Of Cycadaceae the Stangeria paradoxa is peculiar to Natal.
In leaves having a very firm texture, as those of Coniferae and Cycadaceae, the cells of the parenchyma immediately beneath the epidermis are very much thickened and elongated in a direction parallel to the surface of the leaf, so as to be fibre-like.
As a fairly typical and well-known example of the Cycadaceae, a species of the genus Cycas (e.g.
It is in the nature of the secondary xylem that the Coniferales are most readily distinguished from the Dicotyledons and Cycadaceae; the wood is homogeneous in structure, consisting almost entirely of tracheids with circular or polygonal bordered pits on the radial walls, more particularly in the late summer wood.
Soc. v., 1900); Scott, " The Anatomical Characters presented by the Peduncle of Cycadaceae," Ann.