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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Lamiids
Ordo: Gentianales

Familia: Gelsemiaceae
Genus: Gelsemium
Species: G. elegans – G. rankinii – G. sempervirens
Source(s) of checklist:

Gelsemium Juss. Gen. Pl. 150. (1789)

Type species: Gelsemium sempervirens (L.) J. St.-Hil. Expos. Fam. Nat. 1(2): 338–340. (1805)


Ellisiana Garden, L. Corresp. 1: 364, 378 (1821)
Gardenia Ellis., L. Corresp. 1: 130 (1821)
Jeffersonia Brick., Med. Repos. N. York, 1: 555 (1800)
Leptopteris Blume, Mus. Bot. Lugd. Bat. 1: 240. t. 34 (1850) nec C. Presl (1845)
Medicia Gardner & Champion, Hook. Kew Journ. 1: 324 (1849)


Jussieu, A.L. de 1789. Genera plantarum, secundum ordines naturales disposita juxta methodum in Horto Regio Parisiensi exaratam. 498 pp. Paris: Herissant et Theophile Barrois. BHL Reference page. : 150.


Govaerts, R. et al. 2021. Gelsemium in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2021 Jul 10. Reference page.
Govaerts, R. et al. 2021. Gelsemium in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2021 Jul 10. Reference page.
International Plant Names Index. 2021. Gelsemium. Published online. Accessed: Jul 10 2021. 2021. Gelsemium. Missouri Botanical Garden. Published on the internet. Accessed: 2021 Jul 10.
Hassler, M. 2021. Gelsemium. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2021. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: 2021 Jul 10. Reference page.
Hassler, M. 2021. World Plants. Synonymic Checklist and Distribution of the World Flora. . Gelsemium. Accessed: 10 Jul 2021.
Gelsemium Juss. – Taxon details on Integrated Taxonomic Information System (ITIS).
Gelsemium – Taxon details on National Center for Biotechnology Information (NCBI).
EOL: Gelsemium
USDA, ARS, Germplasm Resources Information Network. Gelsemium in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 2016-04-18.

Vernacular names
日本語: ゲルセミウム属
한국어: 겔세미움과
русский: Гельземиевые
svenska: Giftjasminsväxter
Tiếng Việt: Họ Hoàng đằng
中文: 胡蔓藤科

Gelsemium is an Asian and North American genus of flowering plants belonging to family Gelsemiaceae. The genus contains three species of shrubs to straggling or twining climbers. Two species are native to North America, and one to China and Southeast Asia.[2]

Carl Linnaeus first classified G. sempervirens as Bignonia sempervirens in 1753; Antoine Laurent de Jussieu created a new genus for this species in 1789. Gelsemium is a Latinized form of the Italian word for jasmine, gelsomino. G. elegans has the common name "heartbreak grass".[3]


All three species of this genus are poisonous.
Active components

The active components of gelsemium are the alkaloids, which are present in a concentration of about 0.5%. These consist primarily of gelsemine (a highly toxic compound related to strychnine), with lesser amounts of related compounds (gelsemicine, gelsedine, etc). Other compounds found in the plant include scopoletin (also called gelsemic acid), a small amount of volatile oil, fatty acid and tannins.[4]

Gelsemium has been shown to contain methoxyindoles.[5][6]
Medicinal uses

As late as 1906, a drug called Gelsemium, made from the rhizome and rootlets of Gelsemium sempervirens, was used in the treatment of facial and other neuralgias. It also proved valuable in some cases of malarial fever, and was occasionally used as a cardiac depressant and in spasmodic affections, but was inferior for this purpose to other remedies.[7]
Species Common names Areal Characteristics Image
Gelsemium elegans Heartbreak grass Native to India,, Indonesia, Laos, Malaysia, northern Myanmar, Taiwan, northern Thailand, Vietnam, and the Chinese provinces of Fujian, Guangdong, Guangxi, Guizhou, Hainan, Hunan, Jiangxi, Yunnan, and Zhejiang Twining climber, found in scrubby forests and thickets from 200–2000 meters elevation
Gelsemium rankinii Rankin's jessamine, swamp jessamine, Rankin's trumpetflower Native to southeastern United States Swamp Jessamine (993733505).jpg
Gelsemium sempervirens Yellow jessamine, Carolina jessamine, evening trumpetflower Native to southeastern and south-central United States from Virginia to Texas and south through Mexico to Central America It is commonly grown as a garden flower worldwide

Alleged poisoning victims

On 23 December 2011, Long Liyuan, a Chinese billionaire, died after eating cat stew that was allegedly poisoned with Gelsemium elegans.[8][9]
On 10 November 2012, Alexander Perepilichny died outside his UK home, after warning of Kremlin death threats he received related to the Magnitsky affair. A lawyer for the deceased's life insurance company told a pre-inquest hearing that toxicology reports had identified traces of Gelsemium in his body.[10][11] However, this was later denied by an expert at the Royal Botanical Gardens, Kew, the Police and coroner concluded that he died of natural causes.[12]

Symptoms of poisoning

The poison affects the vision and respiration.[13] Symptoms can appear almost immediately.[14]
Arthur Conan Doyle's experiment

Sir Arthur Conan Doyle, writer of the Sherlock Holmes stories, once administered himself a small amount of gelsemium and kept increasing the amount every day until he could no longer stand the ill effects. In a letter written by him to the British Medical Journal on 20 September 1879, he described that he had persistent diarrhea, severe frontal headache, and great depression, and therefore stopped his self-experimentation at 200 minims.[15][16][17]
A rare case of Gelsemium addiction

In his classic early 20th century work on psychotropic drugs Phantastica, German pharmacologist Louis Lewin recounts the curious and tragic case - seemingly unique in the literature - of an individual who became addicted (in a manner far more often associated with opiates) to a Gelsemium preparation:

during a severe attack of rheumatism a man took a large quantity of an alcoholic tincture of Gelsemium sempervirens a plant which is liable to act on the brain and the medulla oblongata. Noticing an appreciable result he continued to take it, and finally became a slave to the drug. He gradually augmented the quantity, and reached 30 gr. of the tincture in one dose. Slowly he became pale, agitated, and discontented. He wasted away. Hallucination set in, and his state grew worse until disorders of the intelligence appeared. As he continued to increase the doses he fell into idiocy and died in a state of mental confusion.[18]


1897 illustration from Franz Eugen Köhler, Köhler's Medizinal-Pflanzen
Ornduff, R (1970). "The systematics and breeding system of Gelsemium (Loganiceae)". Journal of the Arnold Arboretum. 51 (1): 1–17. doi:10.5962/bhl.part.7036. includes description, drawings, distribution map, etc.
Lewis, Leo (2012-01-04). "A purrfect murder? Tycoon killed by poisoned cat stew". The Times. Retrieved 2012-01-04. "...the fatal dose of Gelsemium elegans, a highly poisonous plant known as 'heartbreak grass'"
Drugs, Gelsemium
Wenkert, Ernest (1962). "Gelsedine1". The Journal of Organic Chemistry. 27 (12): 4123–4126. doi:10.1021/jo01059a001.
Przybylska, M. (1962). "The crystal structure of (−)-N-methyl-gelsemicine hydriodide". Acta Crystallographica. 15 (4): 301–309. doi:10.1107/S0365110X6200078X.
Gilman, D. C.; Peck, H. T.; Colby, F. M., eds. (1906). "Gelsemium" . New International Encyclopedia (1st ed.). New York: Dodd, Mead.
"China tycoon "ate poisoned cat-meat stew"". BBC News. 4 January 2012.
"Police: Poisoned cat meat killed China tycoon". Time. 3 January 2012. Archived from the original on 9 February 2012. "[...] is suspected of poisoning the hotpot with the herb Gelsemium elegans, according to a statement on the microblog of the investigating police."
"Russian whistleblower had traces of rare poison in stomach, plant expert says". The Guardian. London, UK.
"Alexander Perepilichny: Rare Chinese poison found in stomach of Russian whistleblower". ABC News. 20 May 2015. Retrieved 2 June 2015.
"[Alexander Perepilichnyy: The questions raised by Russian whistleblower inquest]". BBC News.
"Gelsemium". Retrieved 2 June 2015.
Devlin, Hannah (18 May 2015). "Gelsemium: the plant that can cause convulsions, paralysis and asphyxia". The Guardian. Retrieved 2 June 2015.
Doyle, Arthur Conan (1986). Gibson, J.M.; Green, R.L. (eds.). Letters to the Press. University of Iowa Press.
Doyle, Arthur Conan (20 September 1879). "Arthur Conan Doyle takes it to the limit". British Medical Journal. BMJ Publishing Group Ltd. Retrieved 2 February 2014.
Doyle, Arthur Conan (20 September 1879). "Letters, Notes, and Answers to Correspondents". British Medical Journal. BMJ Publishing Group Ltd. Retrieved 2 February 2014.
Lewin L. Phantastica. Die betäubenden und erregenden Genussmittel. Für Ärzte und Nichtärzte (trans. Phantastica: Narcotic and Stimulating Drugs. For Doctors and Non-doctors) Berlin: Verlag von Georg Stilke, 1924.

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