eChapter Name: Anatomical Features of Common Indian Timbers
9789394490130
eBook Name: BASICS OF WOOD ANATOMY
by Kanica Upadhyay, Rajneesh Kumar, Sneha Dobhal
Ring Porous
• having vessels more numerous and usually larger in cross section in the springwood with a resulting more or less distinct line between the springwood and the last season’s wood— compare diffuse-porous.
• In some species (e.g. Oak (Red Oak, White Oak) Teak and ash elm, hickory), the largest pores are in the earlywood while those in the latewood are more evenly distributed and uniform in size.
• These woods typically have distinct figures and patterns, and the uneven uptake of stain (the large pores soak up more colour) make the figure more pronounced.
• These are also known as open-grain woods
Semi-ring porous or Semi-diffuse porous
• In some species (e.g. Butternut, Black Cherry, Black Walnut, Pecan, Tanoak), pores are large in the earlywood and smaller toward the latewood, but without the distinct zoning seen in ring-porous woods.
• Also, some species that are usually ring-porous (e.g. Cottonwood) occasionally tend toward semi-ring porous.