Justus Carl Hasskarl

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Justus Carl Hasskarl
Born 6 December 1811
Kassel, Kingdom of Westphalia
Died 5 January 1894
Nationality Dutch
Occupation Botanist, Explorer
Known for Researching tropical flora

Justus Carl Hasskarl (December 6, 1811 – January 5, 1894) was a German explorer and botanist specializing in Pteridophytes, Bryophytes and Spermatophytes.


Justus Carl Hasskarl was born in Kassel in the Kingdom of Westphalia. He was co-founder of the Society of Natural Curiosities of India, in Bavaria and made researches for many years on the flora of Indonesia.

In 1834, Justus was developing studies in natural history, while preparing for expeditions.

In 1836, he traveled to Java, entering the Botanical Garden of Buitenzorg (Bogor) and in 1837 Justus began working on botany. With director Johannes Elias Teijsmann, they together rearranged their crops to taxonomic families, which would result in the displacement of many specimens in the botanical garden.

In 1852, the Netherlands government sent him to Lima and in early 1853, Justus made an expedition to the interior of Peru and even reaching the eastern border of Lake Titicaca. He sent his collections of seeds and specimens back to the Netherlands.

He returned to Java and in 1856 definitely returned to Europe in poor health.

Some publications[edit]

1856 . Filice javanicae . Batavia
1856 . Retzia observation of PLANTIS botanicae Botanici Bogoriensis horticulture . Leiden
1859 . Hortus Bogoriensis descr. Retziae seu nova editio (1. Teil, Amsterdam 1858, 2. Teil in Bonplandia
1866 . Neuer Rumphs Herbarium amboinense Schlüssel zu . Halle
1867 . Horti malabarici Rheedeani clavis locupletissima . Dresden
1870 . Commelinaceae indicae . Vienna
1847 . Plantae javanicae rariores . Berlin


The gender Hasskarlia Baill. in the family Euphorbiaceae is named in his honor.

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