GLEDITSCHIA 595 



the species to which notice is given below, the two following are in 

 cultivation. 



G. DELAVAYI, Franchet. Introduced by Wilson from Yunnan, China, 

 in 1900, this appears to be more tender, at least when young, than any 

 other species in cultivation, It is well distinguished even in a young 

 state by its downy shoots, all the others being smooth. In the young 

 state the leaflets are small, and as many as three dozen to a simply 

 pinnate leaf, but in adult trees they become much reduced in number. 

 Pods up to 20 ins. long. 



G. TEXANA, Sargent. Found only in a single grove on the Bottom 

 Lands of the Brazos River in Texas. Sargent sent seeds to Kew in 

 1900, from which plants were raised that grow luxuriantly during the 

 summer, but are usually badly cut in winter. In foliage it is like 

 G- triacanthos, but the pods are only 4 to 5 ins. long, i in. wide, and 

 without pulp. The young plants at Kew have slender, branched spines. 



G. AQUATICA, Marshall. WATER LOCUST. 



(G. inermis, Miller ; G. monosperma, Walter?) 



A tree described by Sargent as 50 to 60 ft. high, with a trunk 2 to i\ ft. in 

 diameter, but in this country inclined to be shrubby, and to form several 

 stems ; spines ultimately about 4 ins. long, branched ; young shoots not 

 downy, but marked with conspicuous lenticels. Leaves up to 8 ins. long, 

 simply or doubly pinnate ; leaflets of the pinnate leaf (or of each division of 

 the bipinnate ones) twelve to twenty-four. Each leaflet is lanceolate-oblong ; 

 i to ii ins. long-, to in. wide ; rounded, bluntish, or somewhat pointed at 

 the apex ; margins wavy ; glossy and smooth except for the down on the 

 short stalk of the leaflet, on the upper side of the main-stalk, and scattered 

 hairs on the margins of the leaflets. Flowers borne on slender racemes 

 3 or 4 ins. long. Pod obliquely diamond-shaped, if ins. long, nearly I in. 

 wide, not pulpy inside ; seeds solitary (rarely two). 



Native of the south-eastern United States ; introduced in 1723, according 

 to Aiton, but now extremely rare. It is hardy at Kew, but grows slowly. Its 

 small, one-seeded pod well distinguishes it, but I do not know that this has 

 been borne in cultivation here. 



G. CASPICA, Desfontaines. CASPIAN LOCUST. 



A tree 30 to 40 ft. high, its trunk excessively armed with formidable, 

 branching, slightly flattened spines, 6 ins. or more long ; young shoots 

 smooth. Leaves 6 to 10 ins. long, simply or doubly pinnate. Leaflets up to 

 twenty on the pinnate leaves, or on each division of the doubly pinnate ones ; 

 ovate to oval, I to 2 ins. long, to f in. wide ; rounded and with a minute 

 bristle-like tip at the apex, very shallowly round-toothed. The midribs and 

 main leaf-stalk on the upper side, as well as the very short stalk of the leaflet, 

 are downy ; the leaf otherwise is smooth and shining green. Flowers green, 

 almost stalkless, densely arranged on downy racemes 2 to 4 ins. long. Fruit 

 scimitar-shaped, usually about 8 ins. long, i to \\ ins. wide. 



Native of N. Persia, in the neighbourhood of the Caspian Sea ; introduced, 

 according to Loudon, in 1822. It is a sturdy tree with much larger leaflets 

 than G. 'triacanthos, and is remarkable for the size and number of spines on 

 the trunk, which is, indeed, the most formidably armed among cultivated 

 trees. The species is well worth growing on that account. The leaflets are 



