GUAIACUM OFFICINALE. 25 
Browne made the Canella a distinct genus, the only species of which is the C. Alba of Murray, while the Winter’s 
Bark tree was called, when fully determined, W. aromatica, since Drimys, which see. 
The bark is introduced into the market in quilled or flat pieces, rough externally, of a pale orange-colour, with 
lighter spots, and whitish internally. It breaks with a short fracture, and has an aromatic odour, with a warm, biting, 
bitter taste. It contains volatile oil, resin, bitter extractive, and a sweet substance, Canellin. 
The medical properties are those of a stimulant and tonic ; it is given in powder, infusion, and tincture. 
Prate X VI.—Represents the plant in flower, and the fruit. 
ZYGOPHYLLE A. 
R. BROWN. 
BEAN CAPERS. 
EssentiaL Cuar.—Sepals five, distinct, or scarcely coherent at the base. Petals five, alternate with the sepals, 
inserted on the receptacle. Stamens ten, distinct, hypogynous, five opposite to the sepals, and five to the petals. Ovary 
single, five-celled ; styles five, united into one, sometimes rather distinct at the apex. Capsule of five carpels, which 
are more or less adnate to each other and to the central axis; ceils dehiscent at the superior angle, usually many-seeded, 
or one-seeded, neither cocculiferous nor ariliferous. Seeds albuminous or commonly exalbuminous ; embryo straight ; 
radicle superior ; cotyledons foliaceous. (De Candolle.) 
Herbs, shrubs, or trees. They abound in the tropical portion of the world. The Guaiacums are possessed of 
resin, and have stimulating properties. 
GUATACUM OFFICINALE. 
LINNAUS. 
Sex. Syst.—Decandria, Monogynia. 
pe we five-partite, obtuse. Petals five. Stamens ten, with filaments naked, or sub-appendiculated. 
fixed dis the gma one. Capsule substipitate, five-celled, five-angled, or from abortion two to three-celled ; seeds solitary, 
ead e pendulous ; albumen cartilaginous, rimulose ; cotyledons thickish. (De Candolle. ) 
ine ota a tree from forty to sixty feet high, with crowded flexuose branches. Leaves opposite, bijugate ; 
Paiacks opi or less obovate, rounded at the apex, nerved, glabrous, the common petiole terete, channelled above. 
sepals five: ty, a Pee se three together, an inch in length, one-flowered, filiform, minutely puberulous. Calycine 
ies tea ‘ = oe somewhat broader than the others; all of them obtuse and incano-tomentose. Petals five, 
ids tek - oe He sepals, oblong, bluntish, blue, hairy. Filaments ten, twice the length of the sepals, grooved at 
“CK; anthers bifid at the base, arcuate, yellow. Style and stigma simple. Fruit a fleshy capsule, of a reddish- 
The bark of this tree is thick and smooth, and of a grayish colour. The wood is exceedingly hard. It is known 
7 © wood and ici i 
ii aad O , resin are both used for medicinal purposes. ‘The latter is obtained in mass by boring billets at one 
7 
