294 
Kusano, Further Studies on Aeginetia hidica. 
Iridaceae. 
Iris tectorum Max. (IcMhatsu). 
Dioscoreaceae. 
Dioscorea sativa L. (Marubadokoro). The development 
of roots far less vigorous tban other plants. 
Zingiberaceae. 
Zingiber Mioga Eosc. (Myoga)*. Koots very vigorous. 
Cannaceae. 
Canna indiea L. (Dandoku). 
Witb tbe exception of Ophiopogon all tbe plants above 
mentioned gave tbe required Stimulus, and tbe seed attained after 
two weeks to a stage similar to tbat sbown in Fig. 4. Tbe per- 
centage of germination seemed to be larger on plants wbicb pro- 
duced vigorous roots. In Zingiber and Pollia young roots were 
constantly and luxuilantly produced düring tbe experiment, so tbat 
almost aU tbe seeds laid on tbem came to germination. As for 
Ophiopogon tbe roots were not very active during tbe experiment, 
and tbe necessary Stimulus, if present, seemed to bave been 
too feeble. 
c. Dycotyledons: Only a few plants were taken bere. Tbis 
was diie to tbe circumstance tbat more plants bad not been pre- 
pared as pot-plants for my purpose. 
Plumbaginaceae. 
Armeria maritima Willd. 
Ai’aliaceae. 
Fatsia japonica Dcne. et Plane. (Yatsude). Tbe roots 
were very few and not vigorous. 
Geraniaceae. 
Pelargonium zonale Willd. (Montenjikuaoi). 
Rosaceae. 
Pirus Malus L. var. tomentosa Koeb. (Ringo). Roots 
evry few, not vigorous. 
Prunus Mume S. et Z. (Mume). Roots very few, not 
vigorous. 
Solanaceae. 
Solanum tuberosum L. (Bareisbod). Roots very scanty. 
Leguminosae. 
Pisum sativum L. (Endo). 
Compositae. 
Chrysanthemum sinense Sab. (Kiku). 
Solidago occidentalis Torr, et Gray. (Oawadaebiso). 
Taraxacum officinale Wigg. var. glaucescens (Koeb). (Tan- 
popo). Tbe development of roots not vigorous). 
Of tbese plants Fatsia and Taraxacum did not bring tbe seed 
to germination. Tbis migbt perbaps be due to a comparatively 
weak development of tbe roots as above noticed. On tbe otber 
band, tbe seeds laid on all tbe otber plants mostly germinated 
just as tbey did on Monocotyledons. It must, bowever, be re- 
marked tbat tbe germination did not aU proceed so far in tbeir 
development so to produce tbe bair-tendrils: stopping at tbe stage 
