Pamphlets on Forestry, Volume 41991 |
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Page 259
... Middle bark . The characteristics of the middle bark are found in the presence of secretion cavities and in the occur- rence of sclerenchyma , and perhaps the most noticeable feature is the never failing presence of calcium oxalate ...
... Middle bark . The characteristics of the middle bark are found in the presence of secretion cavities and in the occur- rence of sclerenchyma , and perhaps the most noticeable feature is the never failing presence of calcium oxalate ...
Page 287
... middle regions of the seven branches . TABLE X AVERAGE DIAMETER INCREASE OF XYLEM AT APEX , MIDDLE , AND BASE OF ALL LATERAL Region of cutting Apical . BRANCHES Diameter increase of xylem 20.8 μ 7.5 μ Middle . Basal . 2.5 μ From ...
... middle regions of the seven branches . TABLE X AVERAGE DIAMETER INCREASE OF XYLEM AT APEX , MIDDLE , AND BASE OF ALL LATERAL Region of cutting Apical . BRANCHES Diameter increase of xylem 20.8 μ 7.5 μ Middle . Basal . 2.5 μ From ...
Page 290
... middle regions of the trunk on April 19 an increase in phloem cells was evident . The increase of cambium and phloem was gradual over the entire trunk in tree A up to May 25 , the greatest increase being main- tained in the middle ...
... middle regions of the trunk on April 19 an increase in phloem cells was evident . The increase of cambium and phloem was gradual over the entire trunk in tree A up to May 25 , the greatest increase being main- tained in the middle ...
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 piñon 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