366 PROCEEDINGS OF THE INDIANA ACADEMY OF SCIENCE. 



plants grew well, but no flowers were produced until the regular flowering 

 time for the species, the plants having been transplanted outside in the 

 meantime. Then many inflorescences appeared, and several seeds matured 

 during the summer and fall. 



Fig- 2 — Inflorescences. Above, normal inflorescences of different ages; below, com- 

 pound ill florescences of the abnocnuil foiin. 



Throughout the period of ol).servalion, the striking feature has been 

 the shape; and structure of the flower cluster. Tlie lujrmjil infloresc(>nce of 

 the species is a s|)ike; that is, the flowers are sessile on a singk; common axis; 

 l)ut in tills plant the inflorescence is made up of a number of short, conical 

 spikes arranged in a conical aggregation around the end of the scape as a 

 central axis. In many instances the stalks of these spikes are considerably 

 elongated. (See the figures for a comparison of the variation with the type 

 form.) 



