Half Races nnth Heritable Fasciatioii. 



505 



Acacia, Salix purpurea^ Sali.v alba, Spiraea callosa atro- 

 purpiirea. Moreover I have obtained, by the kiiKhiess 

 of Prof. W. Jo HAN N SEN of Copenhagen, beautiful broad 



Fig. 113. HeliantliKS tuhcrosus. A fasciated stem which is 

 spHt into two ahiiost equal fork-branches b and c, at the 

 node marked a. From the fork there arise two leaves d 

 the mid-ribs of which have fused along their dorsal side/ 



fasciations of the underground stems or runners of Spi~ 

 raea sorbifolia from the nursery of Air. Zeiner Lassen 

 in Helsingor. Instances of the same fasciations have 



I have also observed this remarkable occurrence of fusing by 

 the backs in leaves in the forks of split twigs, in Robinia Pscud- 

 Acacia and Evonymiis japonica (Pkingsheim, Jahrb. f. zviss. Bot., 

 XXIII, p. 81) and also in Collinsia hcteropJiylla (1892), Epilobiiiiii 

 InrsHfiiin (1892), Echhim vtilgarc (1892), CJirysantlicmum scgctum 

 (i(S92). AgrostemmaGithago (1892 and 1894), Acer Pscudo-Platanus 

 (1891), Crcpis biennis (1893), Aniarantus speciosiis (1894), Mercu- 

 rialis annua (1894) and Lamiuni purpureuni (1895). 



