Naturalisation in Extra-Tropical Countries. 13 



the South of England it needs only wall-protection [Bateman]. It 

 likes river-banks, but never grows beyond the height of a small tree. 

 A neriifolia (A. Cunningham) of New South Wales and Southern 

 Queensland is a closely allied species. 



Acacia Senegal, Willdenow (A. Verek, Guillemin and Perrottet). 



From Senegambia to Nubia. Affords the best white gum arabic of 

 the Nile-region, and a large quantity of this on a commercial scale. A. 

 Etbaica (Schweinfurth) from the same region produces also a good 

 mercantile gum. 



Acacia Sentis, F. v. Mueller. 



Interior of Australia. This shrub or small tree is suitable for 

 hedges. The seeds of this species and also of A. Kempeana, A. 

 cibaria and some others are eaten by the natives. Horses, cattle, 

 sheep and goats browse in Central Australia with avidity on the 

 foliage [Rev. H. Kempe]. This species will endure most protracted 

 drought and a shade-temperature of 118 F. The foliage of this and 

 of A. aneura and A. salicina proved a favorite food of dromedaries 

 [Sir Thomas Elder]. Its gum is similar to the least-coloured kinds 

 of gum arabic. 



Acacia Seyal, Delile. 



In the Libyan and Nubian deserts. This thorny tree exudes a 

 brownish kind of gum arabic. It is adapted for the most arid desert- 

 country. The foliage a prominent feed for sheep, goats and camels 

 in some parts of Egypt [Floyer]. In any oasis it forms a large and 

 shady tree. Native name " Soffar." Can be utilised for thorny 

 hedges. 



Acacia stenocarpa, Hochstetter. 



Abyssinia and Nubia. A large tree, which yields the brownish 

 " Suak-" or " Talha " -Gum, a kind of gum arabic [Hanbury and 

 Flueckiger]. 



Acacia Stenophylla, Cunningham. 



On banks of water-courses in the interior of Australia, as far south 

 as the Murray-Kiver. A tree with exquisite, hard, dark wood, which 

 serves the same purposes as Myall-wood ; locally known as Iron- 

 wood. Attains a height of 60 feet and a stem-diameter of 2 feet. 



Acacia subporosa, F. v. Mueller. 



South-Eastern Australia. Straight stems over 50 feet long are 

 formed by this tree ; the wood is tough and elastic, fit for carriage- 

 shafts, gunstocks, various select tools [L. Morton]. ^ Australian. 

 Acacias were formerly the main glories of conservatories in home- 

 countries as the first harbingers of spring. 



