blanket weed
noun
mass noun
1- a common green freshwater alga which forms long unbranched filaments, sometimes becoming a problem in over-enriched water and garden ponds水藻, 毛布状藻。
1.1
- Genus Spirogyra, division Chlorophyta (or phylum Chlorophyta, kingdom Protista).水绵属, 绿藻门（原生生物界）。