11. After approximately 9, 000 years this shrubland became woodland which supporter spruce and alder trees . 12. The woods are important for oak, ash and alder trees as well as a carpet of wildflowers. 13. By 1940 the townsite was overgrown by alder trees but several buildings and the unoccupied hotel building remained. 14. He set up a hand-me-down tent among spruce and alder trees just outside downtown Juneau. 15. Most of these piles were made from trunks of alder trees , a wood noted for its water resistance. 16. Wildlife in the nature reserve includes common alder trees , alder buckthorn, grey sallow and crack willow predominate. 17. The river's name is derived from " alor " an Old English word for the alder tree . 18. Among the plants that could have provided bast were the yew and alder trees or the milkweed and nettle, they said. 19. Another inscription, at Ebchester, refers to him as " Cocidius Vernostonus ", Cocidius of the alder tree . 20. This in turn allowed alder trees to grow in the area, which eventually created a layer of peat above the mudflats.