HYPOPETALER, 339 
_ trate of potassa or tartar, and malic acid in considerable 
_ quantity. When ripe, the grape is deemed antiseptic, diu- 
_ etic, and aperient. Tartar, an impure bitartrate of potassa, 
__ is deposited on the sides of the casks in which the wine is pre- 
pared ; from this, cream of tartar is prepared. In a medi- 
_ Ginal, as well asin an economical, point of view, however, the 
_ grape is most valuable on account of the wine which is pre- 
_ pared from it, so useful and indeed so essential, in diseases 
of debility, and during convalescence. 
Officinal Plant. 
Vitis vinifera. 
ORDER LXXXIX. 
ACERINEZ. 
_ Tues are trees with opposite leaves, without pas a 
calyx of 5 divisions, 5 petals, 8 stamens, a 2-lobed and 2- 
celled ovary, 2 stigmas, and a pericarp composed of 2 wing- 
ed indehiscent capsules. 
_ Exampies.—Greater Maple or Sycamore (Acer pseudo- 
platanus), from the saccharine sap of which a kind of wine is 
made in some parts of the Highlands ; Sugar Maple (A. sae- 
charinus), the sap of which furnishes a large quantity of an 
excellent sugar, much used by the Canadians, and known by 
the name of Maple sugar. 
ORDER XC. 
MELIACE4. 
Cuanacrens.—Trees or shrubs, with alternate leaves, des- = 
oe eo seme apes He bare ie 
