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Species
Euphorbia tirucalli L.
IUCN
NCBI
EOL Text
Trees or shrubs, 2-6 m tall, dioecious, eventually forming trunk, 10-25 cm d.b.h.; bark rugose, gray or light. Stems green, succulent, very finely longitudinally striate. Leaves alternate, present only on new growth; stipules very small, caducous; petiole ± absent; leaf blade oblong-linear, 7-15 × 0.7-1.5 mm, base attenuate, margin entire, apex obtuse. Cyathia clustered at apex of branches, pedunculate, unisexual; involucral leaves minute, membranous, caducous; involucre turbinate, ca. 2 × 1.5 mm, shortly pubescent inside; glands 5, peltate-ovate or subrounded. Male flowers many, exserted from involucre. Female flower: ovary glabrous, exserted from involucre; styles connate below middle; stigma 2-lobed. Capsule 3-lobed, ca. 8 × 8 mm, smooth, sparsely pilose or glabrous. Seeds ovoid-globose, ca. 4 × 4 mm, smooth; caruncle small. Fl. and fr. Jul-Oct.
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Rights holder/Author | eFloras.org Copyright © Missouri Botanical Garden |
Source | http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=242321544 |
"Shrubs; branchlets terete, succulent, articulated. Leaves deciduous, 5-10 mm long, linear-oblong, base cuneate, apex obtuse to subacute. Cyathia clustered in the forks of the branchlets, shortly pedicelled, mostly female. Involucre campanulate; glands 3-5, transversely oval, peltate, lobes short, hairy; appendage 0. Male florets bracteolate, bracteoles laciniate at tip. Styles short, recurved, 2-lobed. Capsule 5 mm, globose, cocci compressed, velvety. Seeds ovoid, smooth."
Euphorbia tirucalli (also known as Aveloz, Firestick Plants, Indian Tree Spurge, Naked Lady, Pencil Tree, Pencil Cactus, Sticks on Fire or Milk Bush) (Sanskrit: सप्तला saptala, सातला satala,Marathi : sher-kandvel शेर-कांडवेल) is a shrub that grows in semi-arid tropical climates.
It has a wide distribution in Africa, being prominently present in northeastern, central and southern Africa. It may also be native in other parts of the continent as well as some surrounding islands and the Arabian peninsula and has been introduced to many other tropical regions. Its status in India is uncertain. It grows in dry areas, and is often used to feed cattle or as hedging.[1] It is well known in Sri Lanka where it is called Sinhala: නවහන්දි Navahandi[3] in Sinhalese.
E. tirucalli is a hydrocarbon plant that produces a poisonous latex which can, with little effort, be converted to the equivalent of gasoline. This led chemist Melvin Calvin to propose the exploitation of E. tirucalli for producing oil. This usage is particularly appealing because of the ability of E. tirucalli to grow on land that is not suitable for most other crops. Calvin estimated that 10 to 50 barrels of oil per acre was achievable. It has also been used in the production of rubber, but this was not very successful.[1]
Traditional medicine[edit]
E. tirucalli also has uses in traditional medicine in many cultures. It has been used for cancer, excrescence, tumors, and warts in such diverse places as Brazil, India, Indonesia[citation needed], and Malaysia.[4] It has also been used as for asthma, cough, earache, neuralgia, rheumatism, toothache, and warts in India and Malaysia.[5]
E. tirucalli has been promoted as an anticancer agent, but research shows that it suppresses the immune system, promotes tumor growth, and leads to the development of certain types of cancer.[6]Euphorbia tirucalli has also been associated with Burkitt's lymphoma and is thought to be a cofactor of the disease rather than a treatment.[7]
First aid[edit]
The milky latex from E. tirucalli is extremely irritating to the skin and mucosa and is toxic.[6] Contact with skin causes severe irritation, redness and a burning sensation; contact with the eyes may cause severe pain, and in some cases temporary blindness for several days. Symptoms may worsen over 12 hours.
For eye exposures, flush eyes with fresh, cool water for at least 15 minutes and repeat after a few minutes. Seek medical attention if there is no relief. Over-the-counter anti-histamines may provide relief for some people.
If swallowed, it may cause burning to the mouth, lips, and tongue. Deaths have been recorded from swallowing the latex, and anyone swallowing some should seek medical attention.
See also[edit]
Notes[edit]
- ^ a b c Haevermans (2004). Euphorbia tirucalli. 2006. IUCN Red List of Threatened Species. IUCN 2006. www.iucnredlist.org. Retrieved on 11 May 2006. Database entry includes justification for why this species is of least concern
- ^ "Euphorbia tirucalli L.". Germplasm Resources Information Network (GRIN) online database. Retrieved 16 March 2010.
- ^ sinhala-botany website
- ^ (Malay) Tumbuhan-tumbuhan perubatan herba, P.13
- ^ Euphorbia tirucalli L. in Handbook of Energy Crops, James Duke
- ^ a b "Aveloz". American Cancer Society.
- ^ van den Bosch C; Griffin BB, Gazembe B, Dziweni C, Kadzamira L (1993). "Are plant factors a missing link in the evolution of endemic Burkitt's lymphoma?". Br J Cancer 68 (6): 1232–1235. doi:10.1038/bjc.1993.510. PMC 1968631. PMID 8260378.
License | http://creativecommons.org/licenses/by-sa/3.0/ |
Rights holder/Author | Wikipedia |
Source | http://en.wikipedia.org/w/index.php?title=Euphorbia_tirucalli&oldid=630441268 |
Habit: Shrub/Small tree
Habitat and Ecology
Systems
- Terrestrial
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | International Union for Conservation of Nature and Natural Resources |
Source | http://www.iucnredlist.org/apps/redlist/details/44452 |
"Dry deciduous forests, also in the plains"
Cultivated and escaped. Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hainan, Hubei, Hunan, Jiangsu, Jiangxi, Sichuan, Taiwan, Yunnan, Zhejiang; also widely cultivated in greenhouses of C and N China [native to Africa (Angola); widely cultivated in tropical Asia].
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | eFloras.org Copyright © Missouri Botanical Garden |
Source | http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=242321544 |
Frequent
Flowering and fruiting: February-April