Pamphlets on Forestry, Volume 41991 |
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Page 402
... glacial origin and , with the exception of the immediate borders of the river , have undergone but slight modification since glacial times . Perhaps its most striking topographic features are the rough morainic hills of its upper and ...
... glacial origin and , with the exception of the immediate borders of the river , have undergone but slight modification since glacial times . Perhaps its most striking topographic features are the rough morainic hills of its upper and ...
Page 402
... glacial till plains and clay moraines - a belt extending NE - SW , approximately parallel to the interlobate moraine . Here , although the hills are well marked , the slopes are more gradual and the basins broader . The river is ...
... glacial till plains and clay moraines - a belt extending NE - SW , approximately parallel to the interlobate moraine . Here , although the hills are well marked , the slopes are more gradual and the basins broader . The river is ...
Page 366
... Glacial and early Pleistocene age . If the plant materials of these deposits could be carefully worked over with reference to their successive floras , we might hope for some new light on glacial climate , since a part of the deposits ...
... Glacial and early Pleistocene age . If the plant materials of these deposits could be carefully worked over with reference to their successive floras , we might hope for some new light on glacial climate , since a part of the deposits ...
Contents
The Huron River valley | 402 |
their development and ecological conditions | 360 |
The bogplant societies | 429 |
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2d whorl 4th whorl abundant acidity Alnus aments apex apical shoot Aronia average basin bast fibers Betula bog areas bog plants bog societies bog water branches cambial activity cambium cassandra conifers creosote crystals cutting depressions diameter increase Dicotyledonous drainage drained factors Fagales fiber bundles foliar ray forest formation genera glacial growth habitats HARTIG heartwood hickory Huron June lake larch Larix layers leaves lobes lower mature Michigan moraine occur parenchyma parenchyma cells peat perianth periderm phloem pine Pinus piƱon Pinus rigida pith rays plant societies Platanus plates present Quercus radial region resin canals roots rows Salix sapwood scattered sclerenchyma sclerotic sedge shrubs sieve tubes soil species specimens sphagnum stem stone cells substratum surface swamp tamarack temperature thick tissue tracheids trees trunk twigs tyloses undrained uniseriate rays vegetation vessels Viola blanda walls white oak wood xerophilous xylem zone