Johannes Hendrikus Kern

Dutch botanist (1903-1974).

Johannes Hendrikus Kern (1903–1974) was a Dutch botanist, with an international reputation as an expert on the Cyperaceae (the sedge family). Kern graduated from a secondary school in Nijmegen in 1922 with a diploma qualifying him as a teacher. He received further diplomas: in 1927 for head-teacher, in 1928 for French, and in 1933 for German. He was an elementary school teacher from 1922 to 1927 at Mill, and from 1927 to 1940 at Vlaardingen. He was a head-teacher from 1940 to 1942 at Dedemsvaart, from 1942 to 1946 at Gorinchem, and from 1946 to 1949 at Nijmegen. From his youth he studied botan

Abbreviations: J.Kern
Occupations: botanist
Citizenships: Kingdom of the Netherlands
Dates: 1903-00-00T00:00:00Z – 1974-07-29T00:00:00Z
Birth place: Nijmegen
Direct attributions: 67 plants, 0 fungi
Authorship mentions: 69 plants, 0 fungi

67 plants attributed, 2 plants contributed to69 plants:

Raphanus sativus var. niger (Black Radish) (Mill.) J.Kern. 1789
vegetable plant variety in the brassicaceae family
The black radish, a cultivated variety of the radish, is a root vegetable of the family Brassicaceae and is a variety of winter radish. It is also called black Spanish radish or Erfurter radish. The edible root has a tough black skin and white flesh. There are round and elongated varieties. Like other radishes, black radish has a sharp flavor due to various chemical compounds that the plant primarily uses as pest defense. Some of these phytochemicals are produced in high concentrations.
Pelargonium lanceolatum (Spearleaf Storksbill) (Cav.) J.Kern. 1822
plant species in the geraniaceae family
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Machaerina acuta (Baumea Acuta) (Labill.) J.Kern 1959
perennial plant species in the cyperaceae family
Baumea acuta, commonly known as pale twig-rush, is a flowering plant in the sedge family, Cyperaceae, that is native to southern parts of Australia.
Eleocharis sundaica J.Kern 1958
perennial plant species in the cyperaceae family
Eleocharis sundaica is a sedge of the family Cyperaceae that is native to Australia. The rhizomatous perennial herb to grass-like sedge typically grows to a height of 0.6 to 1 metre (2.0 to 3.3 ft) and is sometime found partly submerged. It blooms between May and August producing white flowers. It is found in and around swamps and pools of water in the Kimberley region of Western Australia where it grows in sandy soils.
Cyperus trialatus (Boeckeler) J.Kern 1954
perennial plant species in the cyperaceae family
Cyperus trialatus is a species of sedge that is native to south eastern parts of Asia and south western parts of Melanesia.
Carex cretica (Crete Sedge) Gradst. & J.Kern 1968
perennial plant species in the cyperaceae family
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Machaerina mariscoides (Tropical Twigrush) (Gaudich.) J.Kern 1959
perennial plant species in the cyperaceae family
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Fimbristylis lawiana (Boeckeler) J.Kern 1956
perennial plant species in the cyperaceae family
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Cyperus pachycephalus J.Kern 1952
annual plant species in the cyperaceae family
Cyperus pachycephalus is a species of sedge that is native to New Guinea.
Cyperus curvistylis J.Kern 1965
perennial plant species in the cyperaceae family
Cyperus curvistylis is a species of sedge that is native to Queensland.
Cyperus crypsoides J.Kern 1952
perennial plant species in the cyperaceae family
Cyperus crypsoides is a species of sedge that is native to Sulawesi.
Cyperus alulatus (Winged Sedge) J.Kern 1952
annual plant species in the cyperaceae family
Cyperus alulatus is a species of sedge that is native to eastern parts of Asia.
Scleria oblata S.T.Blake ex J.Kern 1961
perennial plant species in the cyperaceae family
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Fimbristylis blepharolepis J.Kern 1963
annual plant species in the cyperaceae family
Fimbristylis blepharolepis is a sedge of the family Cyperaceae that is native to Australia. The annual grass-like or herb sedge typically grows to a height of 0.5 to 1.3 metres (1.6 to 4.3 ft). It blooms between May and June and produces brown flowers. In Western Australia it is found in and around swamps in the Kimberley region.
Capitularina involucrata (Valck.Sur.) J.Kern 1974
plant species in the cyperaceae family
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Tetraria borneensis J.Kern 1958
perennial plant species in the cyperaceae family
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Scleria papuana J.Kern 1961
perennial plant species in the cyperaceae family
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Scleria densispicata (C.B.Clarke) J.Kern 1961
perennial plant species in the cyperaceae family
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Schoenus delicatulus (Fernald) J.Kern 1958
perennial plant species in the cyperaceae family
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Mapania maschalina J.Kern 1963
plant species in the cyperaceae family
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Mapania holttumii J.Kern 1958
perennial plant species in the cyperaceae family
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Machaerina nuda (Steud.) J.Kern 1959
perennial plant species in the cyperaceae family
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Machaerina lamii (Kük.) J.Kern 1959
vulnerable and perennial plant species in the cyperaceae family
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Machaerina gunnii (Hook.f.) J.Kern 1959
perennial plant species in the cyperaceae family
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Machaerina flexuosa (Boeckeler) J.Kern 1959
perennial plant species in the cyperaceae family
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Fimbristylis trichoides J.Kern 1965
annual plant species in the cyperaceae family
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Fimbristylis tenuinervia J.Kern 1955
annual plant species in the cyperaceae family
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Fimbristylis subalata J.Kern 1955
perennial plant species in the cyperaceae family
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Fimbristylis spicigera J.Kern 1955
perennial plant species in the cyperaceae family
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Fimbristylis sleumeri J.Kern 1968
perennial plant species in the cyperaceae family
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