Peucedanum ostruthium, Imperatoria ostruthium, Masterwort

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Article Summary

Peucedanum ostruthium or Imperatoria ostruthium popularly known as Masterwort is a species of flowering plant belonging to the celery, carrot or parsley family (Apiaceae). It is native to the mountains of Central and Southern Europe, including the Carpathians, Alps, northern Apennines, Massif Central and isolated occurrences in the Iberian Peninsula. It has, however, been widely introduced and cultivated and its native range is therefore not...

Key Takeaways

  • This article explains Masterwort Facts in simple medical language.
  • This article explains Masterwort Scientific Classification in simple medical language.
  • This article explains Plant Description in simple medical language.
  • This article explains Traditional uses and benefits of Masterwort in simple medical language.
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Definition

Peucedanum ostruthium or Imperatoria ostruthium popularly known as Masterwort is a species of flowering plant belonging to the celery, carrot or parsley family (Apiaceae). It is native to the mountains of Central and Southern Europe, including the Carpathians, Alps, northern Apennines, Massif Central and isolated occurrences in the Iberian Peninsula. It has, however, been widely introduced and cultivated and its native range is therefore not entirely clear. It can be a beautiful plant of any decorative or herbal garden boasting white, pink or blue flowers. Masterwort, Imperatoria, hogfennel, Madnep, Cow Cabbage, Imperatoria, Cow parsnip, Youthwort, Hogweed, Madnep, Heracleum lanatum, Heracleum maximum, and also Wooly parsnip are some of the well-known common names of the plant. The Latin name of the genus Peucedanum means “bitter” and refers to the plant’s content of bitter substances.

Masterwort Facts

Name Masterwort
Scientific Name Imperatoria ostruthium
Native Mountains of Central and Southern Europe, including the Carpathians, Alps, northern Apennines, Massif Central and isolated occurrences in the Iberian Peninsula
Common Names Masterwort, Imperatoria, hogfennel , Madnep, Cow Cabbage, Imperatoria, Cow parsnip, Youthwort, Hogweed, Madnep, Heracleum lanatum, Heracleum maximum and also Wooly parsnip
Name in Other Languages Catalan: Imperatorial, salsufragi
Croatian: Boskva
Czech: Všedobr horský, Všeliek hojivý, smldník všedobr,
Danish: Almindelig Grådodder, Hvid Kalkkarse, mesterrod
Dutch: Meesterwortel
English: Masterwort, Imperatoria, hogfennel
Esperanto: Pufa peŭcedano
Finnish: Hietakilpiruoho, Kaukasianpitkäpalko, Rohtosuoputki
French: Impératoire, Peucédan impératoire, Peucédan ostruthium, autruche, benjoin, benjoin français, impératoire officinale, ostruche,
German: Meisterwurz, Kaiserwurz , Astrang, echte Meisterwurz, Magistranz,  Ostruz
Hungarian: Mestergyökér
Italian: Erba renna, Elafobosco, Imperatoria vera, elafobosco erba renna, imperatoria vera, elafobosco, imperatorial, imperatoria commune
Latvian: Meistarsakne
Nederlands: Meesterwortel
Norwegian: Grådodre, Hageskrinneblom, Meisterrot
Persian: پوسدانوم استراثیوم
Polish: Gorysz miarz
Portuguese:  Imperatória
Russian: Gorichnik nasturtsiyevyy (Горичник настурциевый)
Slovak: Všeliek hojivý
Slovene: Jaščarica silj
Spanish: Imperatorial, Imperatoria romana, servato
Swedish: Fagertrav, Gotlandstrav, Grustrav, Grådådra,  Mästerrot
Welsh: Ffenigl-y-moch gwridog
Plant Growth Habit Clump-forming or slowly stoloniferous perennial herb
Growing Climates Woodland, damp fields, river banks and mountain meadows
Soil Grow best in a rich, organic woodland soil
Plant Size 2 to 3 feet tall when in flower, but only half that when in leaf
Leaf Leaves are rich green with a palmate arrangement and five prominent lobes, each of which is cut or incised terminally
Flowering season June to August
Flower Flower heads are 1 to 1 ½ inch wide and produced in considerable numbers. Bloom color of the species is white, but in most of the clones now being marketed the flowers are pink, maroon or red
Fruit Shape & Size Round fruit with broad, pale yellow winged edge
Fruit Color Yellowish brown
Flavor/Aroma Strong celery-like smell
Taste Pungent
Plant Parts Used Root, seeds
Available Forms Tea, liqueurs, wine, fumigation, tincture or incense

Masterwort Scientific Classification

Scientific Name: Imperatoria ostruthium

Rank Scientific Name & (Common Name)
Kingdom Plantae (Plants)
Subkingdom Tracheobionta (Vascular plants)
Infrakingdom Streptophyta  (land plants)
Super Division Spermatophyta (Seed plants)
Division Magnoliophyta (Flowering plants)
Class Magnoliopsida (Dicotyledons)
Sub Class Rosidae
Order Apiales
Family Apiaceae ⁄ Umbelliferae (Carrot family)
Genus Peucedanum L. (Peucedanum)
Species Peucedanum ostruthium (L.) W.D.J. Koch (masterwort)
Synonyms
  • Angelica officinalis Bernh.
  • Angelica ostruthium (L.) Koso-Pol.
  • Angelica ostruthium (L.) Lag.
  • Imperatoria aromatica Salisb.
  • Imperatoria major Gray
  • Imperatoria major Lam.
  • Imperatoria ostruthium var. triternata DC., 1830
  • Imperatoria trilobata Gilib.
  • Imperatoria triternata Viv.
  • Imperatoria triternata Viv. ex DC.
  • Imperatorium ostruthium L., 1753
  • Ostruthium officinale Link
  • Peucedanum imperatoides Link
  • Peucedanum imperatoria Endl., 1842
  • Peucedanum ostruthium (L.) Koch
  • Peucedanum ostruthium var. triternatum (DC.) Rouy & E.G.Camus, 1901
  • Selinum imperataria Crantz
  • Selinum imperatoria Crantz
  • Selinum ostruthium (L.) Wallr

Plant Description

Masterwort, a common name shared by at least two members of the carrot family, is a clump-forming or slowly stoloniferous perennial herb that normally grows about 2 to 3 feet tall when in flower, but only half that when in leaf with a knobby rhizome (sometimes with runners) containing a milky sap. The plant is found growing in woodland, damp fields, river banks and mountain meadows. It grows best in a rich, organic woodland soil.  Leaves are rich green with a palmate arrangement and five prominent lobes, each of which is cut or incised terminally.

Flower & Fruits

Flowers emerge in late spring on upright, branched panicles and appear sporadically through the summer. The flowers are technically an umbel but very different than Queen Anne’s lace and other members of the parsley family, because in Astrantia each bloom is subtended by a broad, papery bract giving the bloom heads an almost daisy-like look. Flower heads are 1 to 1 ½ inch wide and produced in considerable numbers. Bloom color of the species is white, but in most of the clones now being marketed the flowers are pink, maroon or red. Flowering normally takes place in between June to August.

The flowers of masterwort are good for fresh or dried arrangements. They are grown commercially as cut flowers, making a good, long-lasting bloom because the papery bracts persist longer than the petals of many blossoms. They are recommended for use as a stream side planting, or as an informal ground cover in open woodlands or in the mixed perennial border.

Fertile flowers are followed by round fruit that are yellowish-brown with broad, pale yellow winged edge.t

Traditional uses and benefits of Masterwort

  • Masterwort is used to treat gas problems, , fevers, colds, colic, spasms, water retention, palsy, dropsy, gastrointestinal tract, , flu, colds, cardiovascular system, apoplexy, menstrual conditions as well as conditions.
  • Masterwort is little used in modern herbalism, but it may well be an herb that bears further investigation.
  • It was held in high regard in the middle Ages where it was particularly appreciated for its ability to resolve all in the body and stimulate the flow of urine and menstruation.
  • It was also used in treating rheumatic conditions, , and bladder stones, water retention and wounds.
  • Root is antispasmodic, aromatic, bitter, strongly carminative, diaphoretic, digestive, diuretic, emmenagogue, expectorant, febrifuge, stimulant and stomachic.
  • It is use in the treatment of asthma, and menstrual complaints.
  • An infusion helps to relieve .
  • An essential oil from the plant has a euphoric and odontalgic effect.
  • It is used externally, it relieves skin irritation.
  • When used externally, the plant or the extracted essential oil can cause an allergic reaction to sunlight.
  • Homeopathic remedy is made from the roots.
  • Its roots and leaves have been used in the traditional Austrian medicine internally and externally for treatment of disorders of the gastrointestinal tract, skin, respiratory tract, cardiovascular system, infections, , flu and colds.
  • It is known that the root was used for colic .
  • Leaves were used as wraps placed on slow-healing wounds.
  • It is stated that the root could be crushed and added to wine and drunk as a remedy for disease, , , and leprosy.
  • It was considered a panacea of sorts, treatment for high fevers, as an expectorant and diuretic agent.
  • It also seems to have been highly regarded as sweat-inducing and menstruation promoting agent.
  • Masterwort has also been used traditionally as a natural treatment for poisoning, kidney stones, , stomach cramps, flatulence and .
  • Masterwort has been used more in veterinary herbal medicine than in folk medicine.
  • Masterwort is an aromatic bitter herb that is regarded to have a warming effect on the central areas of the body.
  • The herb is mostly used to increase appetite and as a tonic for the stomach.
  • It increases the secretion of the digestive fluids, which in turn can stimulate digestion.
  • The herb is supposed to lessen gas formation in the intestines and thus reduce the feeling of .
  • It also may reduce and loosen cramps in the stomach and bowels.
  • Masterwort is occasionally also used to relieve painful menstruation and for respiratory diseases accompanied by mucus formation.
  • Herb consists of several active substances which are thought to contribute to the and anti-convulsant effects it has on diseases of the respiratory system and gastrointestinal tract.
  • The tea can help to cure migraine headaches as well as stimulating the immune system.
  • It is an excellent medicinal herb to treat , , infections, and wounds.
  • It is a good remedy to rid the stomach of gas.
  • It is also used to wash sores, ulcers and wounds.
  • Decoction of Masterwort root stock or seed is used for cold, fever, asthma, dyspepsia, colic, dropsy, , epilepsy, palsy, apoplexy, expels gas from the bowels, and increases the flow of urine, gravel in , scanty menstruation with painful cramps and spasmodic problems.
  • Externally it is used as wash for wounds, sores, bruises and ulcers.

Culinary Uses

  • Leaves are used as a potherb or as a flavoring.
  • The aromatic roots can be used as a flavoring.
  • A particularly popular drink is made from the fermented roots.
  • Whole plant can be used as a spice, but the leaves and the flowers have a far milder flavor than the roots.
  • Masterwort can be used in the same way as lovage in soups.
  • Leaves can also be used in small quantities in salads to add a sprinkle of green color.
  • Roots and seeds can be dried and powdered and used as a kind of pepper substitute.
  • The root can be used as a flavoring agent in snaps and liqueurs.

Other Facts

  • Masterwort is used as flavoring for various liqueurs and bitters.
  • The herb has been used as a remedy for sick calves and for promoting milk production in cows.
  • It was used as a treatment for sore udders of cows.
  • In Sweden, there have been reports that the plant has been used to treat the lack of appetite in cows and horses.

Precautions

  • Skin contact with the sap of this plant is said to cause photo-sensitivity and/or in some people.
  • It is also said to contain the alleged ‘psychotroph’ myristicine.
  • Do no use if pregnant.
  • When applied to skin, may cause photo-sensitivity to skin.
  • In high doses, the herb is considered to be slightly toxic.
  • If the herb is applied to the skin, allergic reactions may occur if the skin is exposed to sunlight at the same time, due to the furano-coumarins.

 


References


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Safety note: This is not a prescription or diagnosis. For severe symptoms, pregnancy danger signs, children with serious illness, chest pain, breathing difficulty, stroke-like weakness, or major injury, seek urgent care.

Which doctor may help?

Start with a registered doctor or the nearest qualified health center.

What to tell the doctor

  • Write when the problem started and how it changed.
  • Bring old prescriptions, investigation reports, and current medicines.
  • Write allergies, pregnancy status, diabetes, kidney/liver disease, and major past illnesses.
  • Bring one family member if the patient is weak, elderly, confused, or a child.

Questions to ask

  • What is the most likely cause of my symptoms?
  • Which danger signs mean I should go to hospital quickly?
  • Which tests are necessary now, and which can wait?
  • How should I take medicines safely and what side effects should I watch for?
  • When should I come for follow-up?

Tests to discuss

  • Vital signs: temperature, pulse, blood pressure, oxygen saturation
  • Basic physical examination by a clinician
  • CBC, urine test, blood sugar, or imaging only when clinically needed

Avoid these mistakes

  • Do not use antibiotics, steroid tablets/injections, or strong painkillers without proper medical advice.
  • Do not hide pregnancy, kidney disease, ulcer, allergy, or blood thinner use.
  • Do not delay emergency care when danger signs are present.

Medicine safety and first-aid guide

This section is for patient education only. It does not replace a doctor, pharmacist, or emergency care.

Safe first steps

  • Avoid heavy lifting, sudden bending, and prolonged bed rest.
  • Use comfortable posture and gentle movement as tolerated.
  • Discuss physiotherapy, X-ray, or MRI only when clinically needed.

OTC medicine safety

  • For mild back pain, pain-relief medicine may be discussed with a doctor or pharmacist.
  • Avoid repeated painkiller use if you have kidney disease, stomach ulcer, uncontrolled blood pressure, or are taking blood thinners.

Avoid these mistakes

  • Do not start antibiotics without a proper medical decision.
  • Do not use steroid tablets or injections casually for quick relief.
  • Do not delay emergency care because of home remedies.

Get urgent help if

  • Back pain with leg weakness, numbness around private area, loss of urine/stool control, fever, cancer history, or major injury needs urgent care.
Medicine names, dose, and timing must be decided by a qualified clinician or pharmacist after checking age, pregnancy, allergy, other diseases, and current medicines.

For rural patients and family caregivers

Patient health record and symptom diary

Write your symptoms, medicines already taken, test results, and questions before visiting a doctor. This note stays on your device unless you print or copy it.

Doctor to discuss: Orthopedic / spine specialist, physical medicine doctor, or qualified clinician
Tests to discuss with doctor
  • Neurological examination for leg power, sensation, reflexes, and straight leg raise
  • X-ray only if injury, deformity, long-lasting pain, or doctor suspects bone problem
  • MRI discussion if severe nerve symptoms, weakness, bladder/bowel problem, or persistent symptoms
Questions to ask
  • What is the most likely cause of my symptoms?
  • Which warning signs mean I should go to emergency care?
  • Which tests are really needed now?
  • Which medicines are safe for my age, pregnancy status, allergy, kidney/liver/stomach condition, and current medicines?
  • Is physiotherapy, posture correction, or activity modification needed?

Emergency warning signs such as chest pain, severe breathing difficulty, sudden weakness, confusion, severe dehydration, major injury, or loss of bladder/bowel control need urgent medical care. Do not wait for online information.

Safe pathway to proper treatment

Care roadmap for: Peucedanum ostruthium, Imperatoria ostruthium, Masterwort

Use this simple roadmap to understand the next safe steps. It is educational and does not replace examination by a doctor.

Go to emergency care if you notice:
  • Severe or rapidly worsening symptoms
  • Breathing difficulty, chest pain, fainting, confusion, severe weakness, major injury, or severe dehydration
Doctor / service to discuss: Qualified healthcare provider; specialist depends on symptoms and examination.
  1. Step 1

    Check danger signs first

    If danger signs are present, seek emergency care and do not wait for online information.

  2. Step 2

    Record the symptom story

    Write when symptoms started, severity, medicines already taken, allergies, pregnancy status, and test results.

  3. Step 3

    Visit a qualified clinician

    A doctor, nurse, or qualified healthcare provider can examine you and decide which tests or treatment are needed.

  4. Step 4

    Do only useful tests

    Do tests after clinical assessment. Avoid unnecessary tests, random antibiotics, or repeated medicines without diagnosis.

  5. Step 5

    Follow up and return early if worse

    If symptoms worsen, new warning signs appear, or treatment is not helping, return for review quickly.

Rural patient practical tips
  • Take a written symptom diary and all previous prescriptions/test reports.
  • Do not hide medicines already taken, even herbal or over-the-counter medicines.
  • Ask which warning signs mean urgent referral to hospital.

This roadmap is for education. A real diagnosis and treatment plan requires history, examination, and clinical judgment.

Internal learning pathway

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