Nut (fruit) usage of the term is less restrictive, and many nuts (in the culinary sense), such as almonds, pecans, pistachios, walnuts, and Brazil nuts, are not nuts in a botanical sense. Common usage of the term often refers to any hard-walled, edible kernel as a nut. A nut in botany is a simple dry fruit in which the ovary wall becomes increasingly hard as it matures, and where the seed remains unattached or free within the ovary wall. Most nuts come from the pistils with "inferior" ovaries (see flower) and all are "indehiscent" (not opening at maturity). True nuts are produced,
Green tree python with large-scale smuggling of wild-caught green tree pythons in Indonesia. Despite this, the green tree python is rated as least concern on the IUCN Red List of endangered species. German naturalist Hermann Schlegel described the green tree python in 1872 as "Python viridis", from two specimens collected in the Aru Islands of Indonesia. His countryman Adolf Bernhard Meyer erected the genus "Chondropython" (though recognised similarity to "Morelia") and described the green tree python as "Chondropython azureus" in 1874, from a specimen collected in "Kordo", later determined to be Korido on Biak Island. This was destroyed in World War II. French