- [l] [[2021-02-15 Beds#Ashy Grass Beds]] - [b] [Middle Stone Age bedding construction and settlement patterns at Sibudu, South Africa](https://pubmed.ncbi.nlm.nih.gov/22158814/) - ["] At ~77,000 years ago, people constructed plant bedding from sedges and other monocotyledons topped with aromatic leaves containing insecticidal and larvicidal chemicals