Explanation of Pl. XI. 



BuJbopJii/Ilum Jiraiciisc Hayata. 



Fig. 1. The pkut. 



2. Central portiuu ot' a iiower. 



3. A clorsal sepal. 



4. A lateral sepal. 



5. A x>et''il. 



G. Colurnu, rueutuiu aud lip. 



7. The same, seeu from a diiferent side. 



