Complex sentence: Material had been collected by Scottish naturalist James Drummond in 1841 on "Banksia" wood along the Swan River, while more material collected from near the base of a "sickly but living" "Grevillea drummondii" was named as "Agaricus lampas" by Berkeley.
Split into simpler sentences: Material had been collected by Scottish naturalist James Drummond in 1841 on "Banksia" wood along the Swan River. More material collected from near the base of a "sickly but living" "Grevillea drummondii" was named as "Agaricus lampas" by Berkeley.