74237
If this is true , then " O. lancea " and " O. japonica " should either be regarded as varieties of " O. regalis " , or , conversely , " O. regalis var. spectabilis " should be regarded as a separate species , " Osmunda spectabilis " Willdenow .
 Willdenow
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Willdenow