Definitions
from The Century Dictionary.
- noun Plural of
prothallium .
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun Plural form of
prothallium .
Etymologies
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Examples
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Both male and female prothallia are much branched and very irregular in shape.
Elements of Structural and Systematic Botany For High Schools and Elementary College Courses Douglas Houghton Campbell
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By and by, if our culture has been successful, we may find attached to some of the larger of these, little fern plants growing from the under side of the prothallia, and attached to the ground by a delicate root.
Elements of Structural and Systematic Botany For High Schools and Elementary College Courses Douglas Houghton Campbell
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With care it is possible to get the mature prothallia, which should be treated as described for the fern prothallia.
Elements of Structural and Systematic Botany For High Schools and Elementary College Courses Douglas Houghton Campbell
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Almost nothing is known of the prothallia of our native species.
Elements of Structural and Systematic Botany For High Schools and Elementary College Courses Douglas Houghton Campbell
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The former produce male, the latter female prothallia.
Elements of Structural and Systematic Botany For High Schools and Elementary College Courses Douglas Houghton Campbell
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These look like small liverworts, and are the sexual plants (prothallia) of our ferns
Elements of Structural and Systematic Botany For High Schools and Elementary College Courses Douglas Houghton Campbell
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The sexual form, called the gametophyte or prothallia, is a tiny kidney-shaped plant and difficult to find in the wild.
unknown title 2009
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The sexual form, called the gametophyte or prothallia, is a tiny kidney-shaped plant and difficult to find in the wild.
unknown title 2009
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The sexual form, called the gametophyte or prothallia, is a tiny kidney-shaped plant and difficult to find in the wild.
unknown title 2009
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_macrospores_, producing prothallia which bear respectively antheridia and archegonia; in the Lycopodiaceæ, the two kinds of spores produce very rudimentary prothallia; in the cycads and conifers, the microspore or pollen grain only divides once or twice, just indicating a prothallium, and no antheridia or antherozoids are formed.
Scientific American Supplement, No. 531, March 6, 1886 Various
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