BioImages: The Virtual Field-Guide (UK)
Melampsoridium betulinum (Pers.) Kleb., 1899 (Birch Rust)
| Date: | 10 August 2007 |
| Location: | Berks, England |
| Voucher: | 10/08/2007[A] (Please quote this in any queries about this record) |
| State: | Uredinia (II) |
| Record Summary: | infection on leaf undersides of saplings/regrowth of Downy Birch |
| Associated organism: | on underside live, spaling leaf of Betula pubescens |
| Identification Notes: | Infection on leaf undersides of saplings/regrowth of Downy Birch in shady corner. Uredosori: hypophyllous, on small yellow spots. Uredospores: clavate, sparsely warty, smooth at apex, 28-41/10.5-14µm. With orange contents. Many white, empty uredospores where they've been eaten by Cecidomyid larvae. |
Images etc
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Infected leaf - top surface - close-up - enlarged | 500 by 413 pixels | ||
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Infected leaf - top surface - close-up - magnified | 500 by 378 pixels | ||
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Infected leaf - under surface - close-up | 420 by 500 pixels | ||
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Infected leaves and leaf sprays - top surface | 500 by 366 pixels | ||
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Infected leaves and leaf sprays - under surface | 500 by 396 pixels | ||
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Uredia on leaf under surface - magnified | 500 by 333 pixels | ||
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Uredia on leaf under surface - magnified | 500 by 333 pixels | ||
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Uredia on leaf under surface - magnified | 500 by 333 pixels | ||
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Uredium - magnified | 500 by 333 pixels | ||
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Uredium - magnified | 500 by 333 pixels | ||
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Uredospores - magnified | 500 by 367 pixels |
