Voorbeelden van lignified

• Both veins and stems show fine longitudinal striae, probably representing the lignified vascular fibres.

• Older, lignified internodes are seldom attacked and thus do not require defence by ants.

• After shedding, the parenchymal cells become lignified and die, but the structure of both cuticle and palisade cells is retained.

• They are composed largely of cellulose and are not lignified.

• Seed protection: no seed protection, thick lignified seed coat.

• First, they are highly lignified.

• They are composed of many individual sclerenchyma fibers, each of which has primary cell walls of cellulose and hemicellulose and secondary cell walls that are heavily lignified.

• Alternatively, the presence of coarse and hypercoarse scratches along with gouges and large pits suggested the ingestion of foliage and lignified portions.