Hypertext Webster Gateway: "Zygosperm"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Zygosperm \Zyg"o*sperm\, n. [Gr. ? a yoke + E. sperm.] (Bot.)
A spore formed by the union of the contents of two similar
cells, either of the same or of distinct individual plants.
Zygosperms are found in certain orders of alg[ae] and fungi.
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