Pamphlets on Forestry, Volume 41991 |
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Page 384
... normal roots . In the case of roots developed in loose sphagnum , sand , and moist air , an abundance of root hairs were pro- duced . The normal roots in Larix have a diameter about three times that of the mycorhiza , so that when they ...
... normal roots . In the case of roots developed in loose sphagnum , sand , and moist air , an abundance of root hairs were pro- duced . The normal roots in Larix have a diameter about three times that of the mycorhiza , so that when they ...
Page 384
... normal acid . The lowest values are found in areas covered by bog sedges and swamp plants , and they are approximately the same . The highest occur under the tamaracks . The variations in acidity are related inversely to the temperature ...
... normal acid . The lowest values are found in areas covered by bog sedges and swamp plants , and they are approximately the same . The highest occur under the tamaracks . The variations in acidity are related inversely to the temperature ...
Page
... sudden cessation of sap flow . Fig . 2. - No tyloses ( V ) ; empty vessels . Normal tyloses not yet developed . Fig . 3. - Young ( YT ) and well - developed normal tyloses ( T ) . B RI WT R2 R3 Journal of Agricultural Research Vol.
... sudden cessation of sap flow . Fig . 2. - No tyloses ( V ) ; empty vessels . Normal tyloses not yet developed . Fig . 3. - Young ( YT ) and well - developed normal tyloses ( T ) . B RI WT R2 R3 Journal of Agricultural Research Vol.
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