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Ledol is a poisonous sesquiterpene that can cause cramps, paralysis, and delirium.[citation needed] Caucasian peasants used Rhododendron plants for these effects in shamanistic rituals.[1]
Sources
Ledol is found in labrador tea,[2] an herbal tea (not a true tea) made from three closely related species:
- Rhododendron tomentosum – Northern Labrador tea, previously Ledum palustre
- Rhododendron groenlandicum – Bog Labrador tea, previously Ledum groenlandicum or Ledum latifolium
- Rhododendron columbianum – Western Labrador tea, or trapper's tea, previously Ledum glandulosum
Ledol is also found in the essential oil of priprioca at a concentration of around 4%.[3]
Ledol is also found to varying concentrations in the following plants:[4]
- Cistus ladaniferus
- Corymbia maculata
- Eucalyptus albens
- Eucalyptus astringens
- Eucalyptus blakelyi
- Eucalyptus bosistoana
- Eucalyptus botryoides
- Eucalyptus camaldulensis
- Eucalyptus citriodora
- Eucalyptus cladocalyx
- Eucalyptus dealbata
- Eucalyptus diversicolor
- Eucalyptus globulus
- Eucalyptus maidenii
- Eucalyptus melliodora
- Eucalyptus moluccana
- Eucalyptus nova-anglica
- Eucalyptus occidentalis
- Eucalyptus oviformis
- Eucalyptus paniculata
- Eucalyptus polyanthemos
- Eucalyptus punctata
- Eucalyptus saligna
- Eucalyptus siderophloia
- Eucalyptus sideroxylon
- Eucalyptus tereticornis
- Humulus lupulus
- Hyssopus officinalis
- Mentha × piperita
- Panax quinquefolius
- Peumus boldus
- Pimenta dioica
- Piper cubeba
- Salvia officinalis
- Satureja obovata
- Syzygium aromaticum
- Teucrium arduini
- Teucrium gnaphalodes
- Teucrium polium
- Valeriana officinalis
- Vitex agnus-castus
References
- ^ Andrews, Steve; Rindsberg, Katrina (April 2001). Herbs of the Northern Shaman: A Guide to Mind-Altering Plants of the Northern Hemisphere. Loompanics Unlimited. ISBN 1-55950-211-8. OCLC 780276732.
- ^ Dampc, Anna; Luczkiewicz, Maria (2015). "Labrador tea – the aromatic beverage and spice: A review of origin, processing and safety". Journal of the Science of Food and Agriculture. 95 (8): 1577–1583. Bibcode:2015JSFA...95.1577D. doi:10.1002/jsfa.6889. PMID 25156477.
- ^ Azambuja, Wagner. "Priprioca Essential Oil - Óleos Essenciais O Guia do Brasil". Óleos Essenciais. Brazil. Archived from the original on 13 September 2017. Retrieved 12 September 2017.
- ^ Duke, James A. (1992). "Handbook of phytochemical constituents of GRAS herbs and other economic plants". Department of Agriculture, Agricultural Research Service. 1992-2016. Dr. Duke's Phytochemical and Ethnobotanical Databases. Boca Raton, FL: CRC Press. doi:10.15482/USDA.ADC/1239279. Archived from the original on 2021-09-30. Retrieved 2017-09-13.
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