— 107 
rusticanus, 25, 28, 29. 
— v. ruralis, 27. 
rusticus, 26. 
Salteri, 72. 
Sauli, 32, 32. 
saxicolus, 59. 
scaber, 56, 54, 56. 
scaberrimus, 56, 
— v. pubescens, 56. 
scabridus, 46. 
x scabrosiformis, 77. 
scabrosus, 87, 77, 87. 
x scalarothyrsus, 76. 
Schlechtendali, 15. 
Schleicheri, 54, 50. 
Schmidelyanus, 48. 
— v. breviglandulosus, 
48. 
Schmidelyanus, v. coarctatus, 48. 
— v. ovatus, 48. 
Schultzii, 66. 
secophilus, 20. 
x semibipartitus, 65. 
x semiflexicaulis, 79. 
semivestitus, 87, 87. 
separinus, 22, 45. 
separinus x ulmifolius, 75. 
sepicola, 84, 15. 
sepicolus, 84. 
septicolus, 22. 
septorum, 22, 22. 
serpens, 54, 60. 
serpens x cæsius, 60. 
serpens? x cæsius, 89. 
serriculatus, 26. 
sertiflorus, 76. 
Silvatici, 10. 
Silvatici x Silvatici, 63. 
silvaticus, 15, 17. 
speciosus, 32, 33. 
Spectabiles, 44. 
spectabilis, 23. 
spiculatus, 61, 62. 
spidnostachys, 70, 70. 
x spinosissimus, 89. 
spoliatus, 30. 
squalidus, 52. 
stenopetalus, 67. 
stereacanthus, 18, 19. 
striatus, 27. 
Subdiscolores, 17. 
subemarginatus, 29. 
Suberecti, 4. 
suberectus, 6, 6. 
suberectus x cæsius, 78, 80. 
Suberti, 43. 
sublenis, 27. 
subopacus, 7. 
x substerilis, 67. 
Subtomentosi, 41. 
subtruncatus, 26. 
subvillosus, 66. 
Subvirescentes, 16. 
Sudrei, 53, 53. 
sulcatus, 7, 8. 
tenuiflorus, 43. 
tereticaulis, 60. 
— v. breviglandulosus, 60. 
thamnocharis, 78, 83, 84. 
Thuillieri, 32. 
— v. pomponius, 41. 
thyrsanthus, 40, 35. 
thyrsanthus x cæsius, 78. 
thyrsanthus x (procerus?) 67. 
thyrsanthus x (propinquus ?) 67. 
thyrsiflorus, 55, 74. 
Thyrsoidei, 38. 
thyrsoideus, 39, 29, 34, 39, 40. 
— v. lucidus, 33. 
thyrsoideus x cæsius, 86, 85. 
thyrsoideus-candicans x Lloydia- 
nus, 71. 
thyrsoideus-candicans x ulmifolius, 
67. 
Timbal-Lagravei, 52. 
Tomentosi, 43. 
Tomentosi, x Discolores, 68. 
tomentosus, 43. 
— v. canescens, 44. 
— v. genuinus, 44. 
— v. glabratus, 44. 
— v. prostratus, 44. 
— v. setoso-glandulosus, 
44. 
tomentosus-canescens x ulmifolius , 
69. 
tomentosus-glabratus x adscitus? 66. 
x Toussainti, 74. 
trigonodontos, 86. 
tristifrons, 29, 33. 
Triviales. 60. 
Triviales x Appendiculati 87. 
Triviales, x Discolores 80. 
Triviales x Silvatici 78. 
Triviales x Suberecti, 77. 
Triviales x Tomentosi. 87. 
ulmifolius, 25. 
— v. emarginatus, 74. 
ulmifolius x adscitus, 22. 
ulmifolius > x bipartitus, 65. 
ulmifolius x (Borænus?) 45, 46, 74. 
ulmifolius 7> x Boræanus, 75. 
ulmifolius > x cæsius, 83. 
ulmifolius x Genevieri, 74, 76. 
ulmifolius > x Genevieri, 76. 
ulmifolius x (hypoleucos?) 45, 46, 74. 
ulmifolius x imbricatus, 65. 
ulmifolius x Lloydianus, 69, 43. 
ulmifolius > x Lloydianus, 69. 
ulmifolius x Pseudo-bifrons, 31. 
ulmifolius x tereticaulis, 73. 
ulmifolius x thyrsoideus, 30. 
ulmifolius x tomentosus-canescens, 
68 . 
