天之火期刊评职论文发表流程分享.pptVIP

* * * * * * * * * * * Diffuse Porous Hardwoods Common name Sugar maple Soft maple Red Alder Basswood Yellow poplar American beech Sycamore Genus/species Acer saccharum Acer rubrum / saccharinum Alnus rubra Tilia americana Liriodendron tulipifera Fagus grandifolia Platanus occidentalis Family Aceraceae (Sapindaceae) Aceraceae (Sapindaceae) Betulaceae Tiliaceae Magnoliaceae Fagaceae Platanaceae FW1035 Lab Lecture 3 期刊杂志 * Sugar (Hard) Maple - Acer saccharum Aceraceae (Sapindaceae) Prefers cool, moist climates Common throughout Northeastern US and Southwest Canada Black maple (Acer nigrum), a closely related species, is also sold as “hard maple”. The wood of the two species is indistinguishable. * Sugar Maple - Acer saccharum Mmmm…maple syrup Bird’s eye maple * Sugar Maple - Acer saccharum ID Characteristics: Higher density (SG = 0.63) Color: creamy white to light red-brown, lustrous with a dense latewood band of darker brown Pores: small, diameter of largest about the same as width of widest rays Longitudinal parenchyma: none obvious Rays: easily visible on the cross section, two apparent widths (uniseriate and 7-8 seriate). Ray ends usually obvious. Often confused with soft maple and birch Uses: furniture, flooring, pallets and packaging Figure: bird’s eye figured wood costs ~3 times more than non-figured * Soft Maple Acer rubrum / saccharinum - Red Maple, Acer rubrum  - Silver maple, Acer saccharinum Aceraceae (Sapindaceae) Red Maple Silver Maple * Soft Maple - Acer rubrum / saccharinum Red Maple Silver Maple The leaves are different, but the woods are indistinguishable. * Soft Maple ID features: Moderate density (SG=0.54) Color: creamy white to reddish brown, commonly with grayish cast or streaks, dense latewood band not as apparent as in hard maple Pores: small, with largest as wide as or slightly wider than the widest rays on the cross section Longitudinal parenchyma: none obvious Rays: variable in width (1-5 seriate). Ray ends