Pamphlets on Forestry, Volume 41991 |
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Page 292
... thick . In young trees , however , these are not the only factors . In the larch trees of 13 years of age the diameter increase did not begin first in those regions with the thinnest bark and best insolation . The thickness of the bark ...
... thick . In young trees , however , these are not the only factors . In the larch trees of 13 years of age the diameter increase did not begin first in those regions with the thinnest bark and best insolation . The thickness of the bark ...
Page 448
... thick - walled , radial walls undulate , no stomata ; lower epidermis supplied with unicellular short stiff hairs , and covered with wax , stomata slightly protuberant , strongly cuticularized beneath mid- vein ; palisade of three ...
... thick - walled , radial walls undulate , no stomata ; lower epidermis supplied with unicellular short stiff hairs , and covered with wax , stomata slightly protuberant , strongly cuticularized beneath mid- vein ; palisade of three ...
Page 448
... thick - walled cells ; no mycorhiza . Ledum groenlandicum . - Leaf : upper epidermis rugose , with scattered unicellular hairs , margins strongly revolute , cuticle present , cell walls thickened , the radial walls being broadly ...
... thick - walled cells ; no mycorhiza . Ledum groenlandicum . - Leaf : upper epidermis rugose , with scattered unicellular hairs , margins strongly revolute , cuticle present , cell walls thickened , the radial walls being broadly ...
Contents
The Huron River valley | 402 |
their development and ecological conditions | 360 |
The bogplant societies | 429 |
4 other sections not shown
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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