Pamphlets on Forestry, Volume 41991 |
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Page 404
... CONIFER SOCIETY . This zone is composed of mature tama- racks , black spruces , low birch , and swamp maples ; young ... conifers are dominant or make up an integral part of the forests , the ecological rela- tions of the bog societies ...
... CONIFER SOCIETY . This zone is composed of mature tama- racks , black spruces , low birch , and swamp maples ; young ... conifers are dominant or make up an integral part of the forests , the ecological rela- tions of the bog societies ...
Page 458
... CONIFERS Tyloses in normal coniferous wood arise chiefly from the parenchyma- tous cells of the medullary rays . ( Pl . LVI , figs . 1 and 2. ) As in the hardwoods , it is by the growth of the membranes of the one - sided bor- dered ...
... CONIFERS Tyloses in normal coniferous wood arise chiefly from the parenchyma- tous cells of the medullary rays . ( Pl . LVI , figs . 1 and 2. ) As in the hardwoods , it is by the growth of the membranes of the one - sided bor- dered ...
Page 460
... conifers all of the species listed below have small ray pits . No true tyloses were found in these species . ( See Table III . ) TABLE III . - Occurrence of true tyloses in native conifers . Species . Limber pine ( Pinus flexilis ) ...
... conifers all of the species listed below have small ray pits . No true tyloses were found in these species . ( See Table III . ) TABLE III . - Occurrence of true tyloses in native conifers . Species . Limber pine ( Pinus flexilis ) ...
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