ILLUSTRATIONS. 



plater. Fadnfipape. 



Plate 1. Lycopodium tuerckheimii 23 



2. Polystichum christianae 30 



3. Polystichum decoratum 31 



4. Polystichum dissimulans and P. harrisii 31 



5. Polystichum heterolepis 32 



6. Polystichum longipes 34 



7. Polystichum rhizophorum 36 



8. Polystichum struthionis 37 



9. Polystichum underwoodii 38 



10. Echeveria setosa Rose & Purpus 45 



11. Echeveria subalpina Rose & Purpus 45 



12. Echeveria gigantea Rose & Purpus 46 



13. Rosette of Echeveria gigantea Rose & Purpus 46 



14. Echeveria gigantea Rose & Purpus 46 



15. Poa paucispicula Scribn. & Merr 69 



16. Poa lanata Scribn. & Merr 72 



] 7. Cyphomandra naranjilla Pittier 1 17 



18. Cyclanthera pedata Schrad 122 



19. Elateriopsis oerstedii (Cogn.) Pittier 125 



20. Polakoicskia tacaco Pittier 131 



21 Relief map of New Mexico 143 



22. Castilla ulei Warburg 263 



23. Castilla tunu Ilemsl 264 



24. Castilla australis Hemsl 267 



25. Castilla daguensis Pittier 268 



26. Castilla lactiflua Cook 269 



27. Castilla lactiflua Cook 269 



28. Castilla lactiflua Cook 269 



29. Castilla costaricana Liebm 270 



30. Castilla costaricana Liebm 270 



31. Castilla costaricana Liebm 270 



32. Castilla costaricana Liebm 270 



33 . Castilla costaricana Liebm 270 



34. Castilla costaricana Liebm 270 



35. Castilla guatemalensis Pittier 274 



36. Castilla guatemalensis Pittier 274 



37. Castilla guatemalensis Pittier 274 



38. Castilla guatemalensis Pittier 274 



39. Castilla guatemalensis Pittier 274 



40. Castilla nicoyensis Cook 276 



41. Castilla nicoyensis Cook 276 



42. Castilla nicoyensis Cook 276 



43. Castilla elastica Cook 277 



44. Talinum palmeri Rose & Standley 284 



XIII 



