45808
Meissner did not explicitly give an etymology for the varietal epithet , but referred to the leaves as cordatis , Latin for " heart-shaped " , and this is now universally recognised as the source of the name .
 Meissner
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Meissner