| onoclea | (n) one species: sensitive fern; in some classifications included in Polypodiaceae, Syn. genus Onoclea |
| ostrich fern | (n) tall fern of northern temperate regions having graceful arched fronds and sporophylls resembling ostrich plumes, Syn. fiddlehead, Pteretis struthiopteris, shuttlecock fern, Onoclea struthiopteris, Matteuccia struthiopteris |
| sensitive fern | (n) beautiful spreading fern of eastern North America and eastern Asia naturalized in western Europe; pinnately divided fronds show a slight tendency to fold when touched; pinnules enclose groups of sori in beadlike lobes, Syn. bead fern, Onoclea sensibilis |
| Onoclea | prop. n. A genus consisting of only species: the sensitive fern; in some classifications it is included in the |
| 雁足 | [がんそく, gansoku] (n) (See 草蘇鉄) ostrich fern; Onoclea orientalis [Add to Longdo] |