ILLUSTRATIONS. 



PLATES. 5''^'=^^'° 



P.\GE. 

 Plate i. (i) Plant of Cor>-pliantha runj-onii from Texas. (2) Plant of Dolichothele sphaerica from 



Texas Frontispiece 



Plate 2. (i) Fruiting plant of Coryphantha neo-mexicana. (la) Fruit of same. (2) Top of flowering plant 

 of Ancistrocactus scheeri. (3) Flowering plant of Cochemiea poselgeri. {3a) Fruit of 



same. (36) Seed of same. (4) Flowering plant of Coryphantha comifera 4 



Plate 3. (i) Cor\-phantha nickelsae from Monterey, Mexico. (2) Neobesseya similis from Texas 34 



Pl-ate 4. Corj-phantha aggregata from Arizona 46 



Pl.ate 5. (i) A flowering plant of Coryphantha cubensis. (la) Fruit of same. (16) Tubercle of same. 



(2) Flowering plant of Xeomammillaria confusa. (3) Flowering plant of Neomammillaria 

 geminispina. (4) Top of flowering plant of Corj-phantha durangensis. (5) A flower- 

 ing plant of Cors-phantha arizonica. (6) Flowering plant of Coryphantha bumamma. 



(7) Flowering plant of Corj-phantha chlorantha 48 



PL.ATE 6. (i) Escobaria runyonii from Texas. (2) Xeomammillaria hemisphaerica from Texas 56 



Plate 7. (i) Flowering plant of Escobaria dasyacantha. (2) Fnait of Dolichothele sphaerica. (2a) Seed 

 of same. (3) Flowering plant of Xeomammillaria arida. (4) Flowering plant of 

 Escobaria bella. (4a) Tubercle of same. (5) Flowering plant of Xeomammillaria croci- 

 data. (6) Flowering plant of Bartschella schumannii. (7) A flowering plant of Xeo- 

 mammillaria camea 58 



Plate 8. (i) Fruiting plant of Xeomammillaria gaimieri. (2) Flowering plant of Xeoma mm illaria heyderi. 

 (2(2) Fruit of same. (3) Flowering and fruiting plant of Xeomammillaria hemisphaerica. 

 (4) Flowering plant of Xeomammillaria compressa. (5) Flowering plant of Xeomam- 

 millaria geminispina. (6) Flowering plant of Xeomammillaria hemisphaerica 72 



Plate 9. (i) Flowering and fruiting plant of Xeomammillaria applanata. (2) Top of fruiting plant of Xeo- 

 mammillaria kanvinskiana. (3) Top of flowering plant of Xeomammillaria aureiceps. 

 (4) Flowering plant of Xeomammillaria macracantha. (5) Fruiting plant of Xeomam- 

 millaria mystax 76 



Plate 10. (i) Cor\-phantha sulcata from Sabinal, Texas. (2) X'eomammillaria runyonii from Monterey, 



Mexico 80 



Pl.-^te II. (i) Flowering plant of Xeomammillaria magnimamma. (2) Flowering plant of Xeomammiillaria 

 kam-inskiana. (3) Fruiting plant of Xeomammillaria gigantea. (4) Fruiting plant of 



Xeobesseya missouriensis 96 



Pl-ATE 12. (i) Flowering plant of Xeomammillaria pseudoperbeUa. (2) Top of flowering plant of Xeomam- 

 millaria spinosissima. (3) Flowering plant of Xeomammillaria dealbata. (4) Flowering 

 plant of Xeomammillaria amoena. (5) Flowering plant of Neomammillaria polyedra. 



(6) Flowering plant of Xeomammillaria celsiana no 



Plate 13. (i) Neomammillaria wilcoxii from Calabasas, Arizona. (2) Neomam miliaria gaumeri from 



Yucatan, Mexico 154 



Plate 14. (i) Flowering plant of X'eomammiUaria kunzeana. (2) Flowering plant of Neomammillaria 

 bocasana. (3) Flowering plant of Xeomammillaria decipiens. (4) Top of flowering 

 plant of Xeomammillaria armillata. (j) Flowering plant of Xeomammillaria multiceps. 

 (6) Flowering plant of Xeomammillaria multiceps. (7) Flowering plant of Xeomam- 

 millaria palmeri. (8) Flowering plant of Xeomammillaria -n-ildii 156 



Plate 15. (i) Flowering plant of Xeomammillaria bombycina. (2) Flowering plant of Xeomammillaria 

 armillata. (3) Top of flowering plant of Xeomammillaria armillata. (4) Flowering plant 



of Xeomammillaria armillata. [=,) Flowering plant of Xeomammillaria goodridgei 158 



Pl-ATE 16. (i) Flowering plant of Epiphyllum darrahii. (2) Top of flowering plant of EpiphyUum pittieri . . . 190 

 Pl.ate 17- (i) End of branch of Epiphyllum macropterum. (2) Base of branch of Epiphyllum macrop- 



terum 192 



Plate 18. Epiphyllum pittieri from Costa Rica 194 



PL.'i.TE 19. Epiph\-llum hookeri from Tobago, West Indies 198 



Pl.ate 20. Eccremocactus bradei from Costa Rica 204 



Plate 21. (i) Fruiting branch of Rhipsalis grandiflora. (2) Flowering branch of Rhipsalis lindbergiana. 



(3) Fruiting branch of Rhipsalis shaferi. (4) Flowering and fruiting branch of Rhipsalis 

 lindbergiana. (5) Flowering plant of Erythrorhipsalis pilocarpa. (6) Flowering branch 



of Rhipsalis grandiflora 208 



Plate 22. (i) Flowering branch of Pfeiflera ianthothele. (2) Flowering and fruiting branch of Lepismium 

 cruciforme. (3) Top of fruiting branch of Pfeifi'era ianthothele. (4) Flowering and 

 fruiting branch of Rhipsalis jamaicensis. (5) Flowering branch of Pseudorhipsalis alata. 

 (6) Flowering and fruiting branch of Pseudorhipsalis himantoclada. (7) Flowering 



branch of Pfeiffera ianthothele 210 



Plate 23. (i) Flowering branch of Hatiora cylindrica. (2) Fruiting branch of Rhipsalis heteroclada. 



(3) Fruiting branch of Rhipsalis cribrata. (4) Flowering branch of Hatiora salicomioides . 218 



IV 



