REVIEWS. 93 



(Thwaites, C. P. 623, p.p. ) R. exigua, Mez.. n. sp. (top of Adam's 

 Peak, Thwaites, C. P. 2,598 ; and R. rubens, Mez., n. sp. (Thwaites 

 C. P. 3,009). 



§ 10. Tropacolacece. None in Ceylon. 



J. C. W. 

 (To be continued at intervals.) 



Apogamy in Elatostema. 



(M. Treub. L' Apogamie de 1' Elatostema acuminatum. 

 Brongn.. Ann. Jard. Buit., 2. V., p. 141.) 

 This species occurs, though it is very rare, in the lower montane 

 zone, in Dolosbage. The embryo-sac developes 4 or 6 nuclei, and 

 the tissue above it becomes sclerenchymatous, and then one of 

 the nuclei in the sac developes into an embryo without fertiliza- 

 tion. 



J. C. W. 



Ant inhabited Plants in Ceylon. 



(E. Morteos : Sopra due piante formicarie, Humboldtia lawrifoUa, 

 L. e. Triplaris americana, Vahl. Malpighia, vol. 

 XVIII. , 1904, pp. 504-511, pi. X., XL) 

 Humboldtia laurifolia Vahl (not L.), the Gal-karanda of the 

 Sinhalese, is common in most low-country forests, and is a graceful 

 little tree with spreading branches and pendulous young foliage. 

 The young branches have curiously swollen internodes with 

 perforations near the top, inhabited by ants. 



J. C. W. 



