286 
Further Studies on Aeginetia indica. 
By 
S. Kusano, 
With Plate XI and XII. 
In my former paper (1903) some accoimts were given of tlie 
morpliology, anatomy, and biology of Aeginetia indica. So far as 
my observations went, tbis parasite sbowed no special cbaracter 
in tbe manner of its development, wbicb can be distingnisbed from 
tbat of Orohanche as tboronghly investigated by Koch (1883). 
Wben I nndertook dnring tbe past year a fnrtber study of tbis 
parasite, particularly as regarded tbe germination of tbe seeds and 
tbe development of tbe seedlings, I could sbow tbat at an early 
Stage of development Aeginetia displayed many pecubarities, some 
of wbicb are perbaps uniqne. As tbe resnlts obtained appear not 
only interesting in tbemselves, but also contribnte sometbing to 
tbe knowledge of pbanerogamic parasites, I tbink it advisable to 
give tbem briefly in tbe present paper. 
Very little bas yet been pnbbsbed on tbe early stage of 
development of tbe Orobanclmceae. In Lathraea He in riebe r 
(1894, 1895) made some experiments on tbe germination of tbe 
seeds and tbe development of tbe seedbngs. According to bim, 
tbe seeds sbow no featnre dnring germination and fnrtber develop¬ 
ment tbat is wortby of special mention. Tbe vegetative Organs 
are very mneb reduced in form, but tbe embiyo does not differ 
essentially in structni’e from tbat of most autopbtTic plants, being 
provided apparentl}" witb a pair of cotyledons and a radicle. In 
germination tbe radicle first grows into a fllamentons root wbicb 
soon branebes into numerons rootlets. Tbe rootlets tben produce 
baustoria wbere tbey come in contact witb tbe bost-root (Hein- 
ricber, 1894, p. 128). Fnrtber be ascertained tbat tbe seeds 
reqnire in germination tbe presence of proper bost-root wbicb be 
believed to exert a cbemical stimnlns. 
Koeb (1883) extended onr knowledge on Oroha7iche, and 
sncceeded in raising seedlings fi’om tbe seeds laid on or near a 
