664 



ARBORETUM AND FRUTICETUM, 



PART 111. 



ending in a pungent point. It is 

 a native of New South Wales, and 

 grows to the height of 10ft., flow- 

 ering from April to July. 



A. vcrticillata'Wim. (Bot. Mae., 

 110., and our fig. 384.) has the 

 dilated petioles linear, and disposed 

 verticillately. It is a 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- 

 sionally ripening seeds, even in 

 the open air. A plant of this 

 species in the Horticultural So- 

 ciety'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 alo much injured ; but it had no protection in front. A. v. 3 latifvlia Dec. 



against a wall in the Horticultural Society's Garden since 1831. 



382 



383 



has stood out 



385 



386 



2. Conjugato-pinndtce. 



Sect. Char. Leaves with one pair of pinnae, 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 Mill., ii. p. 408.) 



A. gummifera Willd. has the pinna: bearing 6 pairs 

 of linear obtuse leaflets. It is a 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. coronilfa/dlia Desf. is a tree from the same coun- 

 try, introduced in 1817. 



A. pulchella R. Br. (Bot. Cab., t. 212. and our 

 figs. 385,386.) is a smooth shrub, with the pinnae bear- 

 ing 5 7 pairs of oblong-obovate obtuse leaflets, and 

 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 6ft. 



A. ddtinens Burch. (Don's Mill., 2. p. 408.) and A. 

 viridiramis Burch. (ibid.) 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. SpidjlorcE. 



Sect. Char. Leaves bipinnate, with few or many pairs of pinna?, each pinna bearing many pairs 

 of leaflets. Flowers disposed in spikes. (Don's Mill., ii. p. 409.) 



A. Unarmed Trees or Shrubs. 



A. lophdntha Willcl., Mimosa elegans Bot. Rep. y {Bot. 

 Cab., t. 716., and our/g. 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 

 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. cdfra Willd., Mimbsa cafra Thnnb., has leaves with 510 pairs of pinna?, each pinna bearing 

 2030 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 20ft. high. 



A. dlbida Delil. (Fl. JEgypt. 143., t. 52. f. 3.), the Egyptian thorn, has straight stipular prickles, 

 and leaves with 34 pairs of pinna?, 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. 



