tyloses

(gymnosperms), and to the tracheids, parenchyma cells, and the wood fibres in the broad-leaved trees (angiosperms); the vessels in the latter, however, form open passages except when clogged by ingrowth called tyloses, and the resin canals in the former sometimes form occasional openings.

Seasoning of Wood

Pores in early wood plugged with tyloses, collected in

Studies of Trees Jacob Joshua Levison

If pores appear, their arrangement, both in the early wood and in the late wood, should be carefully noted; also whether the pores are open or filled with a froth-like substance known as _tyloses_.

Studies of Trees Jacob Joshua Levison

Pores in early wood in a broad band, oval in shape, mostly free from tyloses.

Studies of Trees Jacob Joshua Levison

Ash. Pores in early wood in a rather broad band (occasionally narrow), oval in shape, see Fig. 148, tyloses present.

Studies of Trees Jacob Joshua Levison

When a tree becomes infected it is stimulated to produce tyloses or swellings in the vessels of the wood.

Northern Nut Growers Association Report of the Proceedings at the 43rd Annual Meeting Rockport, Indiana, August 25, 26 and 27, 1952

The presence of tyloses in white oak makes even this a difficult problem.

Seasoning of Wood

Pores are usually open though tyloses may occur, Fig. 147; the early wood pores are in several rows and the transition to the small ones in late wood is gradual.

Studies of Trees Jacob Joshua Levison

In white oak the vessels of the heartwood especially are closed, very generally by ingrowths called tyloses.

Seasoning of Wood

Pores in early wood moderately large, not abundant, nearly round, filled with tyloses.

Studies of Trees Jacob Joshua Levison