Pamphlets on Forestry, Volume 41991 |
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Page 370
... zone of the bog vege- tation . It consists of sedges , especially forms of Carex and Erio- phorum . Each year these plants send up stems and leaves from the matted rhizomes . At the approach of winter these are killed , and the snow ...
... zone of the bog vege- tation . It consists of sedges , especially forms of Carex and Erio- phorum . Each year these plants send up stems and leaves from the matted rhizomes . At the approach of winter these are killed , and the snow ...
Page 373
... zone in many lakes its strength to support heavy bodies . A man's weight will carry the substratum a foot beneath the surface of the water , but it seldom breaks under the strain . In the case of lakes where this zone is unusually ...
... zone in many lakes its strength to support heavy bodies . A man's weight will carry the substratum a foot beneath the surface of the water , but it seldom breaks under the strain . In the case of lakes where this zone is unusually ...
Page 433
... zone . Dryopteris thelypteris , Onoclea sensibilis , Juncus effusus , J. canadensis , Comarum palustre , Salix ... zone . Cassandra - sphagnum society . - Beyond the sedge zone the vegeta- tion is no longer arranged zonally . Conditions ...
... zone . Dryopteris thelypteris , Onoclea sensibilis , Juncus effusus , J. canadensis , Comarum palustre , Salix ... zone . Cassandra - sphagnum society . - Beyond the sedge zone the vegeta- tion is no longer arranged zonally . Conditions ...
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