Contraction. - Bry.

Bryonia alba and dioica. Nat. ord., Cucurbitaceae.

Synonyms. - Vitis alba, Bryonia vera.

Fig. - Flora Horn., pl. 12.

White Bryony, Wild Hops. For. names: German, Zaunrube; French, Coulevre; Italian, Vita bianca; Spanish, Neuza alba.

Habitat. - B. alba, common in Germany and France; B. dioica, common in England, in hedges and thickets.

Flowering time. - June and July.

Part employed. - The fresh root.

Characters. - A large, fleshy, succulent, branched root-stock, of yellowish-white colour, with circular wrinkles; having an acrid, bitter, disagreeable taste and peculiar odour. Care must be taken not to mistake the root of the Tamus Communis for this, as has frequently happened. For security's sake the root should never be gathered without the bine attached, so that it may be identified.

Time for collecting. - Before the plant flowers, and in October.

N.B. - After much consideration, the two species of Bryonia are recorded as officinal, since, while it is no doubt true that Hahnemann used Bryonia alba, yet a large quantity of Bry. dioica has been prepared and used in this country, and the action is so similar to the alba that few, if any, practitioners can detect the difference.

As the provings were made from the Bryonia alba, it is recommended that the attenuations be made from it.

Preparation. - Tincture, corresponding in alcoholic strength with proof spirit.

Reference to Horn. Proving. - R. A. M. L., ii. (Est. Zeitsch. f. Horn., ii.

Proper forms for dispensing. - φ and lx, Tincture only. 1 and upwards, Tincture, Pilules, or Globules.

Average loss of moisture: In June, 81 per cent.; in October, 71 per cent.