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Definitions
A fern spore case that develops from a single surface cell.
Word origin
From lepto- + sporangium.
Used in a sentence
“Leptosporangia are unique among vascular plants in (1) developing from a single cell, and (2) having a single layer of cells making up the sporangium wall.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer0 curated clues
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