brown spot needle blight of pine
Mycosphaerella dearnessii M.E. Barr

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    Symptoms (44)
    Fruiting Bodies (10)
    Asexual Spore (2)
    Control (2)
    Prescribed Fire (2)

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    Conifer (57)
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    Edward L. Barnard (10)
    H.C. Evans (10)
    Robert L. Anderson (10)
    USDA Forest Service - Region 8 - Southern Archive (8)
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Image Descriptor Description
5484085 Fruiting Bodies Fruiting bodies on Easter white pine needle.
5484086 Asexual Spore Olive brown spores.
4823033 Symptoms needle lesions with linear black perithecial stromata developing in the necrotic areas
4823034 Symptoms Infected older foliage of grass stage seedling. New needles at top of plant are not yet infected.
0656021 Fruiting Bodies Mycosphaerella dearnessii on Pinus oocarpa; note linearly arranged, solitary erumpent ascostromata. Compare with No. 0656022
0364032 Symptoms light damage on longleaf pine
4823032 Symptoms typical lesions
0364029 Symptoms light infection on seedling in foreground, healthy seeding in background
4824070 Symptoms Multiple infection spots spreading across nursery beds.
1436145 Symptoms
3035079 Symptoms close-up view of infected needles
3046051 Symptoms
4823031 Symptoms Typical brown spots on infected needles.
0656019 Symptoms Close-up of brown spot (Mycosphaerella dearnessii) symptoms on Pinus oocarpa.
3035078 Symptoms heavily infected grass stage seedlings
4212093 Symptoms close-up view of infected needles
0364028 Symptoms discoloration of longleaf needles in grass stage
3035067 Symptoms infection on older needles
0364030 Symptoms close-up view of infected needles
4212094 Symptoms infected needles
2733028 Symptoms severe infection of grass stage seedling
3035068 Symptoms infection on older needles
0908075 Symptoms heavily infested seedling in grass stage
3035075 Symptoms needle lesions
0176046 Symptoms on second year foliage of Pinus maximinoi.
1361139 Control Benomyl treated right
4823028 Symptoms Grass stage seedling damaged by infection.
5049039 Symptoms Brown spot needle blight. Demonstration of fungicide effectiveness.
1949037 Symptoms Mycosphaerella dearnessii infection on a Pinus sylvestris seedling.
1949039 Symptoms Typical lesions caused by Mycosphaerella dearnessii on Pinus sylvestris needles.
1949038 Symptoms Mycosphaerella dearnessii infection on a Pinus palustris seedling.
1949040 Symptoms Close-up of Mycosphaerella dearnessii infection on Pinus sylvestris needles.
1949036 Fruiting Bodies Conidia of Mycosphaerella dearnessii.
1949034 Fruiting Bodies Acervuli of Mycosphaerella dearnessii on Pinus sylvestris needles.
1502095 Symptoms Brown spot; longleaf pine
1502097 Symptoms Brown spot; longleaf pine
1502098 Symptoms Brown spot; longleaf pine
1503001 Symptoms Brown spot; longleaf pine
1503002 Symptoms Brown spot; longleaf pine
1503003 Symptoms Brown spot; longleaf pine; needle symptoms
1503005 Symptoms Brown spot; longleaf pine; needle symptoms
1502099 Symptoms Brown spot; longleaf pine; Erambert Seed Orchard
1503006 Asexual Spore conidia
5058062 Symptoms
5049040 Symptoms
5049041 Symptoms
5049042 Symptoms
0176050 Fruiting Bodies Lecanosticta (Mycosphaerella dearnessii anamorph) acervulus (transverse section); note dark (green) spore mass.
0176052 Fruiting Bodies Asci of Mycosphaerella dearnessii.
0176053 Fruiting Bodies Ascospores of Mycosphaerella dearnessii.
0176048 Sign Lecanosticta anamorph of Mycosphaerella dearnessii; note solitary, discrete acervulus with green conidial cirrus exuding onto needle.
0176055 Fruiting Bodies Lecanosticta conidia, to show variation in spore form with increasing altitude, on Pinus oocarpa; compare with Nos. UGA0176054 and UGA0176056 to note decrease in size, septation, pigmentation and ornamentation with increasing altitude.
0176056 Fruiting Bodies Lecanosticta conidia, to show variation in spore form with increasing altitude, on Pinus maximinoi; compare with Nos. UGA0176054 and UGA0176055 to note decrease in size, septation, pigmentation and ornamentation with increasing altitude.
0176054 Fruiting Bodies Lecanosticta conidia, to show variation in spore form with increasing altitude, on Pinus caribaea; compare with compare with Nos. UGA0176055 and UGA0176056 to note decrease in size, septation, pigmentation and ornamentation with increasing altitude.
1420017 Symptoms brown spot (left) and healthy (right) seedlings, March 1966
1423058 Symptoms Two year old seeding heavily infected, beginning height growth, Escambia Experimental Forest, April 1959
3035077 Prescribed Fire Fire used for control in infected stand
4824069 Symptoms Initial infection spot developing in nursery bed.
4823029 Foliage Normal-uninfected grass stage seedling.
4823030 Symptoms severe infection
4823027 Infestation Extensive patches in nursery beds
0364027 Prescribed Fire prescribed burn for the control of brown spot (after)
0364026 Control prescribed burn for the control of brown spot (before)

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