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Some ( such as " Calothamnus aridus " ) are adapted to a dry environment whilst others ( such as " Calothamnus hirsutus " ) are often found near swamps .
 Calothamnus aridus, Calothamnus hirsutus
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:
 Calothamnus aridus, Calothamnus hirsutus