A plant suitable for classroom demonstration of growth 

 Const. J. Alexopoulos 



During the progress of some growth studies on a species of 

 Anthostomella, it occurred to the writer that this fungus might 

 be of value for study and demonstration of rapid growth in 

 elementary classes in Botany and Biology and that teachers 

 engaged in this work might be interested in knowing the facts 

 presented in this note.* 



The particular species of Anthostomella under investigation, 

 presumably a saprophyte, was isolated from diseased bark of 

 Elm by Mr. H. H. Harris in 1932 and has been growing in pure 

 culture since then. 



This fungus makes a rapid growth on agar media at room 

 temperature and may conveniently be used in the classroom 

 for growth studies. Growth of the mycelium issuing from the 

 ascospore is sufhciently rapid to enable the student to detect 

 differences in length of the mycelial tubes under the microscope 



' The writer will be glad to furnish a transfer of the organism to anyone 

 interested, upon receipt of a sterile slant of nutrient agar. 



