Loggerhead Key Key is named after the loggerhead sea turtle, an endangered marine reptile and species of sea turtle with a cosmopolitan distribution throughout the world. The Little Africa coral reef is located at Loggerhead Key. The reef is home to various species of tropical fish, spiny lobster and several juvenile game fish. Coral types include "various species of stony and gorgonian coral". The flora of Loggerhead Key includes mangrove, coconut trees, geiger trees, morning glory, sea lavender and cactus. In the 1840s, the island was covered with white buttonwood trees, which were burned or cut down by island inhabitants. Bay cedar
History of manifolds and varieties spaces with a differentiable or topological structure, while "variety" refers to spaces with an algebraic structure, as in algebraic varieties. In Romance languages, manifold is translated as "variety" – such spaces with a differentiable structure are literally translated as "analytic varieties", while spaces with an algebraic structure are called "algebraic varieties". Thus for example, the french word "" means topological manifold. In the same vein, the Japanese word "" (tayōtai) also encompasses both manifold and variety. ("" (tayō) means various.) Ancestral to the modern concept of a manifold were several important results of 18th and 19th century mathematics. The oldest