Gold-back Fern, Gold Fern
Pentagramma triangularis ssp. triangularis
Synonym: Pityrogramma triangularis
Dorsal surface of the leaf blade of gold-back fern as seen high on the Hamilton Mountain Trail in the western Columbia River Gorge..........February 18, 2010.
Ventral surface of the leaf blade of gold-back fern as seen high on the Hamilton Mountain Trail in the western Columbia River Gorge..........February 18, 2010.
Gold-back fronds emerging from a rock crevice in a cliff next to Eightmile Creek in the Columbia Hills State Park...........February 23, 2010.
Paul Slichter