fern - any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by spores

Botrychium, genus Botrychium - grape fern; moonwort

Botrychium lunaria, common moonwort, moonwort - of America and Eurasia and Australia

Botrychium matricariifolium, daisy-leaved grape fern, daisyleaf grape fern - of North America and Eurasia

Botrychium multifidum, leathery grape fern - European fern with leathery and sparsely hairy fronds

Botrychium virginianum, rattlesnake fern - American fern whose clustered sporangia resemble a snake's rattle