2, 
Or 
10. 
it 
IZ. 
16. 
i 
SELECTED LITERATURE 
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Hirmer, M. 1920. Beitrige zur Organographie der Orchideen- 
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. Lindley, J. 1836. A Natural System of Botany, ed. 2. London, 
Longman, Rees, Orme, Brown, Green and Longman. 
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