294 Kusano, Further Studies on Aeginetia indica, 



Iridaceae. 



Iris tectorum Max. (Ichihatsu). 

 Dioscoreaceae. 



Dioscorea sativa L. (Marubadokoro). The development 

 of roots far less vigorous than other plants. 

 Zingiberaceae. 



Zingiber Mioga Eosc. (Myoga)*. Roots very vigorous. 

 Cannaceae. 



Canna indica L. (Dandoku). 

 With the exception of Ophiopogon all the plants above 

 mentioned gave the required Stimulus, and the seed attained after 

 two weeks to a stage similar to that shown in Fig. 4. The per- 

 centage of germination seemed to be larger on plants which pro- 

 duced vigorous roots. In Zingiber and Pollia young roots were 

 constantly and luxuriantly produced during the experiment, so that 

 almost all the seeds laid on them came to germination. As for 

 Ophiopogon the roots were not very aetive during the experiment, 

 and the necessary Stimulus, if present, seemed to have been 

 too feeble. 



c. Dycotyledons : Only a few plants were taken here. This 

 was due to the circumstance that more plants had not been pre- 

 pared as pot-plants for my purpose. 

 Plumbaginaceae. 



Armeria maritima Willd. 

 Araliaceae. 



Fatsia japonica Dcne. et Plane. (Yatsude). The roots 

 were very few and not vigorous. 

 Geraniaceae. 



Pelargonium zonale Willd. (Montenjikuaoi). 

 Rosaceae. 



Pirus Malus L. var. tomentosa Koch. (RiDgo). Roots 



evry few, not vigorous. 

 Prunus Mume S. et Z. (Mume). Roots very few, not 

 vigorous. 

 Solanaceae. 



Solanum tuberosum L. (Bareishod). Roots very scanty. 

 Leguminosae. 



Pisum sativum L. (Endo). 

 Compositae. 



Chrysanthemum sinense Sab. (Kiku). 

 Solidago occidentalis Torr, et Gray. (Oawadachiso). 

 Taraxacum. officinale Wigg. var. glaucescens (Koch). (Tan- 

 popo). The development of roots not vigorous). 

 Of these plants Fatsia and Taraxacum did not bring the seed 

 to germination. This might perhaps be due to a comparatively 

 weak development of the roots as above noticed. On the other 

 hand, the seeds laid on all the other plants mostly germinated 

 just as they did on Monocotyledons. It must, however, be re- 

 marked that the germination did not all proeeed so far in their 

 development so to produce the hair-tendrils: stopping at the stage 



