noun
microsporangium
Botanical term for the structure in which microspores are produced, found in seed plants and some ferns.
小胞子嚢は、花粉の元となる小胞子を作る器官です。
The microsporangium is the organ that produces microspores, which develop into pollen.
Compound of 小 (small) + 胞子 (spore) + 嚢 (sac, capsule), a calque from Western botanical terminology.