— 106 — 
obtusifolius, 44. 
x occiduiformis, 66. 
occiduus, 36, 66. 
— v. discolor, 34. 
occiduus x cardiophyllus, 66. 
occitanicus, 52. 
oligadenes, 12. 
opacus, 7. 
— v. minor, 7. 
oreades, 56. 
oxyanchus, 13. 
pallescens, 28. 
pallidiformis, 58. 
pallidus, 55. 
parvulus, 82. 
patens, 81. 
patulus, 28, 28. 
pedatifolius, 11. 
x perfrondosus, 65. 
pervagus, 12. 
phyllostachys, 40, 40. 
piletocaulon, 77. 
Piletosi, 14. 
piletostachys, 14. 
piletostachys x thyrsoideus, 40. 
platyacanthus, 10. 
plicatus, 4. 
— v. rosulentus, 4, 5. 
plicatus x cæsius, 77. 
plinthostylus, 59. 
podophyllus, 46. 
x polyanchoides, 65. 
polyanthemus, 21. 
x polyanthus, 71, 7 l. x 
— v. albomicans, 71. 
x prælongus, 68. 
prætermissus, 17, 18. 
prætervisus, 29. 
Preauberti. 39. 
procerus, 35, 18. 
procerus > x cæsius, 85. 
x propinquiformis, 66. 
propinquus, 30. 
— v. acuticuspis, 32. 
— v. confusus, 32. 
propinquus x cæsius, 85, 31, 86. ! 
propinquus x emollitus-falcatispinus. 
67. 
propinquus x (Lloydianus?) 71. 
propinquus x tomentosus-canescens, 
69, 71. 
propinquus x ulmifolius, 66. 
Provosti, 61, 61, 82. 
x Pseudo-adscitus, 72. ^ 
Pseudo-bifrons, 32. 
Pseudo-bifrons x Questieri, 65. 
x Pseudo-Boræanus, 74. 
Pseudo-danicus, 14. 
Pseudo-idæus, 6, 6. 7. 
pseudopsis, 60. 
pubescens, 34, 22, 34, 35, 40. 
pubescens x (Genevieri?) 76. 
pubescens x Lloydianus, 42. 
pubescens-emollitus x Lloydianus, 
71. 
pubescens-falcatispinus x Lloydia 
nus, 43. 
x pulverulentus, 68. 
purpureus, 41. 
pycnanthus, 20. 
pygmæus, 50. 
pyramidalis, 14. 
— v. anadenes, 14. 
pyramidalis x cæsius, 82. 
pyramidatus, 20, 40. 
quadicus, 46. 
Questieri, 13. 
— v. apricus, 14. 
— v. discolor, 18. 
— v. fallax, 13. 
Questieri x cæsius. 78. 
Questieri x hedycarpus, 34, 36. 
Questieri x (imbricatus?) 63. 
Questieri x thyrsoideus, 11, 40. 
Questieri x ulmifolius, 64, 11, 13, 
15, 66. 
Radula, 49, 49, 50, 58. 
Radulæ, 48. 
recognitus, 17. 
— v. bipartitus, 17. 
regalis, 8. 
Reichenbachii, 18. 
retrodentatus, 53. 
retrogressus, 61, 62. 
Reuteri, 59, 52. 
rhamnifolius, 14. 
rhombifolius, 8. 
x rhomboidalis, 86. 
x rigidispinus, 67. 
rivalis, 61. 61. 
rivularis? x cæsius, 89. 
robustus, 36, 33, 36. 
— v. angustatus, 34. 
— v. contractus, 32. 
— v. flore pleno, 41. 
rosaceus, 52, 47, 54, 58. 
roseiflorus, 81, 80, 81. 
x roseipetalus, 70. 
— v. spidnostachys, 70. 
— v. uncinellifer, 70 , 
69. 
roseolus, 40. 
rosulentus, v. oblongifolius, 6. 
rotundellus, 59, 26. 
— y. cuspidatus, 59. 
rubrans, 58, 49. 
Rudes, 55. 
rudicaulis, 49. 
rudiformis, 56. 
rudis, 56, 49, 50, 51, 57. 
rupestris, 88. 
Rusticani, 25. 
