Origin of ring-porous
Examples from the Web for ring-porous
A wood with its large pores collected into one row or in a single band is said to be ring-porous.Studies of Trees|Jacob Joshua Levison
Ring-porous woods—Pores numerous, usually visible on cross-section without magnifier.
Ring-porous woods, in which the pores appear (in a cross-section) in concentric rings, as in chestnut, ash and elm.
The wood is ring-porous, that is, the inner edge of the yearly growth ring has a row of large pores.American Forest Trees|Henry H. Gibson
That would represent the ring-porous woods, and the large tubes would be called vessels, or trache.