Vein Patterns

free and forked
free and forked, some
with bulbous endings 		free and forked, touching margin
free and forked, touching
cartilaginous margin 		free and forked, uniting
free and forked, uniting to
a marginal commissural vein
reticulate, areolate
reticulate veins, forming areoles 		areoles with included veins
areoles with included veins
pinnately arranged, joining to form commissural veins
pinnately arranged, joining to form
commissural veins (arrows) 		false veins
venuloid idioblasts or false veins
(arrow) between true veins

Drawings by Anna Stone from Hawai`i's Ferns and Fern Allies, Daniel D. Palmer, 2003.