Lilacee—Tiha. 85 
valvate. Petals 5, often with a scale at the base. Stamens 
numerous. Ovary 5-celled. Fruit globose, nut-like, indehi- 
scent; 1- or 2-seeded; seeds albuminous. About eight species, 
from the temperate region of the northern hemisphere. The 
Latin name of this genus. The Lime-tree, or Linden, in its 
numerous variations forms one of our handsomest ornamental 
trees. The Russian bast is from the bark of the Lime-tree. 
1. 7. Europa. Lime-tree.—This, in its ordinary form, is 
a stately tree 60 to 100 feet high; but the varieties of it 
differ greatly in stature and size and form of leaf, and presence 
or absence of pubescence on the leaves and fruits. Many of 
these forms have been described as species, though they are 
now usually ranged under this name. The common native 
variety is parvifolia—a small tree with small glabrous leaves 
and hairy fruits. The one coramonly planted is called grandi- 
folia, and has large leaves which are downy beneath and ribbed 
fruits; and there is a handsome weeping variety of this. The 
variety laciniata has lobed leaves, and corallina (or rubra) 
bright red twigs—this is a very handsome variety; aiwrea has 
golden-yellow twigs, and there are several other varieties of 
more or less merit. 
2. T.argéntea, syn. 7. tomentosa and 7. alba (not of Michaux). 
—tThe bark of this species is greyish white, and the leaves are 
clothed with a silvery pubescence beneath. It blooms later 
than the common one, and retains its leaves later in Autumn. 
This is a native of South-eastern Europe and Asia Minor, 
now tolerably abundant in this country, and one of the hand- 
somest in cultivation. 
3. T. Americana, syn. T. Canadénsis, T. nigra, and T. 
glabra.—This is the commonest of the American species in 
cultivation, being represented by several varieties. They may 
be distinguished by their obliquely broadly cordate or truncate 
deeply mucronately toothed glabrous leaves. There are several 
names besides those above enumerated given to slight and 
often inconstant varieties. One form has leaves a foot or more 
long and proportionately broad. 
T. alba, T. heterophylla, and T. pubéscens are the names of 
other North American species, but the same names are em- 
ployed for some varieties of the European species. 
The T. dasystyla of Loudon, or euchléra of Koch, if indeed 
both authors had the same thing in view, is a handsome form 
with dark green glabrous leaves except on the under side in 
the angles of the principal nerves. 
