33856
Where grazing is excessive this covering is soon reduced , and an impoverished batha remains , consisting principally of " Thymus capitatus " , " Sarcopoterium spinosum " , and a few stunted herbs .
 Thymus, Sarcopoterium
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Thymus, Sarcopoterium