194 



to me by a student a few days ago. (She called it "Siamese- 

 twin Jack-in-the-pulpit.") P;_Thinking the readers of Torreva 

 might be interested, I sketched it off and send it^to you. While 



Fascialion in Arisaema. 



the spathe is separated-all the way down, the spadix bears only 

 a slight indentation.* 



Two summers ago at Cold Spring Harbor, I found an illustra- 

 tion of fasciation in a Ritdbcckia hirta. The disk was elongated, 

 making three turns of a spiral and would measure at least four 

 inches in length I should say, though the width was normal. 

 The plant stem was three quarters of an inch wide and perfectly 

 flat. 



* W. W. Bailey (Bot. Gaz. 9: 177. 1884) alludes to a specimen of Arisaema 

 triphylluTii from Minnesota, with a "double spathe including a single spadix." 

 Miss Alice G. Clark of East Weymouth, Mass., describes and illustrates (Rhodora 6 : 

 163. 1904) an Arisaema inflorescence with two spathes and three spadices. 



