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Maybe you've tasted chestnuts roasting over an open fire, but have you ever heard of the tragedy of the American chestnut? This species, Castanea dentata, is effectively extinct -- thanks to the forces of the ruthless fungus Cryphonectria parasitica, agent in the now infamous chestnut blight.Shara Azad from Erika Edwards' Plant Diversity course at Brown University (Biol0430) investigates what happened to those thousands of acres of American chestnut forests and what glimmers of hope there may be in the future. Music is by Mobster - freemusicarchive.org/music/Mobster/My_Sleep/02_-_Deep_forest.Special thanks to the Brown University Science Center and the Granoff Center for the Arts.
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Mushroom Observer Image 231344: Cryphonectria parasitica (Murrill) M.E. Barr
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Mushroom Observer Image 520275: Pseudovalsa longipes (Tul.) Sacc
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Mushroom Observer Image 728503: Diaporthe eres Nitschke
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Herbarium specimen. Catalog no.: TROM:F-42255. Specimen ID: 3154956. Field no.: AG711995-2. Taxon rep.: Valsaria. Image quality: 1. Aspect ratio: 1.25.
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Herbarium specimen. Catalog no.: TROM:F-18460. Specimen ID: 3154952. Field no.: AG422008. Taxon rep.: Gnomonia alni-viridis. Image quality: 1. Aspect ratio: 1.347.
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Teppo Rama. Norwegian Institute for Nature Research (NINA). Teppo Rämä. Year: 2013. Contact: firmapost@nina.no.
Barcode of Life Data Systems
Stereo microscope. Catalog no.: O-F247800. Specimen ID: 5392711. Taxon rep.: Melanconis alni. Image quality: 1. Aspect ratio: 1.347.
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Briantspuddle, England, United Kingdom
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Mushroom Observer Image 950023: Cryphonectria parasitica (Murrill) M.E. Barr
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Mushroom Observer Image 819617: Endothiella singularis (Syd. & P. Syd.) Roane
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Herbarium specimen. Catalog no.: TROM:F-41154. Specimen ID: 3154975. Field no.: GM11774M. Taxon rep.: Ophiognomonia rosae. Image quality: 1. Aspect ratio: 1.347.
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Teppo Rama. Norwegian Institute for Nature Research (NINA). Teppo Rämä. Year: 2013. Contact: firmapost@nina.no.
Barcode of Life Data Systems
Stereo microscope. Catalog no.: O-F247773. Specimen ID: 5392684. Taxon rep.: Amphiporthe leiphemia. Image quality: 1. Aspect ratio: 1.347.
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Specimen. Catalog no.: TROM-F15823. Specimen ID: 6239713. Taxon rep.: Valsa nivea. Image quality: 1. Aspect ratio: 1.347.
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Specimen. Catalog no.: TROM-F15875. Specimen ID: 6239640. Taxon rep.: Diaporthe strumella. Image quality: 1. Aspect ratio: 1.347.
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Specimen. Catalog no.: TROM-F15825. Specimen ID: 6239714. Taxon rep.: Valsa salicina. Image quality: 1. Aspect ratio: 1.347.
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Specimen. Catalog no.: TROM-F15879. Specimen ID: 6239639. Taxon rep.: Diaporthe otthii. Image quality: 1. Aspect ratio: 1.347.
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Herbarium specimen. Catalog no.: TROM:F-25711. Specimen ID: 3155002. Field no.: GM12273B. Taxon rep.: Valsa salicis. Image quality: 1. Aspect ratio: 1.347.
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Teppo Rama. Norwegian Institute for Nature Research (NINA). Teppo Rämä. Year: 2013. Contact: firmapost@nina.no.
Barcode of Life Data Systems
Stereo microscope. Catalog no.: O-F247780. Specimen ID: 5392691. Taxon rep.: Diaporthe decedens. Image quality: 1. Aspect ratio: 1.347.
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Herbarium specimen. Catalog no.: TROM:F-25194. Specimen ID: 3154987. Field no.: GM12107. Taxon rep.: Valsa sordida. Image quality: 1. Aspect ratio: 1.347.
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Herbarium specimen. Catalog no.: TROM:F-25709. Specimen ID: 3155001. Field no.: GM12273. Image quality: 1. Aspect ratio: 1.347.
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Teppo Rama. Norwegian Institute for Nature Research (NINA). Teppo Rämä. Year: 2013. Contact: firmapost@nina.no.
Barcode of Life Data Systems
Stereo microscope. Catalog no.: O-F247823. Specimen ID: 5392734. Taxon rep.: Valsa auerswaldii. Image quality: 1. Aspect ratio: 1.347.
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Herbarium specimen. Catalog no.: TROM:F-25604. Specimen ID: 3154995. Field no.: GM12244A. Taxon rep.: Sydowiella. Image quality: 1. Aspect ratio: 1.347.
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Teppo Rama. Norwegian Institute for Nature Research (NINA). Teppo Rämä. Year: 2013. Contact: firmapost@nina.no.
Barcode of Life Data Systems
Stereo microscope. Catalog no.: TROM-F26043. Specimen ID: 5392777. Taxon rep.: Sillia. Image quality: 1. Aspect ratio: 1.347.
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Longitude (deg): -1.2. Latitude (deg): 51.4. Longitude (deg/min): 1ð 10' W. Latitude (deg/min): 51ð 20' N. Vice county name: Berks. Vice county no.: 22. Country: England. Stage: Anamorph. Associated species: Fraxinus excelsior. Identified by: Malcolm Storey. Comment: on seed end of fallen ash keys. Other taxa shown: tiny pycnidia to the right are Phoma samararum. Category: macro-photograph. Image scaling: enlarged. Photographic equipment used: Canon EOS10D dSLR and Macro MP-E 65mm x1 to x5 macro lens.