Pamphlets on Forestry, Volume 41991 |
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Page 420
... covered area 3 feet ( 0.9m ) above the surface of the bog . The temperatures for the most part were taken on clear afternoons about 3 P. M. when the differences are at their maxima . Date →→ 4 29 3 April April April April April May ...
... covered area 3 feet ( 0.9m ) above the surface of the bog . The temperatures for the most part were taken on clear afternoons about 3 P. M. when the differences are at their maxima . Date →→ 4 29 3 April April April April April May ...
Page 443
... covering . The roots are thickly covered with root - hairs which have been persistent at least through one winter . The root - hairs are large and brown in color . The appearance of these rootstocks , as a whole , is very suggestive of ...
... covering . The roots are thickly covered with root - hairs which have been persistent at least through one winter . The root - hairs are large and brown in color . The appearance of these rootstocks , as a whole , is very suggestive of ...
Page 448
... covered with wax , especially at the stomata , guard cells slightly elevated . Mycorhiza present in the larger roots , wanting in the hairlike branches , no root hairs . Andromeda polifolia . - Leaf : margins revolute , upper epidermal ...
... covered with wax , especially at the stomata , guard cells slightly elevated . Mycorhiza present in the larger roots , wanting in the hairlike branches , no root hairs . Andromeda polifolia . - Leaf : margins revolute , upper epidermal ...
Contents
The Huron River valley 351 | 351 |
their development and ecological conditions | 360 |
The bog plant societies | 429 |
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2d whorl 4th whorl abundant acidity aggregate ray Alnus aments annual ring apex Aronia basin bast fibers Betula bog areas bog plants bog societies bog water branches cambial activity cambium cassandra conifers creosote crystals cutting depressions diameter increase Dicotyledons drainage drained factors Fagales fiber bundles foliar ray forest formation glacial growth habitats HARTIG heartwood hickory Huron June lake larch Larix layers leaves lower 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 tyloses undrained uniseriate rays vegetation vessels Viola blanda walls white oak wood xerophilous xylem zone μ μ μ