1920, leg. E. H. Atkinson (no. 968).

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Kirramyces hebes W.P. Wu, B. Sutton & Gange
Pseudophaeophleospora atkinsonii (Syd.) U. Braun, C. Nakash., Videira & Crous 2017
Phaeophleospora atkinsonii (Syd.) Pennycook & McKenzie
Pseudophaeophleospora atkinsonii (Syd.) U. Braun, C. Nakash., Videira & Crous 2017
Pseudophaeophleospora atkinsonii (Syd.) U. Braun, C. Nakash., Videira & Crous 2017
Pseudophaeophleospora atkinsonii (Syd.) U. Braun, C. Nakash., Videira & Crous
Scoleciasis atkinsonii Syd.
Pseudophaeophleospora atkinsonii (Syd.) U. Braun, C. Nakash., Videira & Crous 2017

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Pseudophaeophleospora atkinsonii (Syd.) U. Braun, C. Nakash., Videira & Crous 2017
New Zealand
Mid Canterbury
New Zealand
Coromandel
New Zealand
Mid Canterbury
New Zealand
Otago Lakes
New Zealand
Stewart Island
New Zealand
Wellington

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taxonomic status
Septoria exotica is not a synonym. See notes with PDD 96105 https://scd.landcareresearch.co.nz/Specimen/PDD%2096105

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6f060eca-b737-4d49-9c80-79e0726d310b
scientific name
Names_Fungi
15 September 2017
10 November 2021
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