Definitions

from The Century Dictionary.

  • noun The largest and most widely distributed genus of ferns, typical of the suborder Polypodiaceæ and tribe Polypodieæ.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Bot.) A genus of plants of the order Filices or ferns. The fructifications are in uncovered roundish points, called sori, scattered over the inferior surface of the frond or leaf. There are numerous species.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • proper noun A taxonomic genus within the subfamily Polypodioideae — the polypod ferns.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a genus of ferns belonging to the family Polypodiaceae and having rounded naked sori

Etymologies

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Examples

  • The pills contain an extract from a South American tropical fern Polypodium leucotomos, which has been found to ward off sunburn if taken regularly.

    Simple Skin Beauty Ellen Marmur 2009

  • A 2004 study done by Harvard University scientists discovered that the pills dramatically decreased redness in the skin of human subjects.6 Another clinical test found that after oral administration of Polypodium leucotomos, there was increased photoprotection of immune Langerhans cells.7 The science behind this new antioxidant supplement is pretty solid, and, if taken correctly, it could help prevent sun damage.

    Simple Skin Beauty Ellen Marmur 2009

  • The pills contain an extract from a South American tropical fern Polypodium leucotomos, which has been found to ward off sunburn if taken regularly.

    Simple Skin Beauty Ellen Marmur 2009

  • Shown above is they tiny emerging Polypodium virginianum with an Antennaria wildling to the leftBut some of the plants have bravely endured sun and drought, alive if not prospering.

    The Sunny Woodland-GBDW* « Fairegarden 2009

  • The pills contain an extract from a South American tropical fern Polypodium leucotomos, which has been found to ward off sunburn if taken regularly.

    Simple Skin Beauty Ellen Marmur 2009

  • A 2004 study done by Harvard University scientists discovered that the pills dramatically decreased redness in the skin of human subjects.6 Another clinical test found that after oral administration of Polypodium leucotomos, there was increased photoprotection of immune Langerhans cells.7 The science behind this new antioxidant supplement is pretty solid, and, if taken correctly, it could help prevent sun damage.

    Simple Skin Beauty Ellen Marmur 2009

  • A 2004 study done by Harvard University scientists discovered that the pills dramatically decreased redness in the skin of human subjects.6 Another clinical test found that after oral administration of Polypodium leucotomos, there was increased photoprotection of immune Langerhans cells.7 The science behind this new antioxidant supplement is pretty solid, and, if taken correctly, it could help prevent sun damage.

    Simple Skin Beauty Ellen Marmur 2009

  • The tree trunks are draped with orchids (e.g. Dendrobium cunninghamii) and ferns such as Hymenophyllum dilatatum, Polystichum adiantiforme, Polypodium diversifolium, and Asplenium flaccidum.

    Rakiura Island temperate forests 2008

  • Above 700 m, Meliosma nesites, Oreopanax xalapense, and Prunus capuli dominate the landscape; humidity levels in this area are higher than in any other part of the island, and therefore lichens and ferns (e.g. Adiantopsis radiata, Polypodium alfredii, and Asplenium formosum) grow abundantly.

    Islas Revillagigedo dry forests 2007

  • There are also a few shrubs, and an herb layer with low species diversity that may include Lepturus repens, Thuarea involuta, Fimbristylis cymosa, and Polypodium scolopendria.

    Eastern Micronesia tropical moist forests 2007

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