Pamphlets on Forestry, Volume 41991 |
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Page 289
... important factors in all growth phenomena . In 1909 and 1911 the opening of buds of larch began April 19. In 1909 the xylem formation began on May 25 , while in 1911 the xylem formation began about May 20. * The temperature , moisture ...
... important factors in all growth phenomena . In 1909 and 1911 the opening of buds of larch began April 19. In 1909 the xylem formation began on May 25 , while in 1911 the xylem formation began about May 20. * The temperature , moisture ...
Page 402
... importance only . In southern Colorado , Arizona , and New Mexico , it has a great eco- nomic and silvicultural ... important tree . It is occasion- ally seen in pure stands over small areas , but this is rare . LOCAL OCCURRENCE The ...
... importance only . In southern Colorado , Arizona , and New Mexico , it has a great eco- nomic and silvicultural ... important tree . It is occasion- ally seen in pure stands over small areas , but this is rare . LOCAL OCCURRENCE The ...
Page 432
... important that the absence of any gradation between the forest societies of the upland and of the bog be kept in mind . On this lake , then , there are two divergent series of plant societies . Starting with practically the same species ...
... important that the absence of any gradation between the forest societies of the upland and of the bog be kept in mind . On this lake , then , there are two divergent series of plant societies . Starting with practically the same species ...
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