Wafer ash (Ptelea trifoliata)
Ptelea trifoliata
Western Herbalism
Western Herbalism

Wafer ash

Ptelea trifoliata

Also known as Hop tree, Wing seed, Shrubby trefoil, Stinking ash, Swamp dogwood (regional, misapplied), Ptelea, Swamp dogwood.

CoolingwarmingdryingTaste: BitterTaste: AromaticTaste: pungent

Ptelea trifoliata, commonly called hop tree or wafer ash, is a small tree or tall shrub native to eastern and central North America, in the same family as prickly ash and citrus. It bears distinctive winged, wafer-like fruits, from which its common names derive, and its root bark was the part valued in nineteenth century Eclectic medicine. Eclectic physicians prized it as a clean, intensely bitter tonic, sometimes described as a mild substitute for quinine-based bitters in weak, convalescent patients. The dried fruit has historically been used in home brewing as a hop substitute, giving rise to the name hop tree.

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Actions

Bitter tonicDigestive stimulantCarminativeMild antiperiodicAppetite stimulantConvalescent restorativeMild cholagogue

Indications what the tradition reached for it in

Specific indications

Weak, atonic digestion with loss of appetite and low vitality after acute illness, calling for a clean, non-astringent bitter

Sluggish, torpid digestion with a coated tongue and dull, unenthusiastic appetite, unresponsive to milder bitters

Asthmatic dyspnea; chronic diseases with constriction of chest and short breathing.

Safety

The record lists 3 contraindications; open the plate in the library to read them in full.

In practice

Hop tree root bark was reached for by Eclectic practitioners as a gentle, non-astringent bitter tonic for patients whose digestion had become weak and appetite poor, particularly during convalescence from fevers or prolonged illness.

Dosing as the sources wrote it

PreparationAs writtenMetric
Tincture (1:5, fresh root bark, 45-60%)1-2 mL three times daily before meals1-2 mL
Fluid extract (1:1)0.3-1 mL three times daily before meals0.3-1 mL
Dose of the powder, ten to fifteen grains three times a day648-972 mg
Dose, on sugar, one or two drops0.04-0.04 mL
Specific Medicine PteleaDose, from one to twenty minims.0.06-1.23 mL
Dose, 5 to 30 grains.324-1944 mg

Doses are reproduced from the sources for practitioners and are not a recommendation for any person.

From the sources

Overview. Ptelea trifoliata, commonly called hop tree or wafer ash, is a small tree or tall shrub native to eastern and central North America, in the same family as prickly ash and citrus. It bears distinctive winged, wafer-like fruits, from which its common names derive, and its root bark was the part valued in nineteenth century Eclectic medicine. Eclectic physicians prized it as a clean, intensely bitter tonic, sometimes described as a mild substitute for quinine-based bitters in weak, convalescent patients. The dried fruit has historically been used in home brewing as a hop substitute, giving rise to the name hop tree.

Clinical Notes. Hop tree root bark was reached for by Eclectic practitioners as a gentle, non-astringent bitter tonic for patients whose digestion had become weak and appetite poor, particularly during convalescence from fevers or prolonged illness.

Action and Therapy. Ptelea is regarded by some as second only to hydrastis as a tonic. It acts as a sedative to irritated membranes, and is said to be tolerated by the stomach when other tonics might aggravate. The field in which it has been mostly used is in convalescence from fevers, debility resulting from gastro-intestinal irritation, and in asthmatic seizures accompanied by a sense of constriction in the thorax.

Therapy. The agent is a mild tonic, exercising a direct influence upon the stomach and digestive apparatus, correcting certain faults of gastric secretion, overcoming dyspepsia and improving the appetite. It may be given to good advantage with other stomachic tonics and iron. It corrects atonic diarrhea and is of benefit in dysentery, its pungent properties and sufficient astringency renders it of benefit in mild cases. In full doses it acts upon the skin as a diaphoretic. It has been given in lung troubles, but we have other active remedies which produce more gratifying results.

Drawn from Cook's Physio-Medical Dispensatory; Scudder's Specific Medication and Specific Medicines; King's American Dispensatory, 18th edition (Felter and Lloyd); Ellingwood's American Materia Medica, Therapeutics and Pharmacognosy, and the Bountiful Herbs editorial.

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