24457
The spadix is unique by having the male flowers ( except for those at the tip of the spadix ) each associated with a sterile female flower ( a pistillode ) in addition to each fertile female flower being associated with a sterile male flower ( staminode ) .
 spadix
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 spadix