Botanical explorations of Puerto Rico by N. L. Britton and E. G. Britton: their significance in plant conservation, horticulture, and education.
From 1906 to 1933, N. L. Britton and E. G. Britton carried out 16 expeditions to Puerto Rico. They collected 10 139 numbers of phanerogams and cryptogams that resulted in 38 new species, representing over 10% of the island's endemic flora. Their activities involved not only floristics but also studies on horticultural value of native and introduced species. The Brittons were concerned about the effects of deforestation on the island, and they were influential on the establishment of a forestry policy for the island.