Viburnum prunifoliiiin. Linne, Lentago, Linne.

The dried bark, with not more than 5 p. c. of wood, foreign matter.

Habitat. United States, New York to'Florida, west to Mich., Kan., Tex.; dry soil.

Syn. Viburn. Prun., Black Haw, Viburnum, Sweet Viburnum, Sheep-berry, Boots, Stag-bush, Sweet-berry, Nanny-bush (plumb); Fr. Viburnum; Ger. Viburnum.

Vi-bur'num. L. the wayfaring tree, fr. vieo, viere, to tie - i. e., the pliability of its branches.

Pru-ni-fo'li-um. L. fr. prunum, a plum, + folium, a leaf, with a plum leaf - i. e., leaves resemble those of the plum.

Len-ta'go. L. Linnean name, possibly of Spanish origin, where first found growing.

Plants. - Tall handsome shrubs, 3-6 M. (10-20°) high; leaves 2.5-5 Cm. (1-2') long, 12-16 Mm. (1/2-2/3') wide, opposite, smooth, shining, oval, obtuse, serrate, petioles slightly margined; flowers May, perfect, white cymes, sessile; fruit oval, black drupe (berry), sweet, edible. Bark, in irregular, transversely curved, quilled pieces, 1.5-6 Cm. (3/5-2 2/5') long, .5-1.5 Mm. (1/50-1/16') thick, grayish-brown, or brownish-red where outer cork has scaled off, longitudinally wrinkled; inner surface reddish-brown, longitudinally striated; fracture short but uneven, showing in young or medium thick bark a dark brown cork, brownish-red outer cortex, and whitish inner cortex having numerous yellowish groups of sclerenchymatous tissues; odor slight; taste distinctly bitter, somewhat astringent. Powder, dark brown; microscopically - numerous stone cells, few bast-fibres, rosette aggregates of calcium oxalate, occasionally in crystal fibres. Solvents: hot water; diluted alcohol. Dose, 3ss-2 (2-8 Gm.).

Viburnum Prunifolium Viburnum Prunifolium 769Fig. 395.   Viburnum prunifolium, a, trunk bark, b, root bark.

Fig. 395. - Viburnum prunifolium, a, trunk bark, b, root bark.

Constituents. - Viburnin, Valeric acid, resin (brown, bitter) 2.5 p. c., tannin, sugar, oxalates, citrates, malates, ash 8-9 p. c - earthy carbonates and phosphates (calcium, magnesium, potassium).

Preparations. - 1. Extractum Viburni Prunifolii. Extract of Viburnum Prunifolium. (Syn., Ext. Viburn. Prun., Powdered Extract of Viburnum Prunifolium, Extract of Black Haw Bark; Fr. Extrait de Viburn (e)-um; Ger. Viburnumextrakt.)

Manufacture: Macerate, percolate 100 Gm. with diluted alcohol until exhausted, reclaim alcohol, evaporate residue in a dish at 70° C (158° F.) to soft extract, thoroughly incorporate magnesium oxide .5 Gm., spread on glass plates, expose to current of warm air until dry, pulverize, add enough dried starch for extract to weigh 20 Gm., mix thoroughly, pass through fine sieve; 1 Gm. represents 5 Gm. of the drug. Should be kept in small, wide-mouthed, tightly-stoppered bottles. Dose, gr. 3-10 (.2-6 Gm.).

2. Fluidextractum Viburni Prunifolii. Fluidextract of Viburnum Prunifolium. (Syn., Fldext. Viburn. Prun., Fluid Extract of Viburnum Prunifolium, Fluidextract of Black Haw (Bark); Fr. Extrait fluide de Viburn(e)-um; Ger. Viburnumfluidextrakt.)

Manufacture: Similar to Fluidextractum Sabal, page 95; menstruum: 07 p. c. alcohol. Dose, 3ss-2 (2-8 Ml. (Cc.)).

Unoff. Preps.: Decoction, 5 p. c, dose, ℥j-2 (30-60 Ml. (Cc.)). Elixir, 12.5 p. c. (fldext.), + comp. tinct. of cardamom 7.5, aromatic elixir q. s. 100. Infusion, 5 p. c, dose, ℥j-2 (30-60 Ml. (Cc.)).

Properties. - Diuretic, tonic, antispasmodic, nervine, astringent.

Uses. - In threatened abortion, nervous diseases of pregnancy, dysmenorrhoea, after-pains, ovarian irritation, menorrhagia, asthma, hysteria.

Allied Plants: