nostoc
/ˈnɑstɑk/
noun
- A type of blue-green algae that forms jelly-like, greenish or brownish clumps on damp soil, rocks, or lawns, especially after rain.
- After the heavy rain, the garden path was covered with slippery nostoc.
- Nostoc often appears overnight on wet pavement, looking like dark green blobs.
- The children were fascinated by the strange, jelly-like nostoc they found in the backyard.