Orbicule
From Infogalactic: the planetary knowledge core
Orbicules (syn. Ubisch bodies, con-peito grains) are small acellular structures of sporopollenin (known size range from < 1 µm to 15 µm, but usually sub-micrometre) that might occur on the inner tangential and radial walls of tapetal cells. Their function is unclear at this moment. Current consensus is that they are just a by-product of pollen wall sporopollenin synthesis.
External links
- A photo of Nelumbo orbicules: Lua error in package.lua at line 80: module 'strict' not found.
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