Gymnosporangium confusum. [Descriptions of Fungi and Bacteria].

1977 ◽  
Author(s):  
G. Laundon
Keyword(s):  
Geographical Distribution ◽  
Pyrus Communis ◽  
Japanese Quince

Abstract A description is provided for Gymnosporangium confusum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Aecia on hawthorn (Crataegus), European quince (Cydonia vulgaris), Japanese quince (Chaenomeles japonica) and medlar (Mespilus germanica); also on Cotoneaster and Sorbus, and occasionally weak infections on pear (Pyrus communis). Telia on junipers of both the 'oxycedrus' and 'sabina' groups. DISEASE: Medlar rust. Aecia chiefly on the leaves but also on stems, calyces and fruit. Telia on slight fusiform swellings of twigs and branches of juniper. GEOGRAPHICAL DISTRIBUTION: Widespread throughout Europe, extending into Asia (India, Iran, Lebanon, Pakistan, Turkey, USSR) and Africa (Algeria, Morocco, Tunisia). Also established in USA (California) (CMI Map 429, ed. 1, 1967).

Podosphaera clandestina. [Descriptions of Fungi and Bacteria].

1975 ◽  
Author(s):  
S. M. Khairi
Keyword(s):  
Host Plant ◽  
Geographical Distribution ◽  
Secondary Infection ◽  
Pyrus Communis ◽  
Crataegus Monogyna ◽  
Terminal Buds

Abstract A description is provided for Podosphaera clandestina. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Crataegus monogyna, C. pentagyna, C. punctata, Mespilus germanica, Cratoegomespilus grandiflora, C. dardari, Pyrus communis, Cydonia vulgaris, Pyrocydonia winkleri and P. danieli. DISEASE: Hawthorn mildew. Severe attacks cause defoliation and death of terminal buds on young seedlings and on soft shoots on hedges and trees. The disease has been recorded on hawthorn fruits. The host plant can be grown only from seeds. GEOGRAPHICAL DISTRIBUTION: Worldwide (Salmon, 1900; 45, 3081). Cleistothecia play no part in the disease in England. The overwintering mycelium, inside infected buds, survives until the following spring. These infected buds are the primary infections found each year. Secondary infection is by air-borne conidia.

Gymnosporangium globosum. [Distribution map].

1989 ◽  
Author(s):  
Keyword(s):  
North America ◽  
South Dakota ◽  
North Dakota ◽  
Geographical Distribution ◽  
Pyrus Communis ◽  
Malus Pumila ◽  
Distribution Map ◽  
New Distribution

Abstract A new distribution map is provided for Gymnosporangium globosum Farlow. Hosts: Apple (Malus pumila), pear (Pyrus communis), Crataegus & Juniperus). Information is given on the geographical distribution in North America, Canada, Ontario, Quebec, Saskatchewan, Mexico, USA, Colorado, North Dakota, South Dakota, Nebraska, Oklahoma, Texas, AK.

Dasineura pyri. [Distribution map].

2008 ◽  
Author(s):  
Keyword(s):  
New York ◽  
New Zealand ◽  
North America ◽  
Geographical Distribution ◽  
Pyrus Communis ◽  
Distribution Map ◽  
Central Russia ◽  
New Distribution ◽  
Distribution In Europe

Abstract A new distribution map is provided for Dasineura pyri (Bouché). Diptera: Cecidomyiidae. Hosts: Pyrus spp., particularly common pear (Pyrus communis). Information is given on the geographical distribution in Europe (Austria, Belgium, Bosnia-Hercegovina, Bulgaria, Denmark, Finland, France (Mainland France), Germany, Hungary, Italy, Lithuania, Macedonia, Montenegro, Netherlands, Norway, Poland, Romania, Russia (Central Russia), Serbia, Slovenia, Spain (Mainland Spain), Sweden, Switzerland, UK), Asia (China (Fujian)), North America (USA (Connecticut, New York, Oregon, Washington)), Oceania (New Zealand).

Gymnosporangium clavariiforme. [Descriptions of Fungi and Bacteria].

1977 ◽  
Author(s):  
G. Laundon
Keyword(s):  
New Zealand ◽  
North America ◽  
Middle East ◽  
Geographical Distribution ◽  
Pyrus Communis ◽  
Juniperus Communis ◽  
Central Usa

Abstract A description is provided for Gymnosporangium clavariiforme. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Aecia principally on hawthorn (Crataegus), also recorded on pear (Pyrus communis), quince (Cydonia vulgaris), Amelanchier, Aronia, Cotoneaster and Sorbus. Telia on Juniperus communis and other species of the 'oxycedrus' group. DISEASE: European hawthorn rust. Aecia on leaves, stems and fruit. Telia on long fusiform swellings or cankers on branches; sometimes witches' brooms present. GEOGRAPHICAL DISTRIBUTION: Throughout Europe, from Scandinavia, Britain and Spain to the Middle East in Asia. Also in India, Kamchatka, Korea and Japan. In North America, across southern Canada, northern and central USA from coast to coast. Also reported from N. Africa and found in New Zealand but eradicated.

Phytophthora syringae. [Distribution map].

1977 ◽  
Author(s):  
Keyword(s):  
South Africa ◽  
New Zealand ◽  
North America ◽  
Geographical Distribution ◽  
Pyrus Communis ◽  
Malus Pumila ◽  
Distribution Map ◽  
Irish Republic ◽  
Prunus Spp ◽  
New Distribution

Abstract A new distribution map is provided for Phytophthora syringae (Kleb.) Kleb. Hosts: Apple (Malus pumila), pear (Pyrus communis), Prunus spp., Citrus etc. Information is given on the geographical distribution in AFRICA, Morocco, South Africa, AUSTRALASIA & OCEANIA, Australia, New Zealand, EUROPE, Belgium, Britain, Denmark, France, Germany, Greece, Irish Republic, Italy (incl. Sicily), Netherlands, Portugal, Romania, Sweden, USSR (Lithuania), Yugoslavia, NORTH AMERICA, Canada, USA.

Gymnosporangium libocedri. [Descriptions of Fungi and Bacteria].

1977 ◽  
Author(s):  
G. Laundon
Keyword(s):  
Geographical Distribution ◽  
Pyrus Communis ◽  
Northern California ◽  
Malus Sylvestris

Abstract A description is provided for Gymnosporangium libocedri. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Aecia on apple (Malus sylvestris) and other Malus spp., pear (Pyrus communis) and quince (Cydonia vulgaris). Also on Amelanchier, Chaenomeles, Crataegus and Sorbus. Telia on Calocedrus (Libocedrus) decurrens. DISEASE: Aecia on leaves and fruits. Telia on leaves; usually not causing distortions but sometimes witches' brooms present. GEOGRAPHICAL DISTRIBUTION: Northwestern USA (Washington, Oregon to northern California and Nevada).

Candidatus Phytoplasma pyri. [Distribution map].

2019 ◽  
Author(s):  
Keyword(s):  
Czech Republic ◽  
North America ◽  
South America ◽  
Geographical Distribution ◽  
Pyrus Communis ◽  
Distribution Map ◽  
New Distribution ◽  
Distribution In Europe

Abstract A new distribution map is provided for Phytoplasma pyri. Mollicutes: Acholeplasmatales: Acholeplasmataceae. Hosts: pear (Pyrus communis). Information is given on the geographical distribution in Europe (Albania, Austria, Belarus, Belgium, Bosnia-Hercegovina, Bulgaria, Croatia, Czech Republic, France, Germany, Greece, Hungary, Italy, Moldova, Netherlands, Norway, Poland, Portugal, Serbia, Slovakia, Slovenia, Spain, Switzerland, UK), Asia (Azerbaijan, Iran, Lebanon, Turkey), Africa (Libya, Tunisia), North America (Canada, Ontario, USA, California, Connecticut, Oregon, Utah, Washington), South America (Argentina, Chile).

Candidatus Phytoplasma pyri. [Distribution map].

2013 ◽  
Author(s):  
Keyword(s):  
Czech Republic ◽  
North America ◽  
Geographical Distribution ◽  
Pyrus Communis ◽  
Distribution Map ◽  
New Distribution ◽  
Distribution In Europe

Abstract A new distribution map is provided for Candidatus Phytoplasma pyri. Mollicutes: Acholeplasmatales: Acholeplasmataceae. Hosts: pear (Pyrus communis). Information is given on the geographical distribution in Europe (Albania, Austria, Belgium, Bosnia-Herzegovina, Bulgaria, Croatia, Czech Republic, France, Germany, Hungary, Italy, Moldova, Netherlands, Poland, Portugal, Serbia, Slovakia, Slovenia, Spain, Switzerland, UK), Asia (Azerbaijan, Iran, Lebanon, Turkey), Africa (Libya, Tunisia), North America (Canada, Ontario, USA, California, Connecticut, Oregon, Utah, Washington).

Gymnosporangium clavipes. [Descriptions of Fungi and Bacteria].

1977 ◽  
Author(s):  
G. Laundon
Keyword(s):  
Geographical Distribution ◽  
Pyrus Communis ◽  
Juniperus Communis ◽  
Malus Sylvestris ◽  
Leaf Veins ◽  
The Usa

Abstract A description is provided for Gymnosporangium clavipes. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Aecia on quince (Cydonia vulgaris); apple (Malus sylvestris) and hawthorn (Crataegus), also on Amelanchier, Aronia, Cheanomeles, Cotoneaster, Mespilus, Photinia, Pyrus and Sorbus but not of any importance on pear (Pyrus communis). Telia on Juniperus communis, J. sihirica and J. virginiana. DISEASE: Quince rust. Aecia chiefly on fruit, sometimes on fusiform swellings of stems and leaf veins of quince; not reported on apple foliage and though infections damage the fruit aecial pustules are rarely formed on fruit of apple. Telia on slight fusiform swellings of twigs and larger branches of juniper. GEOGRAPHICAL DISTRIBUTION: Widespread throughout Canada and the USA. Also reported from Mexico (CMI Map 121, ed. 2, 1975).

Gymnosporangium fuscum. [Descriptions of Fungi and Bacteria].

1977 ◽  
Author(s):  
G. Laundon
Keyword(s):  
British Columbia ◽  
Geographical Distribution ◽  
Pyrus Communis ◽  
European Pear ◽  
Juniperus Chinensis

Abstract A description is provided for Gymnosporangium fuscum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Aecia on pear (Pyrus communis) and other species of Pyrus. Telia on Juniperus chinensis, J. sabina, J. virginiana and others of the 'sabina' group. DISEASE: European pear rust. Aecia on leaves, causing thickened spots, and on cankers on the branches. Telia on fusiform swellings of juniper stems. GEOGRAPHICAL DISTRIBUTION: Widely distributed in Europe and extending to Asia (Lebanon, Syria and Turkey) and N. Africa (Algeria, Morocco). Also introduced into N. America (British Columbia and California) (CMI Map 387, ed. 2, 1975).

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