Prothalli
Prothallus Pro*thal"lus, n.; pl. {Prothalli}. [NL., fr. Gr. ? before + ? a young shoot.] (Bot.) The minute primary growth from the spore of ferns and other Pteridophyta, which bears the true sexual organs; the o["o]phoric generation of ferns, etc. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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  • reproductive system, plant — Introduction       any of the systems, sexual or asexual, by which plants reproduce. In plants, as in animals, the end result of reproduction is the continuation of a given species, and the ability to reproduce is, therefore, rather conservative …   Universalium

  • prothallium — [prō thal′ēəs] n. pl. prothalli [prō thal′ēī΄] or prothalluses [prō thal′ē əm] n. prothallia [prō thal′ēə] [ModL < Gr pro , before + thallos, a shoot (< IE base * dhal , to bloom > Alb dal, to sprout) + IUM] Bot. a minute, flat, greenish …   English World dictionary

  • Christmas fern — Fern Fern (f[ e]rn), n. [AS. fearn; akin to D. varen, G. farn, farnkraut; cf. Skr. par[.n]a wing, feather, leaf, sort of plant, or Lith. papartis fern.] (Bot.) An order of cryptogamous plants, the {Filices}, which have their fructification on the …   The Collaborative International Dictionary of English

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  • Fern — (f[ e]rn), n. [AS. fearn; akin to D. varen, G. farn, farnkraut; cf. Skr. par[.n]a wing, feather, leaf, sort of plant, or Lith. papartis fern.] (Bot.) An order of cryptogamous plants, the {Filices}, which have their fructification on the back of… …   The Collaborative International Dictionary of English

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  • Lygodium palmatum — Fern Fern (f[ e]rn), n. [AS. fearn; akin to D. varen, G. farn, farnkraut; cf. Skr. par[.n]a wing, feather, leaf, sort of plant, or Lith. papartis fern.] (Bot.) An order of cryptogamous plants, the {Filices}, which have their fructification on the …   The Collaborative International Dictionary of English

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