
OF ORNAMENTAL EXOTIC PLANTS. 129 
SECT. IV.—JULIBRISSIN AE. 
Szctiona, Cuaracter.—Leaves bipinnate, with few or many pairs of pinne, each pinna bearing few or many pairs of leaflets, 
Anthers glabrous. Stigma simple. 
Flowers with 
long silky stamens. 
Description, &c.—This section takes its name from the beautiful Acacia Julibrissin, or Silk Tree, one of the 
most lovely of the whole genus. ‘The characteristics of this plant, and, indeed, of the whole section, are the long 
silky stamens of the flowers, which look like tufts of silk scattered over the whole tree. Many of the species 
in this division have pink flowers. 
16.—ACACIA JULIBRISSIN Willd. THE SILK TREE. 
Synonymes.—Mimosa arborea Forsk.; M. Julibrissin Scop. 
Spreciric Caaracter.—Unarmed, glabrous. Leaves with from 
eight to twelve pairs of pinne, each pinna bearing about thirty pairs of 
| dimidiate, oblong, acute, rather ciliated leaflets, with a depressed | 
orbicular gland at the base of the petiole. Heads of flowers pedun- 
culate, forming a terminal, somewhat corymbose panicle. 
(G Don.) 
Legumes 
flat, membranous, glabrous. 
Description, &c.—This very beautiful tree is seldom seen in this country, as it is too tender to stand in the 
open air, excepting in some parts of the south-western counties, and is yet too large to be grown in any moderate- 

sized greenhouse, as under favourable circumstances it forms a tree thirty or forty feet in height. In Italy it 
is seen frequently trained against walls, and in other partially sheltered situations, and it is generally admired 
for its beauty. The flowers are white, delicately tinged with pink, the stamens being flesh-coloured at the apex. 
The species is a native of Persia, whence it was introduced in 1745. 

17.—ACACIA LAMBERTIANA Don. 
Encravines.—Bot. Reg., t. 721; and our jig. 4, in Pl. 26. 
Speciric Cuaracter.— Unarmed. Leaves bipinnate, each pinna 
MR. LAMBERT’S ACACIA. 
at each end. Petiole glandless. Heads of flowers three or five together, 
disposed in a raceme. 
bearing nine or twelve pairs of oval-oblong leaflets, which are obtuse 
Description, &c.—A very handsome plant, a native of Mexico, whence it was introduced in 1820. It is very 
ornamental, and particularly so when cultivated in the same house with the yellow-flowered species, to which its 
lilac tassel-like blossoms afford a very agreeable variety. 

18.—ACACIA PUBESCENS Dec. 
Synonymes.— Mimosa pubescens Vent.; M. suaveolens Donn. 
Encravines.—Bot. Mag.,t. 1263; The Botanist, t. 48. 
Branches terete, hairy. 
THE DOWNY-STEMMED ACACIA. 
Petiole glandless, Heads of 
flowers globose, pedicellate, disposed in racemes along the axillary 
(G. Don.) 
eighteen pairs of linear glabrous leaflets. 
Sreciric Cuaracter.— Unarmed. Leaves | peduncles. 
with from three to ten pairs of pinne, each pinna bearing from six to 
Description, &c.—This is one of the most elegant of all the kinds of Acacia, from the small size and extreme 
delicacy of its leaves, and the great profusion of its flowers, which grow in small heads about the size of a pea 
each and are extremely fragrant, especially in the evening, smelling like a Tonquin Bean or fresh-made meadow 
hay. ‘The species is a native of New South Wales, whence it was introduced in 1790. 
THE FERN-LEAVED ACACIA. 
obtuse, with a depressed gland between each pair of pinne. Heads on 
19.— ACACIA PENTADENIA Lindl. 
Eneravinc.—Bot. Reg., t. 1521. 
Spreciric Cuaractrr.—Unarmed, smooth. Branches angular. Pinne | long pedicels, axillary, simple. 
in four or five pairs; leaflets about twenty-four to each pinna, oblong, 
Description, &c.—This is a very elegant greenhouse plant, producing its flowers in April, which, though not 

8 


so showy as those of some of the other species, are yet very pretty, while the foliage of the plant is remarkably 



