Colpoma crispum. [Descriptions of Fungi and Bacteria].

Author(s):  
D. W. Minter

Abstract A description is provided for Colpoma crispum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: On dead, rather brittle twigs of Picea abies, but usually attached but sometimes fallen by the time ascomata contain ascospores. Probably involved in self-pruning of the tree, but associated with lichen colonies unlike species of Therrya on Pinus (IMI Descriptions 1297 and 1298), and Colpoma on Quercus (IMI Description 942) which occur on twigs without lichen colonies. HOSTS: Juniperus virginiana (twig), Larix sp. (bark, twig), Picea abies (bark, twig), Picea sp. (bark), Pseudotsuga menziesii (twig). GEOGRAPHICAL DISTRIBUTION: Germany, Italy, Sweden, UK (England, Scotland, Wales), Ukraine, USA (Oregon). Unsuccessful searches in north-west Poland. Altitude records exist up to 950m (Ukraine). TRANSMISSION: By air-borne ascospores in humid conditions. In the temperate northern hemisphere, ascocarps probably mostly open in late summer and early autumn.

Author(s):  
D. W. Minter

Abstract A description is provided for Coccomyces leptideus. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Gaultheria shallon (twig), Rhododendron macrophyllum (twig), Vaccinium myrtillus (stem, twig), V. vitis-idaea (leaf, twig), Vaccinium sp. (stem, twig). Most records are from V. myrtillus. On Vaccinium species the fungus tends to be (and is most easily) found more often on taller bushes, but can also occur in arctic-alpine conditions on extremely low bushes. DISEASE: Like several other members of the Rhytismataceae on the Ericaceae, e.g. Lophodermium vagulum (IMI Description 789) and Terriera cladophila (IMI Description 1296), Coccomyces leptideus colonizes living twigs and ascomata may be found on pale subapical regions of dead bark on these twigs, while distal parts remain apparently healthy. Coccomyces leptideus is also found on recently killed twigs, though it is not clear it the fungus is responsible for their death. GEOGRAPHICAL DISTRIBUTION: Austria, Estonia, Finland, France, Iceland, Italy, Norway, Russia (Caucasus), Sweden, Switzerland, UK (Scotland, Wales), Ukraine, USA (Oregon, Washington). Altitude records exist up to 1900m (France), 1850m (Ukraine), 1070m (Scotland) and 870m (Norway). For further comment on the distribution of this species, see IMI Description 1296 (Terriera cladophila). TRANSMISSION: By air-borne ascospores in humid conditions. In the temperate northern hemisphere, ascocarps probably mostly open in late summer and early autumn.


Author(s):  
D. W. Minter

Abstract A description is provided for Lophodermium foliicola. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Fruits on dead fallen leaves under Crataegus where they can accumulate over winter; low bushes surrounded by Urtica and Rubus fruticosus agg. are among the most likely places to find it; probably less local than records suggest, as the conditions in which it is found deter less dedicated observers. It seems likely that, like many other members of the Rhytismataceae, the fungus colonizes the living plant, then fruits on those leaves after they have died. HOSTS: Leaves of Acer orientalis, Cotoneaster integerrimus, C. vulgaris, Cotoneaster sp., Crataegus coccinea, C. crus-galli, C. monogyna, C. oxyacanthoides, Crataegus sp., Pyrus amygdaliformis, P. communis, Pyrus sp., Rosaceae gen. indet., Sorbus torminalis. Records on genera other than Crataegus, particularly those not in the Rosaceae. need re-evaluation. GEOGRAPHICAL DISTRIBUTION: Austria, Azerbaijan, Belgium, former Czechoslovakia, Eire, Finland, France, Germany, Greece, Ireland, Italy, Russia (Kursk Oblast), Spain, Sweden, UK (England, Scotland, Wales), Ukraine. Altitude records exist up to 1580m (Spain) and 1050m (Greece). Widespread but local throughout Europe and just into Asia on dead fallen leaves of various members of the Rosaceae, but particularly Crataegus. TRANSMISSION: By air-borne ascospores in humid conditions. In the temperate northern hemisphere, ascocarps probably mostly open in late summer and early autumn.


Author(s):  
S. Diamandis

Abstract A description is provided for Rhizosphaera kalkhoffii. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Abies nobilis, A. pectinata, A. sibirica, Picea abies, P. engelmannii, P. glauca, P. mariana, P. omorica, P. orientalis, P. pungens, P. schrenkiana, P. sitchensis, Pinus austriaca, P. densiflora, P. excelsa, P. montana, P. mugo, P. nigra, P. strobus, P. thunbergii, Pseudotsuga menziesii, Tsuga heterophylla. DISEASE: Needle blight of pine and spruce. GEOGRAPHICAL DISTRIBUTION: Asia Japan), Europe (Denmark, Germany, Great Britain, Holland, Sweden), North America (Canada: Quebec, USA). TRANSMISSION: By splash-borne conidia.


Author(s):  
E. Punithalingam

Abstract A description is provided for Gremmeniella abietina. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: The host range is almost completely confined to species of spruce and pine. The following have been recorded: Picea abies, P. mariana, P. rubens, Pinus cembra, P. monticola, P. mugo, P. nigra var. austriaca, P. nigra var. maritima, P. pinaster, P. strobus, P. sylvestris, P. contorta, P. radiata, P. resinosa, P. sabiniana, P. banksiana, Pseudotsuga menziesii. DISEASE: Brunchorstia dieback of pines. The disease is typified by the death of the growing point and the apical needles of the lower branches of pine and spruce. Under severe conditions the disease can affect all the foliage of the host, which may die. The fungus forms pycnidia on infected terminal buds and at the base of needles. Trees 10-20 yr of age typically affected in Europe. It can also cause serious nursery losses. GEOGRAPHICAL DISTRIBUTION: Europe (Scandinavia, Britain, France, Germany, Netherlands, Spain, Italy, Austria, USSR, Finland); N. America (east Canada, north-east USA). (CMI Map 423, ed. 2, 1968). TRANSMISSION: By conidia liberated from pycnidia on infected tissues under wet conditions, when they are dispersed by a splash mechanism. Ascospores appear to be relatively unimportant in the spread of the disease.


Author(s):  
D. W. Minter

Abstract A description is provided for Xerotrema megalosporum, found on whitened old bare wood. Some information on its morphology, dispersal and transmission and conservation status is given, along with details of its geographical distribution (Canada (British Columbia), USA (Oregon, Washington), Greece, Irish Republic, Norway and UK) and hosts (Abies sp., Arctostaphylos sp., Picea abies, Pinus contorta, Pinus heldreichii, Pinus sylvestris, Pinus sp., Pseudotsuga menziesii and Taxus baccata).


Author(s):  

Abstract A new distribution map is provided for Contarinia pseudotsugae Condrashoff (Diptera: Cecidomyiidae). Hosts: Douglas fir (Pseudotsuga menziesii). Information is given on the geographical distribution in Europe (Belgium, France, Germany and Netherlands) and North America (Canada, British Columbia, USA, California, Idaho, Michigan, Montana, Oregon, Pennsylvania and Washington).


Author(s):  

Abstract A new distribution map is provided for Phytophthora pseudotsugae Hamm & Hansen. Host: douglas fir (Pseudotsuga menziesii). Information is given on the geographical distribution in NORTH AMERICA, USA, OR, WA.


Author(s):  

Abstract A new distribution map is provided for Rhabdocline pseudotsugae Syd. Hosts: Douglas fir (Pseudotsuga menziesii). Information is given on the geographical distribution in EUROPE, Belgium, Britain, Czechoslovakia, Denmark, France, Germany, Irish Republic, Netherlands, Norway, Poland, Romania, Sweden, Switzerland, Yugoslavia, NORTH AMERICA, Canada (Alberta, British Columbia), USA.


Author(s):  

Abstract A new distribution map is provided for Dendroctonus pseudotsugae Hopkins Coleoptera: Scolytidae Hosts: Mainly Douglas fir (Pseudotsuga menziesii), also other Pseudotsuga spp. Information is given on the geographical distribution in NORTH AMERICA, Canada, Alberta, British Columbia, Mexico, USA, Arizona, California, Colorado, Idaho, Montana, Nevada, New Mexico, Oregon, Texas, Utah, Washington, Wyoming.


Author(s):  
S. Diamandis

Abstract A description is provided for Rhizosphaera pini. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Abies balsamea, A. cephallonica, A. fraseri, A. grandis, A. pectinata, A. veitchii, Pinus sp., Tsuga diversifolia, also possibly Picea abies. DISEASE: Needle blight of firs. GEOGRAPHICAL DISTRIBUTION: Asia (Japan), Europe (Austria, Czechoslovakia, France, Germany, Great Britain, Greece, Italy), North America (Canada, USA). TRANSMISSION: Not known.


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