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THE GENERA OF BRITISH PLANTS,
According to their mutual relations, with the nitmher of
PLANTS CELLULOS2E.
1 A. Pl„ CELL. APHYLLEjE.
I. HydropJiytcc,
A. i, Vagiiiaria t
2. Oscillatoria 5
3. Ihiniida 3
4. Eli^a 9
5. Rivularia 4
6. Scytonema 5
B. 1. Gifaidia 2
C. 8, Lemania 2
D. 9. Brjopsis 1
10, Vaiichcria IS
11. Codiiiin 2
E. 12. Fragillaria 3
13. Biddulphia 3
14, Diatorria 4
F. 15. Zygnema 2
16. Conjngata 7
n. Choaspis 1
18. Agardhia 1
19. Serpeiitiiiaria 2
O, 20. Hydrodictyon 1
IL 21. Chaetophora I
22. Leathesia 1
23. Myriodactylon 2
24. DraparnaldJa 2
23. Conferva ....53
2. ThalassinphytcE.
A. 26. Mesogloja .'. . , 1
27. Bulbochffite 1
28. Ectocarpus G
29. Callithamnion ..17
30. Ceramium.... 3
31. Griffitsia. 3
32. Borrichius.. 1
33. Batrachospermum 2
B. 34. CladostephuB 3
35. Spliacelaria 5
36. EUisius 2
37. Hutchinsia 17
3S^ Vertebrata. 1
species in each genus.
C. 39. Jatiia . . 2
40. Corallina 3
D. 41. Zonaria ............... . 2
42. Dictyota 2
43. Diciyoptcris I
E. 44. Aspcrococcus I
45. Ulva ...12
46. Scytosiplion 9
47. Palmella 2
48. Meiietia 4
49. Olivia 6
F. 30. Cariodorus.,. 1
51. JN'ostoc 1
G. 52. Alcyoniditim 1
53. Ephidatia i
54. Spongilla 2
H. .55. Tuplia 13
56. Scypha 9
57. Spono;ia.., .14
38. Tethya 3
I. 39. Delesseria.. 3
60. Odonthalia 1
61. Sp'naerococcus 15
62. Gigartina 18
63. Gaslridium 16
K. 64. Fasciata 2
65. Laminaria 4
66. Phasgonon 2
67. Chorda , 2
68. Chordaria i
69. Sporochnus 2
70. Desmarestia 2
71. Lichina 2
72. Himanthalia ..... 1
73. Cervina I
74. Fucus ... 3
75. Halidrys 3
76. Mackaia... 6
77. Baccalaria .......... 2
78. Siliquaria I
79. Furcellaria I
3. Homothalamtce.
A. 80. PlacyiUhium ...,.,,... 1