Erysiphe densa Berk. 1855
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Details
Erysiphe densa Berk. 1855
Erysiphe densa Berk. 1855
Biostatus
Nomenclature
Berk.
Berk.
1855
208
ICN
Erysiphe densa Berk. 1855
NZ
species
Erysiphe densa
Classification
Associations
has host
Descriptions
Erysiphe densa Berk. 1855
bifrons, mycelio denso arachnoideo persistente, sporangiis mediis globosis sparsis, appendiculis flexuosis candidis intertextis obovatis brevibus, sporidiis ellipticis suboctonis.
This differs from E. Martii, Lév., merely in its thick persistent mycelium, which gives it a very lichenoid appearance, especially when on the upper surface of the leaves. The appendages are flexuous, sometimes forked, and frequently bear one or two little knots towards the end, showing a tendency to ramify.
On living leaves of Aristotelia, Wairarapa, Colenso.
Erysiphe densa Berk. 1855
Type: Powdery Mildews; Description: Mycelium superficial, thin to dense, white, hyphae 4–5 μm wide; on leaves, twigs, and inflorescences. Appressoria strongly lobed. Ascomata cleistothecial, scattered to gregarious, superficial, globose to oval, dark brown, 0.1 mm in diameter, with numerous 100–300 μm long, unbranched, straight or flexuous, hyaline appendages. Asci 8–18 per ascoma, clavate, short stalked, 40–90 × 25–40 μm. Ascospores 6–8 per ascus, oval, 0-septate, 16–20 × 9–10 μm, smooth, hyaline. Conidiophores 75–110 × 8–13 μm, foot cell straight or swollen. Conidia produced singly, cylindrical, 35–45 × 16–19 μm, smooth, hyaline.
Distribution: Wairarapa, Mid Canterbury.; 1st Record: Berkeley (1855).
Significance: None.; Host(s): *Aristotelia fruticosa, *A. serrata.
Erysiphe densa Berk. 1855
[Notes from Kew Type specimen, PRJ 2010] Kew images.
Taxonomic concepts
Erysiphe densa Berk. 1855
Erysiphe densa Berk. 1855
Erysiphe densa Berk. 1855
Erysiphe densa Berk. 1855
Erysiphe densa Berk. (1855)
Global name resources
Collections
Notes
typification
HAB. On living leaves of Arisiotelia, Wairarapa, [New Zealand] Colenso K(M)
Metadata
1cb189df-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
6 May 2013