Sentence Examples with the word Scalariform

The scalariform hydroids of Ferns (fig.

N, One side of the end of hydroid (tracheid) of a Pteridophyte (fern), with scalariform pits.

Insigne, has scalariform tracheides, and is traversed by regular medullary rays, but in the forms from later ' horizons the tracheides are reticulately pitted, and the rays are for the most part replaced by a network of xylem-parenchyma.