Pliysioiogical Re 浸 © archer on the S 贷 xuality of the 
Flower 沒 of Pinus den が flo;ra Sieb. et Zucc 。 
げ '化 Uminarq じりり imunica 柄 on .) 
BY 
Kenjiro Fujii, Riyakmhi. 
Post- graduate student in Botany: Imp. Umv. Tokyo, Japan. 
Many instances of aiidrog 7110 us cones of coiiiters are on record. As 
to the pin が , Masters describes h が luaphrodite flow が s of Pinus rigida 
and P, Thunbergvi 产 and the formation of も male or hermaphrodite flowers 
in the portions of male flow が s and tlmt of male or hermaphrodite 
flowers in the positions of female flowers of Pinus densijiora were described 
化 few years ago by *1 \ Matsuda.** Strasburoer, EIichl 旺 r, and many 
other authors have made very extensive aud valuable studies o 打 the flowers 
and じ ones of conifers, but their theoretical considerations are chiefly 
about the purely morphological points. We find, kowever, many special 
が ndies by various workers un the causes which determine the sexes of 
llowers, but such Judies are not yet fully worked out I need not 
comment on the. great importance of れけ比 er researches on this subject. 
During the last three yea が I have observed in Pinus dens が ora in 
various locaHties と i gi.eat number of お! mile or herma]；)lirodite flowers 
developed in the (胤’ Uon of male flowers， and ん unci that the formation 
of such flow 別 ’s are iu 化 great mea が u’e limited to the " Langfcriebe " which 
are tra 打 sl:’onued れ om パ Kurzt:,i.iel>e ，， of the last year ; that such trans- 
formation of Kufztriel)e ，， into ‘‘ Langtriebe ，， I’eg’ulai’ly takes place when 
‘‘ Langtriebe " are seriously mjiu.ecl in any way ; and that 化 e (‘ Kurztriebe 
which are traiisfor 阻が 1 into " Langtriebe ，， are け lose which stand nea が st 
to the point of injury of the バ Lang か ielw. In fact, the injuries pro- 
duciiig such effect arc む equently given by Ja})aiiese gcirdenery to the shooib 
の le Jour 化 il of り le Liim 別 n Society, Vol. XXVI I, ]». 313. 
の le Bolauical Magazine, Vol. VJ, p. 2 孤. 
