Identification of the Economic Woods of the United States: Including a Discussion of the Structural and Physical Properties of WoodWiley, 1919 - Broj stranica: 157 |
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Stranica 5
... the outside is bark . Between these two and making up the bulk of the structure is the wood or xylem . The wood , particularly in old sections , usually shows a central colored portion , the heartwood , and a nearly colorless 5 General.
... the outside is bark . Between these two and making up the bulk of the structure is the wood or xylem . The wood , particularly in old sections , usually shows a central colored portion , the heartwood , and a nearly colorless 5 General.
Stranica 9
... xylem . They increase in width uniformly and gradually as they recede from the cambium . In practically all cases of growth in thickness the epidermis is destroyed at an early period and is replaced by cork . Cork is suberised tissue ...
... xylem . They increase in width uniformly and gradually as they recede from the cambium . In practically all cases of growth in thickness the epidermis is destroyed at an early period and is replaced by cork . Cork is suberised tissue ...
Stranica 11
... xylem , an outer called the phloem , and , separ- ating the two , a thin layer of generative tissue , the cambium . These tissues , being the direct development of the cells of the procambium , are termed primary ( primary wood — proto- ...
... xylem , an outer called the phloem , and , separ- ating the two , a thin layer of generative tissue , the cambium . These tissues , being the direct development of the cells of the procambium , are termed primary ( primary wood — proto- ...
Stranica 12
... xylem , and on the outer phloem - collectively a fibro- vascular bundle . The cambia of the several bundles are later united into a continuous sheath , and the portion between the original bundles is termed the inter - fascicular ...
... xylem , and on the outer phloem - collectively a fibro- vascular bundle . The cambia of the several bundles are later united into a continuous sheath , and the portion between the original bundles is termed the inter - fascicular ...
Stranica 14
... xylem vessels in woody Dicotyledons is a very rare phenomenon which , according to Solereder ( loc . cit . , p . 1136 ) , has been recorded only in the exotic genera Drimys and Zygogynum of the Mag- noliacea , and Tetracentron and ...
... xylem vessels in woody Dicotyledons is a very rare phenomenon which , according to Solereder ( loc . cit . , p . 1136 ) , has been recorded only in the exotic genera Drimys and Zygogynum of the Mag- noliacea , and Tetracentron and ...
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Uobičajeni izrazi i fraze
absent Acer Anatomy Betula bordered pits brown cambium Catalpa Cedar cell walls cells high cells wide Comparative Anatomy cross section DEBARY dense Dicotyledons distinct early wood elements Esculus Forestry Fraxinus grain growth ring Guaiacum Gymnosperms Hardwood Record heartwood heartwood and sapwood Hicoria IRVING W Juglans Juniperus Juniperus virginiana late wood Leitneria lens Liquidambar Liriodendron Magnolia MAXWELL numerous Odor perforations simple phloem Pine Pinus Pith flecks pits into ray Platanus Plate Populus Pores in late portion Quercus radial ray cells half-bordered Ray parenchyma ray tracheids resin resin cells resin ducts Robinia sapwood Sassafras scalariform Sequoia simple pits soft species stem structure surface tangential Taxodium Texture Tilia Timber Toxylon tree tyloses U. S. Dept U. S. Div U. S. Forest Service Ulmus unaided eye usually Vessels without spirals wood fibres Wood parenchyma Wood-using Industries xylem
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