664 ARBORETUM AND FRUTICETUM. PART III. 
ending in a pungent point. It is 
anative of New South Wales, and 
grows to the height of 10 ft., flow- 
ering from April to July. 
A. verticillata Willd. YBot.Ma “5 
110., and our iff: 384.) has the 
dilated petioles linear, and disposed 
verticillately. Itisa well-known 
species, easily recognised by the 
figure, a native of Van Diemen’s 
Land,which has been in cultivation 
in England since 1780, flowering 
from March till May, and occa- 
4, sionally ripening seeds, even in 
‘the open air. A plant of this 
. species in the Horticultural So- 
= clety’s Garden stood out as a 
standard, with very little protec- 
tion, from 1832 till January, 1836 ; 
when it was killed, or much in- 
jured, by the severe frost. It had, 
however, no protection. One in 
the same garden, against the wall, 
was also much injured; but it had no protection in front. A. v. 3 latifolia Dec. has stood out 
against a wall in the Horticultural Society’s Garden since 1831, 

2. Conjugato-pinnate. 
Sect. Char. Leaves with one pair of pinnez, each pinna bearing few or many pairs of leaflets. 
This is an artificial section, composed of a heterogeneous assemblage of species, the most part of 
which are not well known. (Don’s M7il., ii. p. 408.) 
A. gummtfera Willd. has the pinne bearing 6 pairs 
of linear obtuse leaflets. Jt isa native of the north 
of Africa, near Mogador, where it forms a tree of the 
middle size, and yields the gum Arabic, in common 
with several other species. It was introduced in 1823. 
A. coronillef dlia Desf. is a tree from the same coun- 
try, introduced in 1817. 
A. pulchélla R. Br. (Bot. Cab., t. 212. and our 
figs. 385, 386.) is a smooth shrub, with the pinne bear, 
ing 5—7 pairs of oblong-obovate obtuse leaflets, an 
having its heads of flowers solitary. It is a native of 
New Holland; was introduced in 1803; and grows to 
the height of 5 ft. or 6 ft. 
A. détinens Burch. (Don’s Miil., 2. p. 408.) and A. 
viridiramis Burch. (zbid.) are natives of the Cape of 
Good Hope, which have been some years in British 
green-houses. They both grow to the height of from 
3 ft. to 6 ft,, and continue flowering from April to July. 

3. Spiciflore. 
Sect. Char. Leaves bipinnate, with few or many pairs of pinnz, each 
of leaflets. Flowers disposed in spikes. (Don’s Mill., ii. p. 409.) 
A. Unarmed Trees or Shrubs. 
A, lophantha Willd., Mimosa élegans Bot. Rep., (Bot. 
Cab., t. 716., and our jig. 387.), is a species in very gene- 
ral cultivation. It will grow to the height of 6 ft. or 8 ft. 
in 2 or 3 years from the seed, flowering the first year. It 
was introduced in 1803, from New Holland; and its fine 
yellow flowers, which are somewhat fragrant, are pro- 
duced from May to July. There is a plant of it against 
the wall, in the Horticultural Society’s Garden, 10 ft. or 
12 ft. high ; one at Abbotsbury Castle, Dorsetshire, grow- 
ing as a standard in the open air, without the slightest “3% 
protection, which is 40ft. high, and ripens its seeds 
freely ; and one in the grounds of E. Pendarvis, Esq., 
at Pendarves, Cornwall, which is 20 ft. high. 

B. Prickly or spiny Trees or Shrubs. 
A. cafra Willd., Mimdsa cafra Thunb., has leaves with 5—10 pairs of pinne, each pinna bearing 
20—30 pairs of lanceolate-linear leaflets. It is a native of the Cape of Good Hope, introduced in 
1800 ; and forms a tree from 12 ft. to 20 ft. high. 
A. dlbida Delil. (Fl. Agypt. 143., t. 52. f. 3.), the Egyptian thorn, has straight stipular prickles, 
and leaves with 3—4 pairs of pinnae, each pinna bearing 9—10 pairs of oblong-linear glaucous 
leaflets, It is a native of Upper Egypt, where it grows to the height of 20 ft. 
