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- Betula nigra L. (Береза черная, Betulaceae)
Betula nigra L. (Береза черная, Betulaceae)
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- Pollen unit: monad
- Size: medium
- Sculpture type: scabrate
- Aperture number: 3
- Aperture location: zonoaperturate
- Aperture type: porus
- Features: поры камерные
- Этикетка: 5689 Winsconsin,Richland,Country,1 км N от Gotham, 5.5.1979, собр. M.Nee