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Acer
4
Alnus
4
Artemisia
4
Betula
4
Betula nana-type
4
Botryococcus
Carpinus
4
Caryophyllaceae
4
Charcoal
Chenopodiaceae
4
Corylus
4
Cyperaceae
4
Ephedra
Equisetum
4
Ericaceae
4
Fagus
Filipendula
4
Fraxinus
4
Galium
4
Hippophae
4
Juniperus
4
Lycopodium annotinum
4
Melampyrum
4
Nymphaea
3
Picea
3
Pinus
3
AGE
2
Achillea-type
2
Alisma gramineum-type
2
Apiaceae
2
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