ear hawkweed FHP / Hieracium pilosella PPH

Ansm

Description

Pharmacopée française - Préparations homéopathiques - Mouse
07/06/2012

Sujets

• Anglais
• Médecine

Informations

• Publié par: ansm-pharmacopee-francaise
• Publié le: 07 juin 2012
• Nombre de lectures: 25
• Licence : En savoir +
  Paternité, pas d'utilisation commerciale, pas de modification
• Langue: English

Extrait

ANSM

MOUSE-EAR HAWKWEED FOR HOMOEOPATHIC PREPARATIONS HIERACIUM PILOSELLA FOR HOMOEOPATHIC PREPARATIONS Hieracium pilosella ad praeparationes homoeopathicas Other Latin name used in homoeopathy:Pilosella DEFINITION Fresh, whole, flowering plantHieracium pilosellaL. CHARACTERS Macroscopic and microscopic characters described under identification tests A and B. IDENTIFICATION A. Mouse-ear hawkweed is a small perennial plant, around 20 cm in height. The rootstock produces long, leafy, creeping stolons. The leaves are arranged in rosettes. They are oval- elongated, entire, obtuse. The underside is almost always woolly white or grey, due to an indument made up of small, star-shaped hairs. Both sides of the leaf are covered in long, bristle-like hairs. The flower-bearing stem is leafless and is almost always terminated by a single capitulum of yellow florets. The involucre is covered with blackish glandular trichomes. It becomes swollen and conical after the flowers have developed. No paleæ are present on the receptacle. The florets are all hermaphrodite, ligulate, with 5 teeth. The fruit are no more than 2.5 mm in length. They are denticulate at the base of the pappus. The pappus consists of a single row of very fine hairs of roughly equal length. B. Take a sample of epidermis from the underside of the leaf. Examine under a microscope, usingchloral hydrate solution R. The abaxial epidermis contains stomata and 2 types of covering trichomes: multi cellular, multi seriate covering trichomes, over 500 µm long, with bristles oriented towards the tip and covering trichomes about 200 µm long, with a bi- or tri-cellular base and single-celled tip with 4-12 branches arranged in the form of a star. TESTS Foreign matter(2.8.2): maximum 10 per cent, with no more than 8 per cent of mineral elements. Loss on drying(2.2.32): minimum 60.0 per cent, determined on 10.0 g of finely-cut drug, by drying in an oven at 105 °C for 2 h.

____________________________ The General Chapters and General Monographs of the European Pharmacopoeia and Preamble of the French Pharmacopoeia apply. F r e n c h P h a r m a c o p o e i a 2 0 0 2