protonemal

• a word derived from protonema.
  protonema

  noun

  a primary, usually filamentous structure produced by the germination of the spore in mosses and certain related plants, and from which the leafy plant which bears the sexual organs arises as a lateral or terminal shoot.

Example Sentences

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protonemal

The protonemal filaments may be made to grow from almost any part of the plant by keeping it moist, but grow most abundantly from the base of the stem.

From Elements of Structural and Systematic Botany For High Schools and Elementary College Courses by Douglas Houghton Campbell

The branched filamentous rhizoids which spring from the lower region of the stem also correspond to protonemal branches.

From Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" by Various

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