422 BEKBEHTBEAKUM JAPONF^ CONSPECTUS. 



petals of the hybrid are in form like those of (7. longifoUum, 

 while their colour is that of (7. SchUmii. 



The changes which occur in this and other hybrid plants and 

 their derivatives may be ranged under three categories : 



1. Those in which there is an intermixture of parental cha- 

 racteristics, in varying degrees, but without any material change 

 in the floral symmetry. The changes, in fact, occur in those cha- 

 racters which are more or less directly of an " adaptive " nature. 



2. Those in which there is in the offspring more or less dis- 

 sociation of the hybrid or mixed characters of the parents, so 

 that the plant reverts more or less completely to one or other of 

 its immediate parents, as pointed out by Naudin. 



3. Those in which the change is decidedly teratological, and 

 more or less affecting those " congenital " characters which con- 

 stitute the symmetry of the flower. These maybe : 1, reversions 

 to an ancestral form, in which the structure was simpler, less 

 differentiated, the parts possibly more numerous, and isolated 

 rather than inseparate ; or, 2, they may possibly be indications oi 

 the direction in which progressive modifications may take place 

 in the future. 



XX 



reloriate flower of Selenipedium oaudatum, real size (see p. 419). A, section of 

 ovary, magn. 4 diam. ; B, side views of column, enlarged 3 times. A i A2 A3, 

 staminode ; A2, A3 are probably not separate stamens of the outer row as 

 the lettering would indicate, but merely subdivisions of Ai ; ai, ai,az, 

 fertile stamens of the inner row ; Sm, stigma. In the plan the signification 

 of the letters is the same. 



BerLeridearum Japoniae Conspectus, auctore Tokutaro Ito- 

 (Communicated by W. T. Thiseltow DfEB, C.M.G., F.E.S., 



r.L.S.) 



[Eead 4th November, 1886.] 



XXI 



XoTAS qu« de Japonicis Berberidaceis sequentur auctor compo- 

 suit eo tempore quo in Herbario Kewenai Aprili prsesentis anni 

 suuin Tlorula Fudsisaneusis ' parabat, cujus partem lijec con- 

 stituit. Quum tamen rem diligenter cogitavisset in conclusionem 

 perveuit si tales notas intra fines flora localis inseruisset hanc de 

 toto esse permixturum sed amicis eximiis ell. Prof. Dan. Oliver 

 et W. T. Thiseltnn T)\-pr Vioni'rrTi^ «^T,c,,,7cTif,'V%i.fl mictori ppr- 



