Lemna Obscura
''Lemna obscura'' is a species of plant in the subfamily Lemnoideae of the famly Araceae. It ranges from the United States south to Colombia and Ecuador. References Lemnoideae Flora of Ecuador Taxonomy articles created by Polbot Taxobox binomials not recognized by IUCN {{Araceae-stub ...
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Elias Landolt
Elias Landolt (1926–2013) was a Swiss geobotanist, known for his publications on Switzerland's native flora and Lemnoideae (popularly called duckweeds or water lenses). Life and career Landolt grew up in the Zurich district Enge. He was the eldest son of the lawyer, politician and later Zurich's mayor Emil Landolt and the great-grandson of his namesake Elias Landolt, a forest scientist. At ETH Zurich (ETHZ), Elias Landolt (the younger) studied natural science from 1945 to 1949 and received his doctorate there in 1953 under the professors Ernst Gäumann and Walo Koch with a dissertation on ''Ranunculus montanus'' (mountain buttercup). From 1953 to 1955, he was a postdoc in California, first at the Carnegie Institution for Science, Department of Plant Biology, Stanford, and then at Caltech in Pasadena. Returning to Zurich in 1955, Landolt joined the academic staff of ETHZ, where he worked until his retirement. In 1957 he completed his habilitation thesis ''Physiologische un ...
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