Justus Carl Hasskarl was a Dutch explorer and botanist specialising in Pteridophytes, Bryophytes and Spermatophytes.

Biography

He was cofounder of the Society of natural Curiosities of India, in Bavaria. He made researches for many years on the flora of Indonesia.

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

In 1836, he traveled to Java, entering the Botanical Garden of Buitenzorg (Bogor), and in 1837 he began working on botany. With director Johannes Elias Teijsmann

Johannes Elias Teijsmann

Johannes Elias Teijsmann was a botanist and plant collector. He was born in Arnhem, Netherlands.Teijsmann travelled to Java in 1830 as Gardener of Governor General van den Bosch. He was appointed the Curator of the Buitenzorg Botanic Gardens the following year, a post he held until 1869...

, 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, he made an expedition to the interior of Peru. He sent his collections of seeds and specimens to the Netherlands. He reached the eastern border of Lake Titicaca.

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

Some publications

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

Honours

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