JOURNAL OF THE COLLEGE OF SCIENCE, IMPERIAL UNIVERSITY, 

 TOKYO, JAPAN, 



VOL. XVII, ARTICLE 10. 



Studies on 



the Parasitism of Buckleya Qnadriala, B. et H., 



a Santalaceous Parasite, and on the 



Structure of its Haustorium. 



By 

 S. Kusano, Bigdkushi. 



With, one [Jalc 



I. INTRODUCTION. 



The family Santalaceae includes, according to Hieeonymus, 1) 

 twenty-six genera, some of which are already known as hemi- 

 parasites. 23 But investigations on this family are far from being 

 complete and especially those species known as hemiparasites can 

 scarcely be said to have been adequately treated, if we except 

 some widely distributed species belonging to the genus Thesium. 

 The inadequacy of our knowledge of this family has led Hieeo- 

 nymus to remark most properly that probably other genera of 

 the Santalacese should be counted among the category of the 

 hemiparasites. 3 ' 



1). IIieronymus, Santnlacea'. Engleb und Peantl, Die natürlichen Pflanzenfamilien, 

 HL 1, 1889, p. 202. 



2). These are Hendowia, Pliaedlaria, Oxyris, SwnJainm, Comandra, Tliesium, Arjona, and 

 Quinchamalium. 



"). Htebonymus, loc. cit. ]i. 203. 



