Pamphlets on Forestry, Volume 41991 |
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Page 392
... base of the trees , probably growth began aloft earlier . That growth was not evi- denced at the base of tree A was due , according to the researches of R. HARTIG ( 7 ) , to at least three causes , namely ( a ) long trunk , ( b ) age ...
... base of the trees , probably growth began aloft earlier . That growth was not evi- denced at the base of tree A was due , according to the researches of R. HARTIG ( 7 ) , to at least three causes , namely ( a ) long trunk , ( b ) age ...
Page 394
... base of the crown downward , investigations on trees A , B , and C seem to give convincing evidence . Cambial activity was already in progress on both sides of the base in trees B and C on April 27 , while both cuttings in tree A on ...
... base of the crown downward , investigations on trees A , B , and C seem to give convincing evidence . Cambial activity was already in progress on both sides of the base in trees B and C on April 27 , while both cuttings in tree A on ...
Page 395
... base of the branches is of interest when compared with that of the main trunk . Fig . 11 shows a section from the base of a limb six years old . Fig . 10 is from a cutting taken from the main axis just above the branch , and fig . 12 a ...
... base of the branches is of interest when compared with that of the main trunk . Fig . 11 shows a section from the base of a limb six years old . Fig . 10 is from a cutting taken from the main axis just above the branch , and fig . 12 a ...
Contents
The Huron River valley 351 | 351 |
their development and ecological conditions | 360 |
The bog plant societies | 429 |
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2d whorl 4th whorl abundant acidity aggregate ray Alnus aments annual ring apex Aronia basin bast fibers Betula bog areas bog plants bog societies bog water branches cambial activity cambium cassandra conifers creosote crystals cutting depressions diameter increase Dicotyledons drainage drained factors Fagales fiber bundles foliar ray forest formation glacial growth habitats HARTIG heartwood hickory Huron June lake larch Larix layers leaves lower 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 tyloses undrained uniseriate rays vegetation vessels Viola blanda walls white oak wood xerophilous xylem zone μ μ μ