132 



JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



staminodes and labellum bright rose colour, latter 1J inches long and 

 3 inches broad, with a yellow blotch. — G. H. 



Larix Griffithii. By 0. Stapf (Bot. Mag. tab. 8181).— Nat. ord. 

 Conifer ae, tribe Abietineae. Sikkim and Bhutan. Tree 20-65 feet 

 high ; leaves fascicled, 30-50 ; cone cylindric, 3 inches long, purplish- 

 brown ; scales truncate, \ inch long and broad. — G. H. 



Limonium, Notes on. By C. E. Salmon (Jour. Bot. 529, pp. 24-25 ; 

 1/1907; and 540, pp. 428-432; 12/1907).— Continued from Jour. Bot. 

 505, p. 5 ; 1/1905 ; and dealing with L. binervosum and its vars. 

 procerum and kumile, and with L. bellidifolium. — G. S. B. 



Magnolias, Deciduous. By E. Raignault (Le Jard. No. 54, p. 53 ; 



February 20 ; 5 figs.). — A description of the various species and varieties 

 of deciduous Magnolias, with their several characteristics, the Asiatic 

 species dealt with being M. conspicua, obovata or purpurea, stellata, Wat- 

 sonii, and Campbellii ; the American M. macrophylla, Umbrella, acuminata, 

 cordata, glauca, and Fraseri. There is a further note by P. Hariot on 

 M. hypoleuca from China and Japan. — F. A. W. 



Nitrogenous Manure, The Application of. By Dr. R. Otto 



(Gartenflora, No. 5 ; 1908). — Lettuces and kohlrabi were grown on four 

 plots : (1) without nitrogenous manure ; (2) with a dressing of sulphate 

 of ammonia (containing 20 per cent, of nitrogen) at the rate of 1| oz. per 

 square yard ; (3) with a dressing of twice this amount of sulphate of 

 ammonia ; (4) with a dressing of sulphate of ammonia at the rate of 

 3J oz. per square yard and copious moisture. 



In the case of the lettuces the best results were obtained from (3), the 

 other plots being placed in the order (2), (4), (1), with but slight difference 

 between the produce of plots (4) and (1). 



The kohlrabi roots did best in (2), the order of the other plots being 

 (1), (3), (4), while as regards leaf growth the order was (2), (4), (1), (3). 



In both cases the most notable result is the fact that the presence of 

 copious moisture in conjunction with heavy dressings of nitrogenous 

 manure has no beneficial effect on these vegetables, but rather the reverse. 



W. B. D. 



Olearia Ciliata. By W. Watson (Bot. Mag. tab. 8191).— Nat. ord. 



Compositae, tribe Asteroideae. Australia and Tasmania. Shrub 1-2 feet 

 high ; leaves crowded, recurved, J-l inch long, about J s inch broad ; 

 heads 1 inch diameter, lilac. — G. H. 



Olive Tubercle: Recent Studies. By Erwin F. Smith (U.S.A. 

 Dep. Agr., Bull. 131 ; May 1908). — In recent years the olive orchards 

 of California have suffered from swellings on the branches, known as 

 olive tubercle, and attributable to bacteria. This memoir gives its 

 history and records previous researches, with the results of more recent 

 studies, and at length, after investigating previous nomenclature, deter- 

 mines Bacterium Savastanoi to be the future designation of the organism 

 of the olive tubercle* — M. C. C. 



