Vascular Bundles

Athyriaceae Vascular Bundles
Athyriaceae
Thelypteridaceae
Aspleniaceae Vascular Bundles
Aspleniaceae
Polypodiaceae Vascular Bundles
Polypodiaceae
Dryopteridaceae Vascular Bundles
Dryopteridaceae
Dryopteridaceae Vascular Bundles, small fronds
Dryopteridaceae
small fronds
Marattiaceae Vascular Bundles
Marattiaceae

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