PLATE 1. 
PLATE 2. 
PLATE 
PLATE 
PLATE 
PLATE 6. 
PLATE 7. 
PLATE 8. 
PLATE 9. 
PLATE 10. 
PLATE II. 
PLATE 12. 
PLATE 13. 
PLATE 14. 
PLATE 15. 
PLATE 16. 
PLATE 17. 
PLATE 18. 
PLATE 19. 
PLATE 20. 
PLATE 21, 
PLATE 22. 
PLATE 23. 
APS 
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ILLUSTRATIONS. 
PLATES. . FACING 
PAGE. 
Plant of Coryphantha runyonii from Texas. (2) Plant of Dolichothele sphaerica from 
TEXAS. cece eect e bbe b bbb bbb ebb bees ccc. Frontispiece 
Fruiting plant of Coryphantha neo-mexicana. (1a) Fruit of same. (2) Top of flowering plant 
of Ancistrocactus scheeri. (3) Flowering plant of Cochemiea poselgeri. (3a) Fruit of 
same. (3b) Seed of same. (4) Flowering plant of Coryphantha cornifera............. 4 
Coryphantha nickelsae from Monterey, Mexico. (2) Neobesseya similis from Texas........ 34 
Coryphantha aggregata from Arizona.........0.0000 00. c cece cece cc ceccccccec el 46 
A flowering plant of Coryphantha cubensis. (1a) Fruit of same. (1b) Tubercle of same. 
(2) Flowering plant of Neomammillaria confusa. ( 3) Flowering plant of Neomammillaria 
geminispina. (4) Top of flowering plant of Coryphantha durangensis. (5) A flower- 
ing plant of Coryphantha arizonica. (6) Flowering plant of Coryphantha bumamma. 
(7) Flowering plant of Coryphantha chlorantha................................... 48 
Escobaria runyonii from Texas. (2) Neomammillaria hemisphaerica from Texas.......... 56 
Flowering plant of Escobaria dasyacantha. (2) Fruit of Dolichothele sphaerica. (2a) Seed 
of same. (3) Flowering plant of Neomammillaria arida. (4) Flowering plant of 
Escobaria bella. (4a) Tubercle of same. (5) Flowering plant of Neomammillaria croci- 
data. (6) Flowering plant of Bartschella schumannii. (7) A flowering plant of Neo- 
mammillaria carnea.... 2.6... cece cence cece eee e cee ee eee ce, 58 
Fruiting plant of Neomammillaria gaumeri. (2) Flowering plant of Neomammillaria heyderi. 
(2a) Fruit of same. (3) Flowering and fruiting plant of Neomammillaria hemisphaerica. 
(4) Flowering plant of Neomammillaria compressa. (5) Flowering plant of Neomam- 
millaria geminispina. (6) Flowering plant of Neomammillaria hemisphaerica........ 72 
Flowering and fruiting plant of Neomammillaria applanata. (2) Top of fruiting plant of Neo- 
mammillaria karwinskiana. (3) Top of flowering plant of Neomammillaria aureiceps. 
(4) Flowering plant of Neomammillaria macracantha. (5) Fruiting plant of Neomam- 
millaria mystax.. 20... eect e cece cel c eee eeee 76 
Coryphantha sulcata from Sabinal, Texas. (2) Neomammillaria runyonii frcm Monterey, 
MEXICO... e tect nett tte b eee le cece! 80 
Flowering plant of Neomammillaria magnimamma. (2) Flowering plant of Neomammillaria 
karwinskiana. (3) Fruiting plant of Neomammillaria gigantea. (4) Fruiting plant of 
Neobesseya missouriensis................000.00 cc cesses cece eee 96 
Flowering plant of Neomammillaria pseudoperbella. (2) Top of flowering plant of Neomam- 
millaria spinosissima. (3) Flowering plant of Neomammillaria dealbata. (4) Flowering 
plant of Neomammillaria amoena. (5) Flowering plant of Neomammillaria polyedra. 
(6) Flowering plant of Neomammillaria celsiama.. 2.0... eee eee eee. 110 
Neomammillaria wilcoxii from Calabasas, Arizona. (2) Neomammillaria gaumeri from 
Yucatan, Mexico. .... 0.6... eee c eect eeeecececeeceeee 154 
Flowering plant of Neomammillaria kunzeana. (2) Flowering plant of Neomammillaria 
bocasana. (3) Flowering plant of Neomammillaria decipiens. (4) Top of flowering 
plant of Neomammillaria armillata. (5) Flowering plant of Neomammillaria multiceps. 
(6) Flowering plant of Neomammillaria multiceps. (7) Flowering plant of Neomam- 
millaria palmeri. (8) Flowering plant of Neomammillaria wildii.................... 156 
Flowering plant of Neomammillaria bombycina. (2) Flowering plant of Neomammillaria 
armillata. (3) Top of flowering plant of Neomammillaria armillata. (4) Flowering plant 
of Neomammillaria armillata. (5) Flowering plant of Neomammillaria goodridgei...... 158 
Flowering plant of Epiphyllum darrahii. (2) Top of flowering plant of Epiphyllum pittieri. . . 190 
End er branch of Epiphyllum macropterum. (2) Base of branch of Epiphyllum macrop- 
Sette ttt ne teste ete tenet eee eect cette eect eee t tener esc ree eee so. 192 
Epiphyllum pittieri from Costa Rica.......0 0 -_ 
Epiphyllum hookeri from Tobago, West Indies..........................000000 000 198 
Eccremocactus bradei from Costa Rica....... 204 
(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 
PT en eee eee ee eee eee ence e cece eeeeee 208 
Flowering branch of Pfeiffera ianthothele. (2) Flowering and fruiting branch of Lepismium 
cruciforme. (3) Top of fruiting branch of Pfeiffera 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...... 0.0... en 210 
Flowering branch of Hatiora cylindrica. (2) Fruiting branch of Rhipsalis hetcroclada. 
(3) Fruiting branch of Rhipsalis cribrata. (4) Flowering branch of Hatiora salicornioides. 218 
IV 
a RS Se ee ee ee ee 
