noun, plural pro·to·ne·ma·ta [proh-tuh-nee-muh-tuh]. /ˌproʊ təˈni mə tə/. Botany.
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Origin of protonema
OTHER WORDS FROM protonemapro·to·ne·mal, adjective
Words nearby protonema
How to use protonema in a sentence
Erect branches may arise from the protonema, and gemmae may be developed on it.
In mosses (fig. 12) a filamentous growth, the protonema, is first formed, and the leafy plants arise upon this.
Usually the protonema is filamentous and ceases to be evident after the plants have developed.
The protonema forms a flat, lobed, thalloid structure attached to the soil by rhizoids, and the plants arise from marginal cells.
The spore on germination forms a short filament which soon broadens out into the thalloid protonema.