Not much that is a precise take on what was behind Lahaina but I found the above that shows it might be a weathered system of lower hardy natives, including cactus (Cactus, kiawe, lantana, and koa haole.) 2 of those are weeds of here - Lantana and Leucaena.
Low point of rain is 20 inches, 500mm, about half of what we get. 32 on the high end which is our low end.
https://www.ctahr.hawaii.edu/mauisoil/b_oxisol.aspx
Not much that is a precise take on what was behind Lahaina but I found the above that shows it might be a weathered system of lower hardy natives, including cactus (Cactus, kiawe, lantana, and koa haole.) 2 of those are weeds of here - Lantana and Leucaena.
Low point of rain is 20 inches, 500mm, about half of what we get. 32 on the high end which is our low end.
Here are some nearby sections:
https://dlnr.hawaii.gov/ecosystems/nars/maui/west-maui-2/
https://www.maunakahalawai.org/mauna-kahalawai-west-maui-mountains
https://dlnr.hawaii.gov/ecosystems/files/2013/07/West-Maui-Fact-Sheets-and-Topographical-Maps.pdf - East of Lahaina is the Panaewa Section