In 1894, Hallier became the second European to climb Mount Kelam (after a certain Dr. Gürtler) and the first to collect specimens of the pitcher plant Nepenthes clipeata.
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He studied botany and zoology at the University of Jena under Christian Ernst Stahl (1848–1919) and Ernst Haeckel (1834–1919), and continued his studies at the University of Munich under Ludwig Radlkofer (1829–1927) and Richard Hertwig (1850–1937).
In 1894, German botanist Johannes Gottfried Hallier became the second European to climb Mount Kemal, after a certain Dr. Gürtler.
Gottfried Wilhelm Leibniz | Johannes Vermeer | Johannes Kepler | Johannes Gutenberg | Gilbert Gottfried | Johannes Peter Müller | Johannes Ockeghem | Johann Gottfried Herder | Johannes Rau | Gottfried Keller | Johannes Müller | Johannes Heesters | Johannes Zukertort | Johannes Meursius | Gottfried von Einem | Gottfried Silbermann | Gottfried August Bürger | Cornelis Johannes van Houten | Johannes Meyer | Johannes Itten | Johannes Blaskowitz | Johann Gottfried Schadow | Johannes von Lahnstein | Johannes Mötsch | Johannes Hevelius | Johannes Ciconia | Gottfried Ludolf Camphausen | Mike Gottfried | Johann Gottfried Gruber | Johannes von Trapp |
Nepenthes clipeata was first collected in 1894 by Johannes Gottfried Hallier, who summited Mount Kelam 5 times between 30 January and 13 February.