Ammi majus, commonly called bishop's flower, false bishop's weed, laceflower, bullwort, etc., is a member of the carrot family Apiaceae. The plant, which has white lace-like flower clusters, has a large distribution through Southern Europe, North Africa and West and Central Asia, though it is hypothesized to be native to the Nile River Valley.
It is known in Arabic as hirz al-shayateen (حِرز الشياطين) or khella/khilla shaitani (خلة شیطانی),[4] meaning, respectively, ‘Devil’s Amulet/Refuge’ and ‘Devil’s Toothpick-weed.[citation needed]
The plant has also been introduced into China, where it is called da a min qin (Chinese: 大阿米芹) and cultivated in medicinal farms.[12][4]
The lower leaves are 1-2-pinnate, upper leaves 2(-3)-pinnate with serrate lobes.[10]
The inflorescence is compound umbel;[4] they are white umbrella-shaped flowers like those of Queen Anne's lace,[5] blooming June–July and fruiting July–August.[12]
Distribution
Considered indigenous to Egypt,[14] or parts of Europe and the Middle East/West Asia.[5][4] It is also found scattered in the British Isles, in North and Central Scotland,[10] widely distributed in the Mediterranean region (including Southern Europe[10] and North Africa[4]), as well as West Africa and Abyssinia.[14]
Uses
In Egypt around 2000 BC, the juice of Ammi majus was rubbed on patches of vitiligo[15] after which patients were encouraged to lie in the sun.[16] In the 13th century, vitiligo was treated with a tincture of honey and the powdered seeds of a plant called "aatrillal," which was abundant in the Nile River Valley. The plant has since been identified as A. majus,[17] but the trade name Aatrillal is still used today to refer to the yellowish-brown powder made from its seeds.
Ammi majus contains significant amounts of furanocoumarinsbergapten and xanthotoxin (also known as methoxsalen), two psoralen derivatives well known for their photosensitizing effects. Indeed, A. majus may well be the world's major source of methoxsalen.[16]
The practice of using Ammi majus to treat vitiligo implicitly acknowledges the hyperpigmentation effects caused by exposure to a photosensitizing agent (such as methoxsalen) followed by ultraviolet radiation. An excess of either the photosensitizing agent or subsequent UV exposure can lead to phytophotodermatitis,[16][18] a serious skin inflammation. Despite this danger, A. majus is cultivated for its furanocoumarins, which are still used for the treatment of skin disease, particularly the furanocoumarin xanthotoxin also known as "ammoidin" and by the brand name "Oxsoralen".[19][20]
^ abcdefghiQuattrocchi, Umberto (2012), "Ammi majus", CRC World Dictionary of Medicinal and Poisonous Plants: Common Names, Scientific Names, Eponyms, Synonyms, and Etymology (5 Volume Set), CRC Press, p. 244, ISBN978-1-4822-5064-0
^ abcdefghijWalliser, Jessica (2014), "Ammi majus", Attracting Beneficial Bugs to Your Garden: A Natural Approach to Pest Control, Portland, Oregon: Timber Press, pp. 114–115, ISBN9781604693881
^ abcTenenbaum, Frances (2003), "A. majus", Taylor's Encyclopedia of Garden Plants, Houghton Mifflin Harcourt, p. 25, ISBN9780618226443
^Lazarides, M.; Hince, B. (1993). CSIRO Handbook of Economic Plants of Australia. apud GRIN
^Erhardt, W. et al. (2002). Zander Handwörterbuch der Pflanzennamen: Dictionary of plants 17. Auflage apud GRIN
^Hanelt, P., ed. (2001). Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1–6. apud GRIN
^ abcdStace, Clive A. (1995) [1991]. New flora of the British Isles. 1st edition. Cambridge University Press. apud GRIN. 3rd edition (2010), p. 823
^Rehm, S. (1994). Multilingual dictionary of agronomic plants. apud GRIN
Niir Board of Consultants and Engineers (2006), "Chapter 22: Cultivation of Ammi Majus Linn, in India", Cultivation and Processing of Selected Medicinal Plants: Small Scale Medicinal plants Processing Projects, Starting a Medicinal plants Processing Business, How to Start a Medicinal plants Production Business, Medicinal plants Based Small Scale Industries Projects, new small scale ideas in ..., Delhi: Asia Pacific Business Press Inc., pp. 265–270, ISBN9788178330037