Pieter Willem Korthals

Dutch botanist (1807–1892).

Pieter Willem Korthals (1 September 1807, Amsterdam – March 1892, Haarlem) was a Dutch botanist. Korthals was the official botanist with the Dutch East India Service from 1831 to 1836. Among his many discoveries was the medicinal plant Kratom (Mitragyna speciosa). Korthals wrote the first monograph on the tropical pitcher plants, "Over het geslacht Nepenthes", published in 1839. Carl Ludwig Blume named the botanical genus Korthalsia (family Arecaceae) after Korthals, and Philippe Édouard Léon Van Tieghem introduced the genus name Korthalsella (family Santalaceae) in his honor. Bulbophyllum

Abbreviations: Korth.
Occupations: scientific collector, botanist, botanical collector
Citizenships: Kingdom of the Netherlands
Languages: Dutch
Dates: 1807-09-01T00:00:00Z – 1892-02-08T00:00:00Z
Birth place: Amsterdam
Direct attributions: 150 plants, 0 fungi
Authorship mentions: 264 plants, 0 fungi

150 plants attributed, 114 plants contributed to264 plants:

Mitragyna speciosa (Kratom) Korth. 1841
medicinal and psychoactive plant species in the rubiaceae family
Mitragyna speciosa is a tropical evergreen tree of the Rubiaceae family native to Southeast Asia. It is indigenous to Cambodia, Thailand, Indonesia, Malaysia, Myanmar, and Papua New Guinea, where its dark green, glossy leaves, known as kratom, have been used in herbal medicine since at least the 19th century. They have also historically been consumed via chewing, smoking, and as a tea. Kratom contains multiple alkaloids (primarily, mitragynine and to a lesser extent, 7-hydroxymitragynine) that bind to opioid receptors, most notably as partial μ-opioid agonists. Kratom can also be subjectively
Mitragyna Korth. 1839
plant genus in the rubiaceae family
Mitragyna is a genus of trees in the family Rubiaceae found in the tropical and subtropical regions of Asia and Africa. Members of this genus contain antimalarial and analgesic indole alkaloids. The genus name refers to the mitre-shaped stigma (Greek mitra = headband and gyne = women).
Schima wallichii (Needlewood Tree) (DC.) Korth. 1842
medicinal plant species in the theaceae family
Schima wallichii, commonly known as the needlewood or Chinese guger tree, is a species of evergreen tree in the tea family, Theaceae. Schima wallichii is native to a wide area of China and tropical Asia. It grows 10–20 metres (33–66 ft) tall.
Nepenthes gracilis (Slender Pitcher Plant) Korth. 1840
plant species in the nepenthaceae family
Nepenthes gracilis (; from Latin: gracilis "slender"), or the slender pitcher-plant, is a common lowland pitcher plant that is widespread in the Sunda region. It has been recorded from Borneo, Cambodia, Peninsular Malaysia, Singapore, Sulawesi, Sumatra, and Thailand. The species has a wide altitudinal distribution of 0 to 1,100 meters (and perhaps even 1,700 meters) above sea level, although most populations are found below 100 meters and plants are rare above 1,000 meters. Despite being a widespread plant, natural hybrids between N. gracilis and other species are quite rare. Nepenthes
Anisoptera Korth. 1841
plant genus in the dipterocarpaceae family
Anisoptera is a genus of plants in the family Dipterocarpaceae. It contains ten species distributed from Chittagong in southeast of Bangladesh to New Guinea. Eight out of the ten species are currently listed on the IUCN Red List. Of these, four species are listed as critically endangered and the other four as endangered. The main threat is habitat loss.
Nepenthes bongso Korth. 1840
plant species in the nepenthaceae family
Nepenthes bongso is a tropical pitcher plant endemic to Sumatra, where it has an altitudinal distribution of 1000–2700 m above sea level. The specific epithet bongso refers to the Indonesian legend of Putri Bungsu (literally "youngest daughter"), the spirit guardian of Mount Marapi.
Quercus argentata Korth. 1842
plant species in the fagaceae family
Quercus argentata is an evergreen tropical oak species in the beech family Fagaceae. There are no known subspecies. It is placed in subgenus Cerris, section Cyclobalanopsis. It derived its name from the silvery hairs on the lower surface of its leaves. The species is distributed in Borneo, Sumatra including Bangka, the peninsula of Malaysia, and western Java. It can grow 10 meters and up heights of 40 meters. The species was first described by Pieter Willem Korthals in 1842.
Phalaenopsis sumatrana Korth. & Rchb.f. 1860
plant species in the orchidaceae family
Phalaenopsis sumatrana is a species of orchid native to peninsular Thailand, Vietnam and southern Sumatra.
Nepenthes boschiana (Pitcher Plant) Korth. 1840
endangered plant species in the nepenthaceae family
Nepenthes boschiana (; after Johannes van den Bosch), or Bosch's pitcher-plant, is a tropical pitcher plant endemic to the Meratus Mountains in South Kalimantan, Indonesian Borneo. It is most closely allied to N. faizaliana. Nepenthes borneensis is considered a synonym of this species. Nepenthes boschiana has no known natural hybrids. No valid forms or varieties have been described. Nepenthes boschiana belongs to the loosely defined "N. maxima complex", which also includes, among other species, N. chaniana, N. epiphytica, N. eymae, N. faizaliana, N. fusca, N. klossii, N. maxima, N.
Mitragyna parvifolia (True Kadamb) (Roxb.) Korth. 1839
plant species in the rubiaceae family
Mitragyna parvifolia is a tree species found in Asia, native to India and Sri Lanka. Mitragyna species are used medicinally and for their fine timber throughout the areas where they grow. M. parvifolia reaches heights of 50 feet with a branch spread over 15 feet. The stem is erect and branching. Flowers are yellow and grow in ball-shaped clusters. Leaves are a dark green in color, smooth, rounded in shape, and opposite in growth pattern.
Dipterocarpus baudii Korth. 1840
vulnerable plant species in the dipterocarpaceae family
Dipterocarpus baudii is the accepted name of a tropical forest tree species in the family Dipterocarpaceae; there are no known subspecies.
Anisoptera costata Korth. 1840
endangered plant species in the dipterocarpaceae family
Anisoptera costata is an endangered species of plant in the family Dipterocarpaceae. The specific epithet costata means "ribbed", referring to the prominent venation of the leaf blade. A huge emergent tree up to 65 m high, it is found in evergreen and semi-evergreen lowland tropical seasonal forests of Indo-Burma and in mixed dipterocarp forests of Malesia. The species was described by Pieter Willem Korthals in 1840.
Anisoptera marginata Korth. 1841
vulnerable plant species in the dipterocarpaceae family
Anisoptera marginata is a tree in the family Dipterocarpaceae. The specific epithet marginata means "bordered", referring to the leaf veins.
Dipterocarpus elongatus Korth. 1841
vulnerable plant species in the dipterocarpaceae family
Dipterocarpus elongatus is a species of tree in the family Dipterocarpaceae found in Indonesia (Kalimantan and Sumatra), Malaysia (Peninsular Malaysia and Sarawak) and Singapore. This large tree occurs in secondary and primary forest, as well as in freshwater swamp forest.
Dapania Korth. 1854
plant genus in the oxalidaceae family
Dapania is a genus of flowering plants belonging to the family Oxalidaceae. Its native range is Madagascar, Western Malesia. Species: Dapania grandifolia Veldkamp Dapania pentandra Capuron Dapania racemosa Korth.
Coptosapelta Korth. 1851
plant genus in the rubiaceae family
Coptosapelta is a genus of flowering plants in the family Rubiaceae. It is found in tropical and subtropical Asia. The genus has not been placed within a subfamily and is sister to the rest of Rubiaceae.
Streblosa Korth. 1851
plant genus in the rubiaceae family
Streblosa is a genus of flowering plants belonging to the family Rubiaceae. Its native range is Thailand to Malesia.
Praravinia Korth. 1842
plant genus in the rubiaceae family
Praravinia is a genus of flowering plants belonging to the family Rubiaceae. Its native range is Malesia. Species:
Ploiarium Korth. 1841
plant genus in the bonnetiaceae family
Ploiarium is a genus of three species of woody plants in the family Bonnetiaceae. It is native to tropical forests and peat swamp forests in Southeast Asia including southern Indochina, Malay Peninsula, Sumatra, and Borneo. Species are generally slow growing with irregular flowering and fruiting cycles. Colonization of plants by arbuscular mycorrhizal fungi is known to improve growth and biomass.
Pellacalyx Korth. 1836
plant genus in the rhizophoraceae family
Pellacalyx is a genus of trees in the family Rhizophoraceae, distributed in Southeast Asia and surrounding regions. As of December 2023, Plants of the World Online accepts the following species: Pellacalyx axillaris Korth. Pellacalyx cristatus Hemsl. Pellacalyx lobbii (Hook.f.) A.Schimp. Pellacalyx parkinsonii C.E.C.Fisch. Pellacalyx pustulata Merr. Pellacalyx saccardianus Scort. Pellacalyx symphiodiscus Stapf Pellacalyx yunnanensis Hu
Driessenia Korth. 1842
plant genus in the melastomataceae family
Driessenia is a genus of flowering plants belonging to the family Melastomataceae. Its native range is Western and Central Malesia. The genus name is in honour of Peter van Driessen (1753–1828), Dutch doctor, pharmacist, chemist and botanist. Species:
Boschia Korth. 1844
plant genus in the malvaceae family
Boschia is a genus of flowering plants belonging to the family Malvaceae. Its native range is Indo-China and Malesia. Species: Boschia excelsa Korth. Boschia grandiflora Mast. Boschia griffithii Mast. Boschia mansonii Gamble Boschia oblongifolia Ridl.
Schoutenia ovata Korth. 1848
plant species in the malvaceae family
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Rennellia Korth. 1851
plant genus in the rubiaceae family
Rennellia is a genus of flowering plants belonging to the family Rubiaceae. Its native range is Indo-China to western Malesia. It is found in Borneo, Malaya, Myanmar, the Nicobar Islands, Sumatera and Thailand. The genus name of Rennellia is in honour of James Rennell (1742–1830), an English geographer, historian and a pioneer of oceanography. It was first described and published in Ned. Kruidk. Arch. Vol.2 (Issue 2) on page 255 in 1851.
Quercus oidocarpa Korth. 1844
plant species in the fagaceae family
Quercus oidocarpa is a species of oak. It is a tree native to parts of Indochina and western Malesia, including Myanmar, Thailand, Vietnam, Peninsular Malaysia, Borneo, Sumatra, and Bangka. It grows in lowland and montane tropical moist forests from 150 to 1,700 metres elevation. It has a heavy timber which is used locally for construction.
Pellacalyx axillaris Korth. 1836
plant species in the rhizophoraceae family
Pellacalyx axillaris is a tree in the family Rhizophoraceae. The specific epithet axillaris means 'axillary', referring to the inflorescences.
Neckia serrata (Sauvagesia Serrata) Korth. 1848
plant species in the ochnaceae family
Neckia serrata is a species of flowering plant in the family Ochnaceae. It is a shrub or subshrub native to Borneo, Peninsular Malaysia, Sumatra, and the Philippines. It is the sole species in genus Neckia.
Hopea sangal Korth. 1841
vulnerable plant species in the dipterocarpaceae family
Hopea sangal is a tree in the family Dipterocarpaceae. It is native to tropical Asia.
Coptophyllum Korth. 1851
plant genus in the rubiaceae family
Coptophyllum is a genus of flowering plants in the family Rubiaceae. The genus is found from the Nicobar Islands to western Malesia.
Anerincleistus Korth. 1842
plant genus in the melastomataceae family
Anerincleistus is a genus of flowering plants belonging to the family Melastomataceae. Its native range is Tropical Asia. Species:
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