Joseph Henry Maiden was advised to take a long sea voyage for his health when he was 21 years old. He left London for New South Wales (on the east coast of Australia) and stayed there for the rest of his life making a career as a botanist studying Australian Floral; he died in 1925 at the age of 66. There are quite a few of his publications available on Internet Archive. I particularly enjoyed illustrations in The Forest Flora of New South Wales (available here). The forest plants of Australia are often very different from North America….even though there are some that have been brought to places in North America where they could thrive (eucalyptus, for example).