81339
Factors such as soil moisture , solar radiation , and rockiness of soil influence species composition along an elevation gradient , resulting in certain shrub species , such as " Adenostoma fasciculatum " and " Arctostaphylos glauca " , being present in elfin forest habitats .
 Adenostoma fasciculatum, Arctostaphylos glauca
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:
 Adenostoma fasciculatum, Arctostaphylos glauca