Phyllactinia guttata s. lat. (Wallr.) Lév.
(Hazel Mildew, Hazelnut Powdery Mildew)

Interactions where Phyllactinia guttata s. lat. is the dominant partner and gains from the process

The following relationships have been collated from the published literature (see 'Interaction References').

Stage		Summary			Taxon	Vernacular	Classification	References	Darwin Classification of Active Taxon	Active Taxon	Active Vernacular	Active Taxon Uncertain	Active State	Active Part	Active Stage	Relationship	Relationship Uncertain	Relationship Geography	Darwin Classification of Passive Taxon	Passive Taxon	Passive Vernacular	Passive Taxon Uncertain	Passive State	Passive Part	Passive Stage	Passive Taxon's significance to Active Taxon	Indoors etc	Season
(hypophyllous)		hypophyllous parasitises live leaf			Hedera helix	Ivy	Apiales: Araliaceae	An Introduction to British Powdery Mildews, Ing, B., 1990 Teaching Techniques for Mycology: 13. Functioning of cleistothecia in Phyllactinia guttata, Weber, R.W.S. & Webster, J., 2001	/Fungi/Ascomycota/Leotiomycetes/Erysiphales/Erysiphaceae/Phyllactinia guttata s. lat./	Phyllactinia guttata s. lat.	hazel mildew, hazelnut powdery mildew		hypophyllous			Foodplant / parasite		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Apiales/Araliaceae/Hedera helix/	Hedera helix	ivy		live	leaf
(hypophyllous)		hypophyllous parasitises live leaf			Ilex aquifolium	Holly	Aquifoliales: Aquifoliaceae	Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997 An Introduction to British Powdery Mildews, Ing, B., 1990 Teaching Techniques for Mycology: 13. Functioning of cleistothecia in Phyllactinia guttata, Weber, R.W.S. & Webster, J., 2001	/Fungi/Ascomycota/Leotiomycetes/Erysiphales/Erysiphaceae/Phyllactinia guttata s. lat./	Phyllactinia guttata s. lat.	hazel mildew, hazelnut powdery mildew		hypophyllous			Foodplant / parasite		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Aquifoliales/Aquifoliaceae/Ilex aquifolium/	Ilex aquifolium	holly		live	leaf
(hypophyllous)		hypophyllous parasitises live leaf			Buxus sempervirens	Box	Buxales: Buxaceae	An Introduction to British Powdery Mildews, Ing, B., 1990	/Fungi/Ascomycota/Leotiomycetes/Erysiphales/Erysiphaceae/Phyllactinia guttata s. lat./	Phyllactinia guttata s. lat.	hazel mildew, hazelnut powdery mildew		hypophyllous			Foodplant / parasite		Foreign	/Plantae/Tracheophyta/Magnoliopsida/Buxales/Buxaceae/Buxus sempervirens/	Buxus sempervirens	box		live	leaf
cleistothecium (hypophyllous)		hypophyllous cleistothecium may be found on fading leaf of especially on new growth following cutting the previous year			Corylus	hazels	Fagales: Betulaceae	Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997	/Fungi/Ascomycota/Leotiomycetes/Erysiphales/Erysiphaceae/Phyllactinia guttata s. lat./	Phyllactinia guttata s. lat.	hazel mildew, hazelnut powdery mildew		hypophyllous		cleistothecium	Plant / resting place / on			/Plantae/Tracheophyta/Magnoliopsida/Fagales/Betulaceae/Corylus/	Corylus	hazels		fading	leaf	especially on new growth following cutting the previous year	Major		(10-12)
cleistothecium (hypophyllous)		hypophyllous cleistothecium may be found on dead leaf of especially on new growth following cutting the previous year			Corylus	hazels	Fagales: Betulaceae	Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997	/Fungi/Ascomycota/Leotiomycetes/Erysiphales/Erysiphaceae/Phyllactinia guttata s. lat./	Phyllactinia guttata s. lat.	hazel mildew, hazelnut powdery mildew		hypophyllous		cleistothecium	Plant / resting place / on			/Plantae/Tracheophyta/Magnoliopsida/Fagales/Betulaceae/Corylus/	Corylus	hazels		dead	leaf	especially on new growth following cutting the previous year	Major		(10-12)
Ovulariopsis anamorph (hypophyllous, poorly developed)		hypophyllous, poorly developed Ovulariopsis anamorph parasitises live leaf of especially on new growth following cutting the previous year			Corylus	hazels	Fagales: Betulaceae	Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997	/Fungi/Ascomycota/Leotiomycetes/Erysiphales/Erysiphaceae/Phyllactinia guttata s. lat./	Phyllactinia guttata s. lat.	hazel mildew, hazelnut powdery mildew		hypophyllous, poorly developed		Ovulariopsis anamorph	Foodplant / parasite			/Plantae/Tracheophyta/Magnoliopsida/Fagales/Betulaceae/Corylus/	Corylus	hazels		live	leaf	especially on new growth following cutting the previous year	Major
(hypophyllous)		hypophyllous parasitises live leaf			Corylus avellana	Hazel	Fagales: Betulaceae	Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998 An Introduction to British Powdery Mildews, Ing, B., 1990	/Fungi/Ascomycota/Leotiomycetes/Erysiphales/Erysiphaceae/Phyllactinia guttata s. lat./	Phyllactinia guttata s. lat.	hazel mildew, hazelnut powdery mildew		hypophyllous			Foodplant / parasite		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Fagales/Betulaceae/Corylus avellana/	Corylus avellana	hazel		live	leaf
(hypophyllous)		hypophyllous parasitises live flower			Corylus avellana	Hazel	Fagales: Betulaceae	Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998 An Introduction to British Powdery Mildews, Ing, B., 1990	/Fungi/Ascomycota/Leotiomycetes/Erysiphales/Erysiphaceae/Phyllactinia guttata s. lat./	Phyllactinia guttata s. lat.	hazel mildew, hazelnut powdery mildew		hypophyllous			Foodplant / parasite		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Fagales/Betulaceae/Corylus avellana/	Corylus avellana	hazel		live	flower
(hypophyllous)		hypophyllous parasitises live leaf			Corylus maxima	Filbert	Fagales: Betulaceae	An Introduction to British Powdery Mildews, Ing, B., 1990	/Fungi/Ascomycota/Leotiomycetes/Erysiphales/Erysiphaceae/Phyllactinia guttata s. lat./	Phyllactinia guttata s. lat.	hazel mildew, hazelnut powdery mildew		hypophyllous			Foodplant / parasite		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Fagales/Betulaceae/Corylus maxima/	Corylus maxima	filbert		live	leaf
(hypophyllous)		hypophyllous parasitises live leaf			Callistemon phoeniceus	a garden plant	Myrtales: Myrtaceae	An Introduction to British Powdery Mildews, Ing, B., 1990	/Fungi/Ascomycota/Leotiomycetes/Erysiphales/Erysiphaceae/Phyllactinia guttata s. lat./	Phyllactinia guttata s. lat.	hazel mildew, hazelnut powdery mildew		hypophyllous			Foodplant / parasite		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Myrtales/Myrtaceae/Callistemon phoeniceus/	Callistemon phoeniceus	a garden plant		live	leaf
(hypophyllous)		hypophyllous parasitises live leaf			Morus nigra	Black Mulberry	Rosales: Moraceae	Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998	/Fungi/Ascomycota/Leotiomycetes/Erysiphales/Erysiphaceae/Phyllactinia guttata s. lat./	Phyllactinia guttata s. lat.	hazel mildew, hazelnut powdery mildew		hypophyllous			Foodplant / parasite		Foreign	/Plantae/Tracheophyta/Magnoliopsida/Rosales/Moraceae/Morus nigra/	Morus nigra	black mulberry		live	leaf
cleistothecium (hypophyllous)		hypophyllous cleistothecium parasitises live leaf			Aesculus	horse chestnuts	Sapindales: Sapindaceae	The Horse Chestnut powdery mildew Uncinula flexuosa in Europe (New British Record 210), Ing, B. & Spooner, B., 2002 Teaching Techniques for Mycology: 13. Functioning of cleistothecia in Phyllactinia guttata, Weber, R.W.S. & Webster, J., 2001	/Fungi/Ascomycota/Leotiomycetes/Erysiphales/Erysiphaceae/Phyllactinia guttata s. lat./	Phyllactinia guttata s. lat.	hazel mildew, hazelnut powdery mildew		hypophyllous		cleistothecium	Foodplant / parasite		Foreign	/Plantae/Tracheophyta/Magnoliopsida/Sapindales/Sapindaceae/Aesculus/	Aesculus	horse chestnuts		live	leaf
conidial anamorph (hypophyllous)		hypophyllous conidial anamorph parasitises live leaf			Aesculus	horse chestnuts	Sapindales: Sapindaceae	The Horse Chestnut powdery mildew Uncinula flexuosa in Europe (New British Record 210), Ing, B. & Spooner, B., 2002 Teaching Techniques for Mycology: 13. Functioning of cleistothecia in Phyllactinia guttata, Weber, R.W.S. & Webster, J., 2001	/Fungi/Ascomycota/Leotiomycetes/Erysiphales/Erysiphaceae/Phyllactinia guttata s. lat./	Phyllactinia guttata s. lat.	hazel mildew, hazelnut powdery mildew		hypophyllous		conidial anamorph	Foodplant / parasite		Foreign	/Plantae/Tracheophyta/Magnoliopsida/Sapindales/Sapindaceae/Aesculus/	Aesculus	horse chestnuts		live	leaf
cleistothecium (hypophyllous)		hypophyllous cleistothecium parasitises live leaf			Aesculus hippocastanum	Horse Chestnut, Horse-chestnut	Sapindales: Sapindaceae	Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997 The Horse Chestnut powdery mildew Uncinula flexuosa in Europe (New British Record 210), Ing, B. & Spooner, B., 2002 An Introduction to British Powdery Mildews, Ing, B., 1990	/Fungi/Ascomycota/Leotiomycetes/Erysiphales/Erysiphaceae/Phyllactinia guttata s. lat./	Phyllactinia guttata s. lat.	hazel mildew, hazelnut powdery mildew		hypophyllous		cleistothecium	Foodplant / parasite		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Sapindales/Sapindaceae/Aesculus hippocastanum/	Aesculus hippocastanum	horse chestnut, horse-chestnut		live	leaf		Minor
conidial anamorph (hypophyllous)		hypophyllous conidial anamorph parasitises live leaf			Aesculus hippocastanum	Horse Chestnut, Horse-chestnut	Sapindales: Sapindaceae	Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997 The Horse Chestnut powdery mildew Uncinula flexuosa in Europe (New British Record 210), Ing, B. & Spooner, B., 2002 An Introduction to British Powdery Mildews, Ing, B., 1990	/Fungi/Ascomycota/Leotiomycetes/Erysiphales/Erysiphaceae/Phyllactinia guttata s. lat./	Phyllactinia guttata s. lat.	hazel mildew, hazelnut powdery mildew		hypophyllous		conidial anamorph	Foodplant / parasite		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Sapindales/Sapindaceae/Aesculus hippocastanum/	Aesculus hippocastanum	horse chestnut, horse-chestnut		live	leaf		Minor

Author & Year	Title	Source
Buczacki, S. & Harris, K., 1998	Pests, Diseases & Disorders of Garden Plants	Collins Photoguide, 2nd edition edition, Collins
Ellis, M.B. & J.P., 1997	Microfungi on Land Plants: An Identification Handbook	2nd (New Enlarged) edition, 868pp, The Richmond Publishing Co. Ltd
Ing, B. & Spooner, B., 2002	The Horse Chestnut powdery mildew Uncinula flexuosa in Europe (New British Record 210)	Mycologist Vol 16 (3): 112-113.
Ing, B., 1990	An Introduction to British Powdery Mildews	Mycologist Vol 4 (1) et seq.
Weber, R.W.S. & Webster, J., 2001	Teaching Techniques for Mycology: 13. Functioning of cleistothecia in Phyllactinia guttata	Mycologist Vol 15 (1): 26-30.

Phyllactinia guttata s. lat. (Hazel Mildew, Hazelnut Powdery Mildew) may also be included in 'feeds on' relations listed under the following higher taxa:

FUNGI
(true fungi)

Phyllactinia guttata s. lat. (Hazel Mildew, Hazelnut Powdery Mildew) may be included in 'fed on by' relations listed under the following higher taxa:

ERYSIPHACEAE
(powdery mildews)

FUNGI
(true fungi)

Fungi s.l.
(fungi (in the broad sense))

Taxonomic hierarchy:

Species	Phyllactinia guttata s. lat. (Hazel Mildew, Hazelnut Powdery Mildew)
Genus	Phyllactinia (a genus of powdery mildews)
Family	ERYSIPHACEAE (powdery mildews)
Order	ERYSIPHALES (powdery mildews)
Subclass	LEOTIOMYCETIDAE (powdery mildews)
Class	LEOTIOMYCETES (a class of fungi)
Subphylum	PEZIZOMYCOTINA (a subphylum of ascomycetes)
Phylum	ASCOMYCOTA (spore shooters, ascomycete)
Kingdom	FUNGI (true fungi)
Domain	Eukaryota (eukaryotes)
Life	BIOTA (living things)

Phyllactinia guttata s. lat. is also a member of:
Micromycetes - microfungi (via Ascomycota)
Fungi s.l. - fungi (in the broad sense) (via Fungi)
Lower Plants - lower plants (via Fungi s.l.)

NBN

NBN (data.nbn.org.uk) has a distribution map for Phyllactinia guttata s. lat. (Hazel Mildew, Hazelnut Powdery Mildew)

Identification Works

Handling & Magnification	Author	Year	Title	Source
	Ing, B. & Spooner, B.	2002	The Horse Chestnut powdery mildew Uncinula flexuosa in Europe (New British Record 210)	Mycologist Vol 16 (3): 112-113.
	Weber, R.W.S. & Webster, J.	2001	Teaching Techniques for Mycology: 13. Functioning of cleistothecia in Phyllactinia guttata	Mycologist Vol 15 (1): 26-30.

Phyllactinia guttata s. lat. (Hazel Mildew, Hazelnut Powdery Mildew) may also be included in identification literature listed under the following higher taxa:

ERYSIPHALES
(powdery mildews)

LEOTIOMYCETIDAE
(powdery mildews)

ASCOMYCOTA
(spore shooters, ascomycete)

FUNGI
(true fungi)

Eukaryota
(eukaryotes)

BIOTA
(living things)

Fungi s.l.
(fungi (in the broad sense))

Literature listed under the following higher taxa may be relevant to Phyllactinia guttata s. lat. (Hazel Mildew, Hazelnut Powdery Mildew):

ERYSIPHACEAE
(powdery mildews)

ERYSIPHALES
(powdery mildews)

LEOTIOMYCETIDAE
(powdery mildews)

ASCOMYCOTA
(spore shooters, ascomycete)

FUNGI
(true fungi)

Eukaryota
(eukaryotes)

BIOTA
(living things)

Fungi s.l.
(fungi (in the broad sense))

BioImages

BioImages (www.bioimages.org.uk) has 31 images of Phyllactinia guttata s. lat. (Hazel Mildew, Hazelnut Powdery Mildew)

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