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" Apocynum venetum " , commonly known as " sword-leaf dogbane " , is a plant species in the dogbane family , poisonous but used as a source of fiber , medicine , and nectar for production of honey .
 dogbane family
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:
 dogbane family