FLOWERING TREES AND SHRUBS 165 



been sub-divided into a great number of varieties, some 

 of which are very distinct, but the majority are not 

 sufficiently so to warrant special attention. The following 

 include the best and most popular kinds : R. Pseud- 

 Acacia Decaisneana, a distinct form bearing light pinky 

 flowers; R. Pseud-Acacia Bessoniana, with thornless 

 branches and a dense head of refreshing pea-green 

 foliage ; R. Pseud-Acacia angustifolia, with narrow leaves ; 

 R. Pseud-Acacia aurea, a conspicuous but not very con- 

 stant golden-leaved form ; R. Pseud- Acacia inermis, of 

 which there are weeping, upright, and broad-leaved forms, 

 has narrow leaves that are glaucous beneath, and the 

 characteristic spines of the species are wanting or rarely 

 well developed. It is a small-growing, round-headed 

 bush, and is usually seen as a standard grafted on the 

 common type. R. Pseud-Acacia monophylla is very 

 distinct, the leaves being entire instead of pinnate ; while 

 R. Pseud- Acacia crispa has curiously-curled foliage. Then 

 there is the peculiar R. Pseud- Acacia tortuosa, of ungainly 

 habit; R. Pseud-Acacia umbraculifera, with a spreading 

 head ; R. Pseud- Acacia sophoraefolia, the leaves of which 

 resemble those of Sophora japonica ; and R. Pseud -Acacia 

 amorphsefolia, with very large foliage when compared 

 with the parent tree. The above may be taken as the 

 most distinct and desirable forms of the False Acacia, but 

 there are many others, such as R. Pseud-Acacia colutoides, 

 R. Pseud-Acacia ^semperflorens, and R. Pseud-Acacia 

 Rhederi, all more or less distinct from the typical tree. 



R. VISCOSA (syn R. glutinosa). Clammy Locust. North 

 America, 1797. This is a small-growing tree, and readily 

 distinguished by the clammy bark of the younger shoots. 

 Flowers in short racemes, and of a beautiful rose-pink, 

 but varying a good deal in depth of tint. It is a valuable 

 species for ornamental planting, and flowers well even in 

 a young state. 



Few soils would seem to come amiss to the Acacias, 



