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Frayed Ribbon Lichen

Ramalina roesleri

Frecklebelly Madtom

Noturus munitus

Freckled Cypripedium

Cypripedium lentiginosum

Freckled Guitarfish

Pseudobatos lentiginosus

Freemouth Hydrobe Snail

Aphaostracon chalarogyrus

Freemouth Hydrobe Snail

Aphaostracon chalarogyrum

Frejya's Fritillary

Boloria freija

Fremont County Rockcress

Boechera pusilla

French Cave Salamander

Speleomantes strinatii

French Grass

Euphorbia heleniana

French Meadow Bush-cricket

Roeseliana azami

French nase

Parachondrostoma toxostoma

French Quillwort

Isoetes tenuissima

French Speedwell

Veronica acinifolia

French Stone Grasshopper

Prionotropis azami

Freshwater Pearl Mussel

Margaritifera margaritifera

Fresno Kangaroo Rat

Dipodomys nitratoides

Litoria freycineti

Freyer's Fritillary

Melitaea arduinna

Melitaea phoebe

Freyer's Grayling

Hipparchia fatua

Fries' dotted lichen

Bacidia friesiana

Frigate Island Giant Tenebrionid Beetle

Polposipus herculeanus

Frigga's Fritillary

Boloria frigga

Fringe-horned Mason Bee

Osmia pilicornis