478 XXIII. LEGUMIN08AE 



Stipules minute, linear. First leaf compound, paripinnate, with racliis 0-6-1 in, 

 long, terminating in a bristle, leaflets normally three pairs, opposite, shortly 

 petioled, 0-4-0-6 in. by 0- 15-0-25 in., obliquely ovate or obovate oblong, acute 

 or obtuse, glabrous. Subsequent leaves bipinnate, leaves of the first season 

 with one pair of pinnae, the number of pairs increasing later ; common rachis 

 and pinnae each 0-5-2 in. long ; leaflets at first two or three pairs on each 

 pinna, the number increasing to about ten pairs during the first season, opposite 

 or sub-opposite, up to 1 in. by 0-3 in. 



Under natural conditions the seedling usually attains a height of 4-8 in. 

 by the end of the first season, but if regularly weeded and watered it grows 

 rapidly, nursery -raised seedlings at Dehra Dun having attained a height of 

 1 ft. to 1 ft. 8 in. in three months from germination. The seedling is capable 

 of struggHng during the first season through low weeds and grass, its growth 

 being slow during the process but increasing considerably after the weeds 

 have been surmounted. The sudden removal of weeds from around seedlings 

 previously unweeded, however, is liable to cause their death through sudden 

 exposure to the sun. Vigorous seedlings produce long stout taproots which 

 may reach a length of nearly 2 ft. in three months from germination : the 

 lateral rootlets are usually covered with nodules. 



The following measurements of seedlings in various plots at Dehra Dun 

 will give some idea of the rate of growth under different conditions : 



Albizzia procera : development of seedlings. 



Conditions under Height at end of season, 



wliich grown. 1st season. 2nd season. 3rd season. 4th sc 



Nursery -raised trans- (1) Maximum ft. 6 in. (1) 1 ft. 2 in. -3 ft. 4 in. (1) 1 ft. 9 in. -7 ft. 5 in. 



plants, entire stem (2) 1 ft. 4 in. (2) Maximum 3 ft. 1 in. 



and roots 

 Nvirsery-raised trans- Maximum 1 ft. in. Maximum 4 ft. 2 in. 2 ft. 10 in.-8 ft. 5 in. 



plants, pruned stem 



and roots 

 Natural conditions, (1) Maximum ft. 6 in. (I) Maximum 2 ft. 1 in. 



unweeded, in full (2) 4 in.-T^ in. (2) 1 ft. 6 in.-2 ft. 5 in. (2) 2 ft. 4 in.-8 ft. 2 in. (2) Mf 



sunlight 11 ft 



Natural conditions, (1) Maximum ft. 6 in. (1) 5J in.-l ft. 10 in. 



unweeded, in mode- (2) ft. 7i in. (2) 9 in.-l ft. 8 in. 



rate side shade 



The growth would in most cases have been greater except for the damage 

 caused by the hemipterous insect Oxyrhachis tarandus, Fabr., which causes 

 much injury to this species, as in the case of Albizzia Lebbek. The seedlings 

 are somewhat frost-tender, and are liable to be killed back in frosty localities. 

 Growth ceases about November, and recommences about February- March. 

 The leaves drop from December to February and the seedling is leafless for 

 a short time. 



SiiiVicuLTURAL CHARACTERS. Although it stands moderate but not heavy 

 shade in youth the tree may be classed as a light-demander, as it cannot 

 stand suppression. In the abnormal drought of 1907 and 1908 in Oudli it 

 proved fairly drought resistant, though in the moist localities in which it 

 grows it was probably not as severely tested as species growing in drier tracts. 

 In the great frost of 1905 in northern India it suffered severely. The tree is 

 much subject to cankerous wounds, as a rule where branches have been broken 



