Osmunda definition

ŏz-mŭndə
Any of several ferns of the genus Osmunda, such as the cinnamon fern, having bipinnately compound sterile fronds and separate spore-bearing fertile fronds. The fibrous roots are used as a potting medium.
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Any of a genus (Osmunda, family Osmundaceae) of ferns having specialized fronds or portions of fronds bearing dense masses of spore cases.
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(botany) Royal fern, osmund (of genus Osmunda)
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A taxonomic genus within the family Osmundaceae "” the royal ferns.
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Other Word Forms

Noun

Singular:
osmunda
Plural:
osmundas

Origin of osmunda

  • New Latin Osmunda genus name from Middle English osmunde a kind of fern from Old French osmonde

    From American Heritage Dictionary of the English Language, 5th Edition

  • From the genus name.

    From Wiktionary

Osmunda Sentence Examples

  • These conditions of orchid-growing have undergone great changes of late years, and the plants are grown much as other stove and greenhouse plants in ordinary pots with composts not only of peat but of leaf-mould, and fibres from osmunda and polypodium ferns.

  • For potting or basketing purposes, or for plants requiring blockculture, the materials used are light fibrous peat, special leaf-mould, osmunda or polypodium fibre and living sphagnum moss, which supply free drainage for the copious supply of water required.

  • The two genera of this group, Osmunda and Todea, have thick erect stems, covered with the closely crowded leaf bases.

  • In Osmunda the region of the leaf which bears the sporangia has its lamina little developed; the leaf thus bears sterile and fertile pinnae, or, as in 0.

  • In habit some species of Alethopteris resembled the recent Angiopteris, while the Neuropteris foliage may be compared with that of an Osmunda.

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Words near osmunda in the Dictionary