TABLE IX - continued
North America
Fennoscandia*
Freauencv
Ash %
Scott, 1955
Joffe, 1949
*Various authors
Gymno- Fagaceae Non-fagacsoua
of dry
(freshly fallen leaves or
(old leaves)
sperms
Angiosperms
weight
foliage)
-Acer saccharurn
0
0
1
13
0
0
2
Cladrastis lutea
Juglans nigra
Aesculus glabra
Robinia pseudacack
0
0
2
Aesculus calijornica
Celtis reticulata
Fraxinus excelsior
0
0
3
16
0
0
2
Morus microphylla
Morus rubra
-.
Celtis occidentalis 26.0
Ulmus scabra 21.3
0
0
2
* AnderssonandEnander, 1948. Bonnevie-Svendsenctnd Gjems, 1957. Hewelman, 1925. KnudeenandMaurita-Hamson, 1939.
Mork, 1942. Viro, 1955.