Karl Bartholomaeus Heller (20 November 1824 – 14 December 1880) was an Austrian

botanist Botany, also called , plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek wo ...

and naturalist who explored Mexico in 1845–48 and published his memoir.The English translation of his account of his journeys, ''Reisen in Mexico in den Jahren 1845–48'' (1853) is Terry Rugeley, tr. and ed., ''Alone in Mexico : The Astonishing Travels of Karl Heller, 1845–1848.'' which is volume 40 of ''Latin American Studies'' In the latter year Johann Jakob Heckel published the livebearing freshwater Green swordtail (''Xiphophorus helleri''), since the early 20th century a common aquarium fish, from specimens Heller deposited in Vienna. Born in Moravia, Heller was a professor at the Theresianum in Vienna. Among Heller's later works is his defense of

Darwinism Darwinism is a scientific theory, theory of Biology, biological evolution developed by the English naturalist Charles Darwin (1809–1882) and others, stating that all species of organisms arise and develop through the natural selection of smal ...

, ''Darwin und der Darwinismus'', 1869.

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{{DEFAULTSORT:Heller, Karl Bartholomaeus 1824 births 1880 deaths 19th-century Austrian botanists Botanists from the Austrian Empire