110109
Runoff from seasonal rains and groundwater springs forms desert arroyos , desert fan palm oases , freshwater marshes , brine lakes , desert washes , ephemeral and perennial streams , and desert riparian vegetation communities dominated by cottonwood , willow , and non-native tamarisk .
 willow
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:
 willow