ILLUSTRATIONS. 



PLATES — continued. 



Plate 24. (i) Flowering branch of Rhipsalis leucorhaphis. (2) Fruiting branch of Rhipsalis leucorhaphis. 

 (3) Fruiting branch of Rhipsalis megalantha. (4) Fruiting branch of Rhipsalis neves- 

 armondii. (5) Fruiting branch of Rhipsalis neves-armondii. (6) Fruiting branch of 

 Rhipsalis pittieri. (7) Flowering and fruiting branch of Rhipsalis shaferi. (8) Fruiting 

 branch of Rhipsalis aculeata. (9) Fruiting branch of Rhipsalis mesembryanthemoides. 

 (10) Flowering branch of Rhipsalis mesembryanthemoides 220 



Plate 25. (i) Fruiting branch of Rhipsalis heteroclada. (2) Fruiting branch of Rhipsalis heteroclada. 



(3) Fruiting branch of Rhipsalis capilliformis. (4) Fruiting branch of Rhipsalis virgata. 222 



Plate 26. (i) Flowering branch of Rhipsalis cribrata. (2) Fruiting branch of Rhipsalis capilliformis. 

 (3) Flowering branch of Rhipsalis capilliformis. (4) Flowering branch of Rhipsalis 

 capilliformis. (5) Flowering branch of Rhipsalis teres 224 



Plate 27. (i) Flowering and fruiting branch of Rhipsalis cassutha. (2) Fruiting branch of Rhipsalis bur- 



chellii. (3) Flowering branch of Rhipsalis cereuscula 226 



Plate 28. (i) Flowering branch of Rhipsalis neves-armondii. (2) Flowering branch of Rhipsalis parado.\a. 

 (3) Fruiting branch of Rhipsalis pulvinigera. (4) Flowering branch of Rhipsalis tucu- 

 manensis. (5) Fruiting branch of Rhipsalis tucumanensis 228 



Plate 29. (i) Flowering branch of Rhipsalis floccosa. (2) Flowering branch of Rhipsalis floccosa. 

 (3') Fruiting branch of Rhipsalis puniceo-discus. (4) Flowering branch of Rhipsalis 

 gibberula. (5) Branch of Rhipsalis dissimilis. (6) Flowering and fruiting branch of 

 Rhipsalis dissimilis 230 



Plate 30. (i) Fruiting branch of Rhipsalis gonocarpa. (2) Flowering branches of Rhipsalis warmingiana. 

 (3) Fruiting branch of Rhipsalis tonduzii. (4) Fruiting branch of Rhipsalis trigona. 

 (5) Flowering branch of Rhipsalis pentaptera. (6) Fruiting branch of Rhipsalis penta- 

 ptera 232 



Plate 31. (i) A flowering branch of Rhipsalis grandiflora. (2) Flowering branch of Rhipsalis pulchra. 



(3) Flowering branch of Rhipsalis grandiflora 234 



Plate 32. (i) A fruiting branch of Rhipsalis heteroclada. (2) Fruiting branch of Disocactus biformis. 

 (3) Flowering and fruiting branch of Rhipsalis prismatica. (4) Flowering branch of Rhip- 

 salis coriacea. (5) Fruiting branch of Rhipsalis coriacea. (6) Fruiting branch of Rhip- 

 salis dissimilis. (7) Branch of Rhipsalis dissimilis 236 



Plate a. (i) Flowering branch of Rhipsalis houUetiana. (2) Flowering branch of Rhipsalis houlletiana. 



(3) Flower of Rhipsalis houlletiana. (4) Fruiting branch of Rhipsalis houUetiana 238 



Plate 34. (i) Flowering branch of Rhipsalis houlletiana. (2) Flower of Rhipsalis houlletiana. (3) Fruiting 



branch of Rhipsalis warmingiana. (4) Fruiting branch of Rhipsalis warmingiana 240 



Plate 35. (i) Fruiting branch of Rhipsalis oblonga. (2) Fruiting branch of Rhipsalis elliptica. (3) Flower- 

 ing branch of Rhipsalis crispata 242 



Plate 36. (i) Flowering branch of Rhipsalis pachyptera. (2) Flowering branch of Rhipsalis rhombea. . . . 244 



Plate 37. (i) A flowering branch of Rhipsalis russellii. (2) Cluster of flowers of Rhipsalis russellii. (3) En- 

 larged flower of Rhipsalis russellii. (4) Fruiting branch of Rhipsalis russellii. (s) Fruiting 

 branch of Rhipsalis crispimarginata. (6) Fruiting branch of Rhipsalis pachyptera 246 



TEXT-FIGURES. 



PAGE. 



1. Ancistrocactus megarhizus 4 



2 . Ancistrocactus scheeri 5 



3. Ancistrocactus brevihamatus 5 



4. Thelocactus rinconensis 7 



5. Thelocactus ph>Tnatothele 7 



6. Thelocactus buekii 9 



7. Thelocactus leucacanthus 9 



8. Thelocactus nidulans 10 



9. Thelocactus fossulatus 10 



10. Thelocactus tulensis 1 1 



1 1 . Thelocactus bicolor 11 



12. NeoUoydia pilispina 14 



13. NeoUoydia horripila 14 



14. NeoUoj'dia clavata 15 



15. NeoUoydia conoidea 15 



16. NeoUoydia ceratites 17 



17. NeoUoydia conoidea 17 



18. NeoUoydia texensis 18 



19. MamUlopsis senilis 19 



20. Mamillopsis senilis 19 



21. Mamillopsis senilis 20 



PAGE. 



Fig. 22. Cochemiea halei 21 



23. Cochemiea poselgeri 21 



24. Fruit and seed of Cochemiea pondii 23 



24a.Fruit and seed of Cochemiea pondii 23 



25. Tubercles of Coryphantha macromeris .. . 25 



26. Coryphantha recurvata 27 



27. Coryphantha recurvata 27 



28. Coryphantha muehlenpfordtii 29 



29. Coryphantha bimiamma 29 



30. Coryphantha erecta 32 



31. Coryphantha erecta 32 



31a. Coryphantha pectinata 35 



316. Coryphantha echinus 35 



32. Coryphantha nickelsae 36 



33. Coryphantha compacta 36 



34. Coryphantha radians 37 



35. Coryphantha sulcolanata 37 



36. Coryphantha retusa 38 



37. Coryphantha salm-dyckiana 38 



38. Coryphantha paUida 40 



39. Coryphantha pycnacantha 40 



