==References====Sources==Lyall, Andrew; "David Lyall (1817–1895): Botanical explorer of Antarctica, New Zealand, the Arctic and North America" (2010) 26:2 "The Linnean" pp.
* Lyall, Andrew; "David Lyall (1817–1895): Botanical explorer of Antarctica, New Zealand, the Arctic and North America" (2010) 26:2 "The Linnean" pp.