Pamphlets on Forestry, Volume 41991 |
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Page 267
... parenchyma alternating . In Gleditsia , only , a few aggregate crystals were found . The parenchyma cells are always a little wider than the bast fibers . The sieve tubes in Robinia are short , just a little wider than the parenchyma ...
... parenchyma alternating . In Gleditsia , only , a few aggregate crystals were found . The parenchyma cells are always a little wider than the bast fibers . The sieve tubes in Robinia are short , just a little wider than the parenchyma ...
Page 417
... parenchyma cell . ( Pl . LII , figs . 2 and 3 ; Pl . LVII , fig . 2. ) Frequently more than one tylose is formed from one parenchyma cell , but only one active nucleus - that of the parenchyma cell - is present , though this may be ...
... parenchyma cell . ( Pl . LII , figs . 2 and 3 ; Pl . LVII , fig . 2. ) Frequently more than one tylose is formed from one parenchyma cell , but only one active nucleus - that of the parenchyma cell - is present , though this may be ...
Page 417
... parenchyma cells in the annual ring has been divided 1 into three different types , as follows : 1. Terminal parenchyma , which is situated at the periphery of the annual growth ring , on the outer face of the summer wood . 2 ...
... parenchyma cells in the annual ring has been divided 1 into three different types , as follows : 1. Terminal parenchyma , which is situated at the periphery of the annual growth ring , on the outer face of the summer wood . 2 ...
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