Zxplanation of Pl. XX. 



(ralcra kusukn.scmis Hayata. 



Fig. 1. The plaut. 



2. A scale ou a rliaeliis. 



3. A ilower. 



4. Tlie same, segments expaudecl. 



5. A cloi-sal sepal. 



6. A petal. 



7. lip, seeu froni face. 



8. The same, seen from side. 



9. A cohmm and au anther, seeu from side. 



10. A columu, auther takeu ofi'. 



11. Au autlier. 



