Having two lamellae or thin plate-like structures, used especially in describing gills of fungi or other biological structures composed of two layers.
From Latin 'bi-' (two) plus 'lamellatus' (having thin plates); a variant of bilamellar used specifically in mycology and botany to describe structures with two distinct laminae.
Mushroom gills are often bilamellate, with alternating long and short gill plates that maximize spore production—it's like nature optimized a filing system for reproduction efficiency.
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