32950
" Potamogeton lucens " , or " shining pondweed " , ) , " P. perfoliatus " ( " P. " × " salicifolius " ) , " P. alpinus " ( " P. " × " nerviger " ) , " P. nodosus " ( " P. " × " subrufus " ) " P. sarmaticus " ( " P. " × " pseudosarmaticus " ) , " P. crispus " ( " P. " × " cadburyae " ) , " P. praelongus " ( " P " .
 P. alpinus, P. nodosus
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:
 P. alpinus, P. nodosus