Pamphlets on Forestry, Volume 41991 |
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Page 423
principal seat of root activity . The small , fibrous roots of cassandra , andromeda , and the cranberry penetrate it in all directions , and it is from the water which is held among this moss and débris that they derive their water and ...
principal seat of root activity . The small , fibrous roots of cassandra , andromeda , and the cranberry penetrate it in all directions , and it is from the water which is held among this moss and débris that they derive their water and ...
Page 384
... root . The result of this pro- cess is a zigzag root showing root branches which have been succes- sively the main root tip . Occasionally several lateral roots develop and the main axis is divided . ( 6 ) The statement that waters ...
... root . The result of this pro- cess is a zigzag root showing root branches which have been succes- sively the main root tip . Occasionally several lateral roots develop and the main axis is divided . ( 6 ) The statement that waters ...
Page 384
... 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 begin ...
... 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 begin ...
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