PDR for Herbal Medicines

HERBAL MONOGRAPHS PETASITES /585

Daily Dosage: The usual drug dosage is as follows: Tea—2

to 3 cups daily; Decoction—2 to 4 cups between meals;

Infusion—drink after meals for diarrhea; Wine—1 dessert-

spoonful after meals; a gargle or wash can be used externally

as needed.

ti Homeopathic Dosage: 5 drops, 1 tablet or 10 globules every

30 to 60 minutes (acute) or 1 to 3 times daily (chronic);

parenterally: 1 to 2 ml sc. acute: 3 times daily; chronic: once

a day (HAB1).

LITERATURE

Behninger C, Abel G, Schneider E, Vinca minor zeigt keine

antimitotische Eigenschaften. In: ZPT 13(2):35. 1992.

Gosset-Garnier J et al., (1965) Bull Soc Chim Franc 676.

Janot MM et al.. (1962) Bull Soc Chim Franc 1079.

Kaul JL, Trojanek (1966) Lloydia 29:25.

Neczypor W, PA 24:273. 1969.

Taylor, B, In: Taylor WI. Famsworth N (Ed.): The Vinca

Alkaloids, Marcel Dekker Inc.. New York. 1973.

Trunzler G, Phytodierapeutische Moglichkeiten bei Herz- und

arteriellen Gefa(3erkrankungen. In: ZPT 10(5): 147. 1989.

Vinpocetin. In: ZPT 14(1): 11. 1993.

Further information in:

m
m Hansel R, Keller K, Rimpler H, Schneider G (Hrsg.), Hagers

Handbuch der Pharmazeutischen Praxis, 5. Aufl., Bde 4-6

(Drogen): Springer Verlag Berlin, Heidelberg, New York. 1992-

1994.

Madaus G, Lehrbuch der Biologischen Arzneimittel, Bde 1-3,

Nachdruck, Georg Olms Verlag Hildesheim 1979.

Roth L, Daunderer M, Kormann K, Giftpflanzen, Pflanzengifte,

4. Aufl., Ecomed Fachverlag Landsberg Lech 1993.
   Steinegger E, Hansel R, Pharmakognosie. 5. Aufl., Springer
   Verlag Heidelberg-1992. ".. ^
   Teuscher E, Lindequist U, Biogene Gifte - Biologie, Chemie,
   Pharmakologie, 2. Aufl., Fischer Verlag Stuttgart 1994.
   Teuscher E, Biogene Arzneimittel, 5. Aufl., Wiss. Verlagsges.
   Stuttgart 1997.
   Wagner H, Wiesenauer M, Phytotherapie. Phytopharmaka und
   pflanzliche Homoopathika, Fischer-Verlag, Stuttgart, Jena, New
   York 1995.

Persicaria bistorta

See Bistort

Persicaria hydropiper

See Smartweed

Petasites

Petasites hybridus

DESCRIPTION

Medicinal Parts: The medicinal parts are the dried or fresh

leaves, the underground parts collected in autumn and dried,

the aerial parts collected toward the end of the flowering

season and the whole fresh plant.

Flower and Fruit: The reddish flowers appear before the

leaves, immediately after the snow has melted. They grow on

flowering shafts from the base of the plant. The shaft is erect,

thick *and has purplish scales. The ones bearing the male

flowers are 15 to 20 cm high and those bearing the female

flowers are 40 cm high. The capitula of the mainly male

flowers are initially in ovate, compact racemes. The flowers

are tubular campanulate. The female flowers have a thread-

like, tight tube and a bilabiate margin. The involucre is in 1

to 2 rows and is reddish. A prismatic fruit with a yellowish-

whitish pappus develops from the flower.

Leaves, Stern and Root: The short and gnarled rhizome lies

vertically or somewhat slanted in the ground. It is about 4 cm

thick, brownish and thickened at die nodes. The root creeps

and branches under the surface. The leaves are large, basal,

long-petioled and roundish with a deeply cordate base. It is

gray underneath and irregularly dentate.

Cfiaracteristics: Petasite has the largest leaves of all

indigenous flora and has an unpleasant smell.

Habitat: The species is found in northern Asia, Europe and

some areas of North America.

Production: Petasite consists of the whole plant of Petasites

hybridus. Petasite leaf consists of the leaves of Petasites

hybridis. The leaves are harvested before the end of the

flowering season and quickly dried. Only leaves that are the

size of the palm of the hand are picked, as these are said to

have a higher level of active principles than the larger leaves.

Petasite root consists of the dried underground parts of

Petasites hybridus. A distinction is made between andrody-

namic and gynodynamic varieties. The roots of the former

are dug up in autumn and of the latter in spring. After being

dug up they are washed and dried. If drugs containing

petasin are to be extracted, then cultivation must be carried

out under laboratory conditions.

Not to be Confused With: Other Petasite varieties and the

leaves of Adenostyles alliariae or Tussilago farfara.

Persea americana

See Avocado