Coltsfoot or Butterbur Petasites

Coltsfoot or Butterbur Petasites

From Wikipedia, the free encyclopedia


Petasites is a genus of flowering plants in the sunflower family, Asteraceae, that are commonly referred to as butterburs and coltsfoots. They are perennial plants with thick, creeping underground rhizomes and large rhubarb-like leaves during the growing season.

Scientific classification:

Kingdom:     Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order:          Asterales
Family:         Asteraceae
Tribe:           Senecioneae
Genus:         Petasites
Species:       P. frigidus
Binomial name: Petasites frigidus

Petasites frigidus, the Arctic sweet coltsfoot or Arctic butterbur, is a species of Petasites native to Arctic to cool temperate regions of the Northern Hemisphere in northern Europe, northern Asia and northern North America. It is a herbaceous perennial plant producing flowering stems in early spring, and large leaves through the summer. The upright flowering stems are 10–20 cm tall, and bear only 5-12 inflorescences, yellowish-white to pink in colour. The leaves are rounded, 15–20 cm broad, with a deeply cleft base and shallowly lobed margin, and rise directly from the underground rootstock. The underside of the leaves is covered with matted, woolly fuzz. It grows in moist shaded ground, preferring stream banks and seeping ground of cut-banks.

Uses:

The leaf stalks and flower stems (with flowers) are edible and can be used as a vegetable dish. A salt-substitute can also be made by drying and then burning the leaves. This black, powdery substance will provide a salty taste.

Medicinal uses:

Butterbur has been used for over 2000 years to treat a variety of ailments including fever, lung disease, spasms, and pain. Currently, butterbur extract is used for migraine prevention and treatment of allergic rhinitis, which have the most evidence for its effectiveness. Some butterbur species contain the chemicals petasin and isopetasin which are believed to have potential benefits in treating migraines. High concentrations of petasin occur in both butterbur root and leaves, with the leaves containing lower levels of the toxic chemical. Butterbur extracts have been reported to be effective in reducing frequency and severity of migraine headaches. Several double-blind studies have shown that high doses of Petasites hybridus” extract, containing petasin and/or isopetasin, are effective both in preventing and in relieving migraine, with the best results in groups taking the higher dose of the supplement. Although mainly well-tolerated, the adverse effects of butterbur reported in clinical trials include mainly gastrointestinal problems, such as nausea, flatulence, and belching. The American Academy of Neurology and American Headache Society now endorse butterbur for preventing migraine headaches with a Level A recommendation (based on at least two strong clinical trials). Furthermore, the Canadian Headache Society supports a strong recommendation for use of butterbur in prevention of migraines for select patients based on their clinical features and co-existing disorders.

Additionally, a study showed butterbur extract to be an effective treatment for hay fever without the sedative effect of the antihistamine cetirizine, if taken four times daily. Butterbur was also shown to be comparably effective as fexofenadine when compared to placebo for reducing symptoms of allergic rhinitis


Bibliographic details for “Petasites”
Page name: Petasites
Author: Wikipedia contributors
Publisher: Wikipedia, The Free Encyclopedia.
Date of last revision: 18 October 2017 00:36 UTC
Date retrieved: 31 October 2017 20:19 UTC
Permanent link: https://en.wikipedia.org/w/index.php?title=Petasites&oldid=805846088
Primary contributors: Revision history statistics
Page Version ID: 805846088

Bibliographic details for “Petasites frigidus”
Page name: Petasites frigidus
Author: Wikipedia contributors
Publisher: Wikipedia, The Free Encyclopedia.
Date of last revision: 27 September 2017 22:01 UTC
Date retrieved: 31 October 2017 20:18 UTC
Permanent link: https://en.wikipedia.org/w/index.php?title=Petasites_frigidus&oldid=802700031
Primary contributors: Revision history statistics
Page Version ID: 802700031