Tricotyly ami the .Irramjcmcul of I.raics. 37? 



in spite of their origin from IricoLylous parents, prt^duced 

 considerably fewer fasciations than the triccjtyls. 



We come now to the spiral torsions. Idiese occurred 

 in several of my tricotylous races nearly every year since 

 1893, and often in considerable numbers. As a rule they 



Fig. 79. Aspcrula azurea. 



l*"ig". «So. Mclaiiipyniiit pratensc'. 

 Tetracotylous plant with spiral 

 arrangement of leaves (iiSS/). 



consisted of fairly long, much twisted sections of the 

 main stem, or of the stronger lateral branches which 

 abutted above and below on the normal or decussate 

 sections. They bore their leaves sometimes in a \ery 

 steep spiral and sometimes in an unbroken line on one 



