42 



On the Parasitism of Buckleya Quadriala 

 B, et H. (Santalacese). 



{Preliminary note.) 



By 

 S. Kusano. 



The recent researches on phanerogamic parasites afford very important 

 contributions to the knowledge of the nutritive relations among autophytes, 

 hemiparasites and true parasites^. As to Santalaceee in which numerous 

 interesting parasites are to be included, a precise knowledge of the pheno- 

 mena connected with their nutrition seems to be yet lacking, though the struct- 

 ure and the development of the haustorium of some of the species have 

 been already studied. 2) I can not help thinking that not only is the close 

 investigation of their parasitism interesting in itself but also important for 

 the verification of the results of modern observations on green parasites. 

 Since it seems that the parasitic nature of our native Buckleya Quadriala 

 has hitherto been unknown to botanists, and as the research would make 

 an important addition to our knowledge concerning the parasitic Santalacese, 

 I thought it would not be unnecessary to devote myself to the study of this 

 plant. What we know, at present, about the life of Buckleya is very 

 deficient. Gardeners have never been successful in transplanting it even in 



l)Koch, Ueber die directe Ausnutzung vegetabilischer Reste, etc. Ber. d. deutsch. 

 bot. Gesellsch. Bd. V, 1887, p. 350;—, Zur Entwickelungsgeschichte der Rhinanthaceen. 

 Jahrb. f. wiss. Bot, Bd. XX, 1889, p. 1 and Bd. XXII, 1891, p. 1; Peirce, A Con- 

 tribution to the Physiology of the Genus Cuscuta. Ann. of Bot. Vol. VIII, 1894, p. 53; 

 ,Hein richer, Anatomischer Bau und Leistung der Saugorgane der Schuppenwurz-Arten. 

 Cohn's Beitr. z. Biol. d. Pflz. Bd. VII, 1895, p. 315;—, Die griinen Halbschmarotzer. I 

 Jahrb. f. wiss. Bot. Bd. XXXI, 1897, p. 77 and IUahrb. f. wiss. Bot. Bd. XXXII, 1898, p. 389 ; 

 — , Auf dem Wege vom Halbparasitismus zum absoluten Parasitismus. Sond. Abdruck aus Ber. 

 d. uat, wiss.— medic, in Innsbruck. XXV, 1899-1900; Wettstein, Monographic d. Gattung 

 Euphrasia. Leipzig 1896 ; etc., etc. 



2) Graf zu Solms-Laubach, Ueber den Bau und die Entwicklung der Ernahrungs- 

 organe parasitischer Phanerogamen. Jahrb. f. wiss. Bot. Bd. VI, 1868, p. 509; Leclerc du 

 Sablon, Recherches sur les organes d' absorption des plantes. Ann. d. sciences natur., Bot, 

 7 sene, t. VI, 1887, p. 90). 



