86 
Enneandria, 
Laur. Camphora, Camphor Tree ; with lanceolate, 
ovate, triple-nerved leaves, the nerves extending to the 
point of the leaf. The camphor tree is a native of 
Japan, and grows to a large size, but is not a stranger 
to the green-house in this country. 
Every part of the tree yields camphor. 
Order II. Trigynia. 
Rheum Palmatum , Rhubarb. Cal. none ; cor. six* 
cleft ; one triangular seed. This species, which lias 
large palmated leaves, is a native of China, and yields 
the true rhubarb of the shops 5 although it is probable 
that the roots of more than one species are brought 
into commerce. The cultivation of this species has 
succeeded well in different parts of Britain ; and the 
roots are considered by many to possess medical vir- 
tues equal to the imported rhubarb. Several other 
species of rhubarb are known ; and of the stems of 
rheum, rhaponticum , which sometimes is called English, 
and sometimes Scotch Rhubarb, an excellent tart is 
made. 
Order III. Hexagynia. 
Butomus Umbellatus, Flowering Rush. Cal. none; 
-petals six ; caps, six, superior ; many seeded. This 
plant, which is the -only species of the order and genus, 
is a fine ornament to the banks of rivers and pools in 
England, where it is a native. 
1 
