the REST of the pictures on this page will give you a better overall feel for this wood | |
white oak / Quercus spp. (primarily Quercus alba; see fact sheet) 5" x 5" flat cut, 5" x 5" quartersawn, 3/4" wide end grain, and a 1/4" x 1/4" end grain closeup. Ring porous with a thick row of earlywood pores changing immediately to a latewood with very small pores in radial strands, sometimes looking like dendritic groups. Banded parenchyma is visible. The ray thicknesses vary from fairly thin to quite thick and are visible with the naked eye. The large ray flakes on the quartersawn face are typical of white oak (which tends to have longer rays and thus longer flakes than the red oaks) "White oak" is a name that encompasses a great many species in the genus Quercus. Over 20 of them use the name white oak (among others) but there are other oaks that are in the white oak group don't use "white" in their name. The white oak group can be distinguished from the red oak group primarily by virtue of the white oaks having tyloses in the pores and the red oaks not having it. Note the "clogged up" look of the pores shown here; that's tyloses. There is also some fine dust in the pores but the fundamental clogging is tyloses. Sometimes, as here, it makes the pores appear as though the are pore multiples but they are not. Some live oaks (which have radically different end grain characteristics from the normal white oaks) are in the white oak group. Such oaks are shown on this site on the live oak page. |
A NOTE ABOUT OAK NAMES | DISTINGUISHING RED / WHITE / LIVE |
There is universal agreement that all oaks belong to the genus Quercus of the family Fagaceae but beyond that there are differing reports on the breakdown. The most common seems to be this: Leucobalanus, the white oaks, are further subdivided into live oaks, chestnut oaks and the rest of the white oaks. Erythrobalanus, the red oaks, are further subdivided into the live oaks and the rest of the red oaks. Live oaks are oaks that keep their leaves year-round and which otherwise come from both the red oak and the white oak groups. Depending on the authority, there are stated to be somewhere between 250 and 900 different wood producing species in the genus Quercus. For woodworkers, what matters is this: the oaks that grow in America are generally sold only as red or white, not live or chestnut. Botanists care about the distinction but woodworkers generally have no reason to although you will sometimes see oaks broken out into different species due to differences in hardness or looks. As just one example, burr oaks tend to have MUCH stronger rays than most other oaks. Another oak commonly sold in America is English brown oak; this is a form of European oak (Quercus petrae) and I have broken it out separately. There are some other woods that use the name oak (some of which I have also broken out separately), but which are not actually oaks. None of these are of the genus Quercus. These include sheoak, fishtail oak, Australian oak, Tasmanian oak, New Guinea oak and various varieties of "silky oak". |
NOTE: these pics were all taken in very bright incandescent lighting ("soft white" at 2700K) colors will vary under other lighting conditions |