459 



impurities of pieces of bark which are always to be found in 

 considerable quantity in the rubber as extracted by the natives. 

 The rubber may be sheeted or exported direct in the somewhat 

 granular form in which it is turned out by the process. The 

 rubber is of very good quality, and the yield from the roots is said 

 to be about 10 per cent. As the process is of a simple character, 

 and there is an abundance of water power, the new process seems 

 likely to make a considerable advance in the value of the Landol- 

 phia root rubber. 



The value of the Landolphia, however, does not end with the 

 rubber, for from the granulated bark a fine, rich, red -brown dye is 

 obtained. Mr. Hunicke has presented samples both of the granu- 

 lated bark and of the dye, and also specimens of the impure 

 rubber as extracted by the natives, and a herbarium specimen of 

 the leaves and flowers of Landolphia Thollonii. 



A sample of the root of Landolphia humilis, K. Schum., with a 



herbarium specimen also accompanies these specimens. The 



rubber from this plant is small in quantity and of very little 

 value. 



A sample of the root and a herbarium specimen of Carpodinus 



lanceolata, K. Schum., from the Black River, Congo, are also 

 included. 



Sideroxylon novo-zelandicum, Hemsl. (syn. Achras novo-zelan- 



uV' Mue11 -)-— As long ago as 1875, the late Sir Ferdinand von 

 Mueller pointed out (Fragm. Phutogr. Austral . vol. ix. p. 72) 



t i * New Zealaild P^nt, generally referred to the Norfolk 

 island Achras costata, Endl. (Prodr. FL N»rf. 1833, p. 49 ; 

 iconogr. Gen. PL t. 83), did not agree with Bauer's drawings, 

 ^ompanng the Norfolk Island specimens with those from New 

 ^ealand, I think Mueller was right. The leaves of the Norfolk 

 island plant are on the whole larger, thicker, more tapering 

 towards the base, and the petioles are longer. The flowers are 

 usually in pairs in typical A. costata. and solitary in the New 

 aland s P ec imens we have seen. Kew, however, possesses no 

 well-developed flowers from Norfolk Island, but the calyx in the 

 iruiting specimens is much larger than in 8. novo-zelandicum. 



W. B. H. 



Asiatic Lardizabalaceae.— Hook 



^ecember, 1907) tt. 2842-2849, contains figures and descriptions 

 °r a number of Asiatic, mainly Chinese, members of this family, 



jnci U( j ing a new genugj Sino/ranchetia, Hemsi. ; and in the 

 letterpress to t. 2843 Holboellia, Wall. (1824) and Parvatia, Decne. 



U»37) are reduced to Stauntoma, DO. The reasons for this 

 course are not so fully discussed as thev might be ; but I did not 

 J n< %e that it was necessarv to enter into details, because I was 

 r^ffi I Allowing what had 'been done long ago by Wallich and 

 wimth. However, one of the principal reasons given is the 

 presumed insufficiency of the presence or absence of petals 

 (nectaries) as a generic character, and unfortunately the explana- 

 tion was so phrased as to convey the impression that it was 



