Prothalli

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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