lamina

References

Images

A detailed botanical illustration of a generalized fern sporophyte labeled with key parts: roots, rhizome, crosier, petiole, blade, midrib, and leaflet.

leaf development

lamina: Media

plant leaf

Images

A detailed botanical illustration of a generalized fern sporophyte labeled with key parts: roots, rhizome, crosier, petiole, blade, midrib, and leaflet.

fern anatomy

Generalized fern sporophyte.

Drawing by M. Pahl

leaf development

leaf development

Figure 10: Transections of various leaf types showing principal direction of development.

Encyclopædia Britannica, Inc.