OF ORNAMENTAL EXOTIC PLANTS. 
SECT. IV.— JULIBRISSIN^. 
129 
Sectional Characteu. — Leaves bipinnate, with few or many pairs of pinnae, each pinna bearing few or many pairs of leaflets. Flowers with 
long silky stamens. Anthers glabrous. Stigma simple. 
Desceiption, &g. — 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 dinsion have pink flowers. 
16.— ACACIA JULIBRISSIN Willd. THE SILK TREE. 
orbicular gland at the base of the petiole. Heads of flowers pedun- 
culate, forming a terminal, somewhat corymbose panicle. Legumes 
flat, membranous, glabrous. ((?. Don.) 
SvNONYMEs. — Mimosa arborea ForsTc.\ M. Julibrissin Scop. 
Specieic Character. — Unarmed, glabrous. Leaves with from 
eight to twelve pairs of pinnae, each pinna bearing about thirty pairs of 
dimidiate, oblong, acute, rather ciliated leaflets, with a depressed 
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 Bon. MR. LAMBERT’S ACACIA. 
at each end. Petiole glandless. Heads of flowers three or five together, 
disposed in a raceme. 
Engravings. — Bot. Reg., t. 721 ; and omfig. 4, in PI. 26. 
Specific Character. — Unarmed. Leaves hipinnate, each pinna 
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. 
eighteen pairs of linear glabrous leaflets. Petiole glandless. Heads of 
flowers globose, pedicellate, disposed in racemes along the axillary 
peduncles. {G. Don.) 
18.— ACACIA PUBESCENS Dec. THE DOWNY-STEMMED ACACIA. 
Synonymes. — Mimosa pubescens Vent . ; M. suaveolens Donn. 
Engravings.— Bot. Mag.,t. 1263; The Botanist, t. 48. 
Specific Character. — Unarmed. Branches terete, hairy. Leaves 
with fi'om three to ten pairs of pinnae, each pinna hearing 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. 
obtuse, with a depressed gland between each pair of pinnse. Heads on 
long pedicels, axillary, simple. 
19.— ACACIA PENTADENIA Lindl THE FERN-LEAVED ACACIA 
Engraving.' — Bot. Reg., t. 1521. 
Specific Character. — Unarmed, smooth. Branches angular. Pinnae 
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 
so showy as those of some of the other species, are yet very pretty, while the foliage of the plant is remarkably 
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