Ecological Flora of the British Isles

The Ecological Characteristics for

DROSERA ROTUNDIFOLIA

  1. Char Number: 1.01 Characteristic: Soil nutrients, Value: infertile, Quality : non-British data
    Reference : de Ridder F, personal communication , 1991
  2. Char Number: 1.01 Characteristic: Soil nutrients, Value: very infertile, Quality : non-British data
    Reference : de Ridder F, personal communication , 1991
  3. Char Number: 1.02 Characteristic: Soil moisture: 1. water table, Value: permanently high
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  4. Char Number: 1.03 Characteristic: Soil moisture: 2. drainage, Value: slow-draining
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  5. Char Number: 1.04 Characteristic: Soil moisture: 3. supply, Value: continuous
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  6. Char Number: 1.06 Characteristic: Soil pH: 1. extreme maximum, Value: 7.5
    Reference : Wheeler BD, Shaw SC, unpublished data, Sheffield University , 1992
  7. Char Number: 1.06A Characteristic: Water pH: 1. extreme maximum, Value: 7.28
    Reference : Wheeler BD, Shaw SC, unpublished data, Sheffield University , 1992
  8. Char Number: 1.07 Characteristic: Soil pH: 2. extreme minimum, Value: 3.32
    Reference : Wheeler BD, Shaw SC, unpublished data, Sheffield University , 1992
  9. Char Number: 1.07A Characteristic: Water pH: 2. extreme minimum, Value: 3.18
    Reference : Wheeler BD, Shaw SC, unpublished data, Sheffield University , 1992
  10. Char Number: 1.08 Characteristic: Soil pH: 3. typical maximum, Value: 6.15
    Reference : Wheeler BD, Shaw SC, unpublished data, Sheffield University , 1992
  11. Char Number: 1.08A Characteristic: Water pH: 3. typical maximum, Value: 5.99
    Reference : Wheeler BD, Shaw SC, unpublished data, Sheffield University , 1992
  12. Char Number: 1.09 Characteristic: Soil pH: 4. typical minimum, Value: 4.29
    Reference : Wheeler BD, Shaw SC, unpublished data, Sheffield University , 1992
  13. Char Number: 1.09A Characteristic: Water pH: 4. typical minimum, Value: 4.29
    Reference : Wheeler BD, Shaw SC, unpublished data, Sheffield University , 1992
  14. Char Number: 1.10 Characteristic: Shade, Value: none
    Reference : Juniper BE, Robins RJ, Joel DM, The Carnivorous Plants, Academic Press, London , 1989
  15. Char Number: 1.12 Characteristic: Altitude: 1. maximum recorded (m), Value: 900
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  16. Char Number: 1.13 Characteristic: Altitude: 2. minimum recorded (m), Value: 0
    Reference : Wilson A, The Altitudinal Range of British Plants, North Western Naturalist (supplement) , 1949
  17. Char Number: 1.14 Characteristic: Altitude: 4. typical minimum (m), Value: 0
    Reference : Wilson A, The Altitudinal Range of British Plants, North Western Naturalist (supplement) , 1949
  18. Char Number: 2.01 Characteristic: Status, Value: native
  19. Char Number: 2.02 Characteristic: Typical abundance where naturally occurring, Value: frequent
    Reference : Fitter AH, personal communication , 1991
  20. Char Number: 2.04 Characteristic: First historical record: 1. date, Value: 1568
    Reference : Clarke WA, First Records of British Flowering Plants, 2nd ed., West, Newman & Co., London , 1900
  21. Char Number: 2.11 Characteristic: Range: 3. continents where native, Value: North America
    Reference : Clapham AR, Tutin TG, Moore DM, Flora of the British Isles, 3rd ed, Cambridge University Press, Cambridge , 1987
  22. Char Number: 2.11 Characteristic: Range: 3. continents where native, Value: Asia
    Reference : Clapham AR, Tutin TG, Moore DM, Flora of the British Isles, 3rd ed, Cambridge University Press, Cambridge , 1987
  23. Char Number: 2.11 Characteristic: Range: 3. continents where native, Value: Europe
  24. Char Number: 2.13 Characteristic: SN Index, Value: 5.17
    Indices were derived from data obtained from the Biological Records Centre, Institute of Terrestrial Ecology, Monks Wood Experimental Station, Huntingdon, 1992
  25. Char Number: 2.14 Characteristic: EW Index, Value: 5.34
    Indices were derived from data obtained from the Biological Records Centre, Institute of Terrestrial Ecology, Monks Wood Experimental Station, Huntingdon, 1992
  26. Char Number: 2.17 Characteristic: number of European countries in which native, Value: 25
  27. Char Number: 3.01 Characteristic: Stems: 1. woodiness, Value: non-woody
    Reference : Clapham AR, Tutin TG, Moore DM, Flora of the British Isles, 3rd ed, Cambridge University Press, Cambridge , 1987
  28. Char Number: 3.02 Characteristic: Stems: 2. support, Value: self-supporting
    Reference : Clapham AR, Tutin TG, Moore DM, Flora of the British Isles, 3rd ed, Cambridge University Press, Cambridge , 1987
  29. Char Number: 3.05 Characteristic: Height: 3. typical maximum (cm), Value: 18
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  30. Char Number: 3.06 Characteristic: Height: 4. typical minimum (cm), Value: 4
    Reference : Clapham AR, Tutin TG, Moore DM, Flora of the British Isles, 3rd ed, Cambridge University Press, Cambridge , 1987
  31. Char Number: 3.07 Characteristic: Spread, Value: height = width
    Reference : Clapham AR, Tutin TG, Moore DM, From:- Flora of the British Isles, 3rd edition, Cambridge University Press, Cambridge; interpreted by AH Fitter , 1987
  32. Char Number: 3.08 Characteristic: Heterophylly, Value: none
    Reference : Clapham AR, Tutin TG, Moore DM, From:- Flora of the British Isles, 3rd edition, Cambridge University Press, Cambridge; interpreted by AH Fitter , 1987
  33. Char Number: 3.09 Characteristic: Leaf shape: 1. type, Value: simple
    Reference : Clapham AR, Tutin TG, Moore DM, From:- Flora of the British Isles, 3rd edition, Cambridge University Press, Cambridge; interpreted by AH Fitter , 1987
  34. Char Number: 3.10 Characteristic: Leaf shape: 2. outline, Value: entire
    Reference : Clapham AR, Tutin TG, Moore DM, From:- Flora of the British Isles, 3rd edition, Cambridge University Press, Cambridge; interpreted by AH Fitter , 1987
  35. Char Number: 3.11 Characteristic: Leaf shape: 3. pointed/round, Value: rounded
    Reference : Clapham AR, Tutin TG, Moore DM, From:- Flora of the British Isles, 3rd edition, Cambridge University Press, Cambridge; interpreted by AH Fitter , 1987
  36. Char Number: 3.12 Characteristic: Leaf shape: 4. length versus breadth, Value: length = width
    Reference : Clapham AR, Tutin TG, Moore DM, From:- Flora of the British Isles, 3rd edition, Cambridge University Press, Cambridge; interpreted by AH Fitter , 1987
  37. Char Number: 3.13 Characteristic: Leaf shape: 5. leaf base, Value: rounded
    Reference : Clapham AR, Tutin TG, Moore DM, From:- Flora of the British Isles, 3rd edition, Cambridge University Press, Cambridge; interpreted by AH Fitter , 1987
  38. Char Number: 3.14 Characteristic: Leaf shape: 6. petiole, Value: petiolate
    Reference : Clapham AR, Tutin TG, Moore DM, Flora of the British Isles, 3rd ed, Cambridge University Press, Cambridge , 1987
  39. Char Number: 3.15 Characteristic: Leaf shape: 7. minimum petiole length (mm), Value: 15
    Reference : Clapham AR, Tutin TG, Moore DM, Flora of the British Isles, 3rd ed, Cambridge University Press, Cambridge , 1987
  40. Char Number: 3.16 Characteristic: Leaf shape: 8. maximum petiole length (mm), Value: 30
    Reference : Clapham AR, Tutin TG, Moore DM, Flora of the British Isles, 3rd ed, Cambridge University Press, Cambridge , 1987
  41. Char Number: 3.17 Characteristic: Leaf area (cm2), Value: 0.1-1
    Reference : Clapham AR, Tutin TG, Moore DM, Flora of the British Isles, 3rd ed, Cambridge University Press, Cambridge , 1987
  42. Char Number: 3.19 Characteristic: Stomata: 1. surfaces present, Value: both
    Reference : Juniper BE, Robins RJ, Joel DM, The Carnivorous Plants, Academic Press, London , 1989
  43. Char Number: 3.20 Characteristic: Stomata: 2. density on lower surface(no/mm2), Value: 36.3, Quality : non-British data
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  44. Char Number: 3.21 Characteristic: Stomata: 3. density on upper surface (no/mm2), Value: 36.3, Quality : non-British data
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  45. Char Number: 3.22 Characteristic: Leaf longevity: 1. type, Value: aestival, Quality : non-British data
    Reference : de Ridder F, personal communication , 1991
  46. Char Number: 3.23 Characteristic: Leaf longevity: 2. number of months, Value: 0-2, Quality : non-British data
    Reference : de Ridder F, personal communication , 1991
  47. Char Number: 3.23 Characteristic: Leaf longevity: 2. number of months, Value: 2-6, Quality : non-British data
    Reference : de Ridder F, personal communication , 1991
  48. Char Number: 3.24 Characteristic: Root system, Value: adventitious
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  49. Char Number: 3.24 Characteristic: Root system, Value: tap root
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  50. Char Number: 3.25 Characteristic: Root depth: 1. type, Value: shallow
    Reference : Juniper BE, Robins RJ, Joel DM, The Carnivorous Plants, Academic Press, London , 1989
  51. Char Number: 3.26 Characteristic: Root depth: 2. depth (cm), Value: 0-10
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  52. Char Number: 3.28 Characteristic: Root hairs, Value: present
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  53. Char Number: 3.30 Characteristic: Root persistence, Value: >1
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  54. Char Number: 4.02 Characteristic: Photosynthetic pathway, Value: C3
  55. Char Number: 4.05 Characteristic: Heavy metal resistance, Value: none
  56. Char Number: 4.06 Characteristic: Carnivory, Value: leaves
    Reference : Juniper BE, Robins RJ, Joel DM, The Carnivorous Plants, Academic Press, London , 1989
  57. Char Number: 4.07 Characteristic: Nutrition, Value: autotrophic
  58. Char Number: 4.08 Characteristic: Response to drought, Value: wilts and dies
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  59. Char Number: 4.09 Characteristic: Response to frost (non-woody tissue), Value: resistant
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  60. Char Number: 5.01 Characteristic: Life-form, Value: helophyte
    Reference : Clapham AR, Tutin TG, Moore DM, Flora of the British Isles, 3rd ed, Cambridge University Press, Cambridge , 1987
  61. Char Number: 5.01 Characteristic: Life-form, Value: hemicryptophyte
    Reference : Clapham AR, Tutin TG, Moore DM, Flora of the British Isles, 3rd ed, Cambridge University Press, Cambridge , 1987
  62. Char Number: 5.02 Characteristic: Longevity of stems (yrs), Value: <1
    Reference : Clapham AR, Tutin TG, Moore DM, Flora of the British Isles, 3rd ed, Cambridge University Press, Cambridge , 1987
  63. Char Number: 5.03 Characteristic: Age at first flowering, Value: 1-2 yrs, Quality : non-British data
    Reference : de Ridder F, personal communication , 1991
  64. Char Number: 5.04 Characteristic: Mono/poly-carpic, Value: polycarpic
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  65. Char Number: 5.05 Characteristic: Vegetative reproduction/persistence: 1. method, Value: buds
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  66. Char Number: 5.07 Characteristic: Flowering time: 1. earliest month, Value: 5
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  67. Char Number: 5.08 Characteristic: Flowering time: 2. latest month, Value: 10
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  68. Char Number: 5.09 Characteristic: Flowering time: 3. peak month, Value: 6
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  69. Char Number: 5.09 Characteristic: Flowering time: 3. peak month, Value: 7
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  70. Char Number: 5.13 Characteristic: Pollen: 2. diameter (um), Value: 35, Quality : tetrads 68um across
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  71. Char Number: 5.15 Characteristic: Pollen vector, Value: insect, Quality : unlikely according to source 793
    Reference : Knuth P, Handbook of Flower Pollination, Volume 2 (trans Ainsworth Davis JR), Oxford , 1908
  72. Char Number: 5.16 Characteristic: Dicliny, Value: hermaphrodite
    Reference : Clapham AR, Tutin TG, Moore DM, Flora of the British Isles, 3rd ed, Cambridge University Press, Cambridge , 1987
  73. Char Number: 5.17 Characteristic: Dichogamy, Value: homogamous
    Reference : Knuth P, Handbook of Flower Pollination, Volume 2 (trans Ainsworth Davis JR), Oxford , 1908
  74. Char Number: 5.19 Characteristic: Fertilization, Value: viviparous, Quality : one viviparous plant observed in Britain
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  75. Char Number: 5.19 Characteristic: Fertilization, Value: normally self
    Reference : Knuth P, Handbook of Flower Pollination, Volume 2 (trans Ainsworth Davis JR), Oxford , 1908
  76. Char Number: 5.20 Characteristic: Cleistogamy, Value: pseudo-cleistogamous, Quality : if deficient light
    Reference : Knuth P, Handbook of Flower Pollination, Volume 1 (trans Ainsworth Davis JR), Oxford , 1906
  77. Char Number: 5.22 Characteristic: Incompatibility systems, Value: none
    Reference : Knuth P, Handbook of Flower Pollination, Volume 1 (trans Ainsworth Davis JR), Oxford , 1906
  78. Char Number: 5.25 Characteristic: Chromosome number(s): 1. number, Value: 20, Quality : non-British data
  79. Char Number: 5.26 Characteristic: 2C DNA content (pg), Value: 1.8, Quality : 2n=20
    Reference : Bennett MD, Smith JB, , Philosophical Transactions of the Royal Society, 1976, B274, 227-274
  80. Char Number: 5.28 Characteristic: Time of seed dispersal (season), Value: autumn, Quality : seeds may remain in capsules until spring
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  81. Char Number: 5.28 Characteristic: Time of seed dispersal (season), Value: summer
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  82. Char Number: 5.31 Characteristic: Seed size - length of longest axis (mm), Value: 1.5, Quality : seed
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  83. Char Number: 5.33 Characteristic: Seed weight: 2. minimum (mg), Value: 0.01
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  84. Char Number: 5.34 Characteristic: Seed weight: 3. mean (mg), Value: 0.014
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  85. Char Number: 5.35 Characteristic: Seed production: 1. maximum (/flower), Value: 113
    Reference : Salisbury EJ, The Reproductive Capacity of Plants, G Bell and Sons Ltd, London , 1942
  86. Char Number: 5.36 Characteristic: Seed production: 2. typical range (/flower), Value: 10-100, Quality : c. 74
    Reference : Salisbury EJ, The Reproductive Capacity of Plants, G Bell and Sons Ltd, London , 1942
  87. Char Number: 5.37 Characteristic: Seed production: 3. typical range (/plant), Value: 100-1000
    Reference : Salisbury E, , Proceedings of the Royal Society of London B, 1976, 192, 323-329
  88. Char Number: 5.38 Characteristic: Dispersal agent, Value: wind
    Reference : Salisbury E, , Proceedings of the Royal Society of London B, 1976, 192, 323-329
  89. Char Number: 5.39 Characteristic: Time of germination (season), Value: spring, Quality : some germination in summer
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  90. Char Number: 5.45 Characteristic: Germination requirements 1. chilling, Value: absolute
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  91. Char Number: 5.46 Characteristic: Germination requirements 2. light, Value: partial
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  92. Char Number: 5.47 Characteristic: Germination requirements 3. temperature fluctuation, Value: partial
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  93. Char Number: 5.48 Characteristic: Germination type, Value: epigeal
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  94. Char Number: 5.52 Characteristic: Normal method of propagation, Value: seed and vegetative
    Reference : Crowder AA et al, , Journal of Ecology, 1990, 78, 233-267
  95. Char Number: 5.53 Characteristic: Seedbank type, Value: short-term persistent
    Reference : Thompson K, Bakker J, Bekker R, calculated from data in: The soil seed banks of North West Europe: methodology, density and longevity, CUP.
  96. Char Number: 5.54 Characteristic: Maximum seedbank density (m2), Value: 52
    Reference : Thompson K, Bakker J, Bekker R, calculated from data in: The soil seed banks of North West Europe: methodology, density and longevity, CUP.
  97. Char Number: 5.55 Characteristic: Minimum seedbank density (m2), Value: 52
    Reference : Thompson K, Bakker J, Bekker R, calculated from data in: The soil seed banks of North West Europe: methodology, density and longevity, CUP.
  98. Char Number: 5.56 Characteristic: Mean seedbank density (m2), Value: 52
    Reference : Thompson K, Bakker J, Bekker R, calculated from data in: The soil seed banks of North West Europe: methodology, density and longevity, CUP.
  99. Char Number: 6.02 Characteristic: Physical defences on leaves, Value: glandular hairs
    Reference : Clapham AR, Tutin TG, Warburg EF, Flora of the British Isles, 1st edition, Cambridge University Press, Cambridge , 1952
  100. Char Number: 7.01 Characteristic: Conservation Status, Value: , Quality : , Subspecies :
    Reference : M O Hill, C D Preston & D B Roy, PLANTATT - Attributes of British and Irish Plants: Status, Size, Life History, Geography and Habitats ISBN 1870393740, CEH Publication Sales, 2004, 73pp
  101. Char Number: 7.02 Characteristic: Rarity Status, Value: Present, Quality : , Subspecies :
    Reference : M O Hill, C D Preston & D B Roy, PLANTATT - Attributes of British and Irish Plants: Status, Size, Life History, Geography and Habitats ISBN 1870393740, CEH Publication Sales, 2004, 73pp
  102. Char Number: 7.03 Characteristic: Change Index, Value: -0.56, Quality : , Subspecies :
    Reference : M O Hill, C D Preston & D B Roy, PLANTATT - Attributes of British and Irish Plants: Status, Size, Life History, Geography and Habitats ISBN 1870393740, CEH Publication Sales, 2004, 73pp
  103. Char Number: 7.04 Characteristic: Biome, Value: Boreo-Temperate, Quality : , Subspecies :
    Reference : M O Hill, C D Preston & D B Roy, PLANTATT - Attributes of British and Irish Plants: Status, Size, Life History, Geography and Habitats ISBN 1870393740, CEH Publication Sales, 2004, 73pp
  104. Char Number: 7.05 Characteristic: Eastern Limit, Value: Circumpolar, Quality : , Subspecies :
    Reference : M O Hill, C D Preston & D B Roy, PLANTATT - Attributes of British and Irish Plants: Status, Size, Life History, Geography and Habitats ISBN 1870393740, CEH Publication Sales, 2004, 73pp
  105. Char Number: 7.06 Characteristic: Continentality, Value: Not continental, Quality : , Subspecies :
    Reference : M O Hill, C D Preston & D B Roy, PLANTATT - Attributes of British and Irish Plants: Status, Size, Life History, Geography and Habitats ISBN 1870393740, CEH Publication Sales, 2004, 73pp
  106. Char Number: 7.07 Characteristic: Northern Limit in Britain, Value: No, Quality : , Subspecies :
    Reference : M O Hill, C D Preston & D B Roy, PLANTATT - Attributes of British and Irish Plants: Status, Size, Life History, Geography and Habitats ISBN 1870393740, CEH Publication Sales, 2004, 73pp
  107. Char Number: 7.08 Characteristic: Northern European Limit (Lat, 5?Ǭ? band), Value: >65, Quality : , Subspecies :
    Reference : M O Hill, C D Preston & D B Roy, PLANTATT - Attributes of British and Irish Plants: Status, Size, Life History, Geography and Habitats ISBN 1870393740, CEH Publication Sales, 2004, 73pp
  108. Char Number: 7.09 Characteristic: Southern European Limit (Latitude, 5?Ǭ? band), Value: <45, Quality : , Subspecies :
    Reference : M O Hill, C D Preston & D B Roy, PLANTATT - Attributes of British and Irish Plants: Status, Size, Life History, Geography and Habitats ISBN 1870393740, CEH Publication Sales, 2004, 73pp
  109. Char Number: 7.10 Characteristic: Southern European Limit, Value: No, Quality : , Subspecies :
    Reference : M O Hill, C D Preston & D B Roy, PLANTATT - Attributes of British and Irish Plants: Status, Size, Life History, Geography and Habitats ISBN 1870393740, CEH Publication Sales, 2004, 73pp
  110. Char Number: 7.11 Characteristic: January mean temperature, Value: 3.29999995231628, Quality : , Subspecies :
    Reference : M O Hill, C D Preston & D B Roy, PLANTATT - Attributes of British and Irish Plants: Status, Size, Life History, Geography and Habitats ISBN 1870393740, CEH Publication Sales, 2004, 73pp
  111. Char Number: 7.12 Characteristic: July mean temperature, Value: 13.8999996185303, Quality : , Subspecies :
    Reference : M O Hill, C D Preston & D B Roy, PLANTATT - Attributes of British and Irish Plants: Status, Size, Life History, Geography and Habitats ISBN 1870393740, CEH Publication Sales, 2004, 73pp
  112. Char Number: 7.13 Characteristic: Annual precipitation, Value: 1269, Quality : , Subspecies :
    Reference : M O Hill, C D Preston & D B Roy, PLANTATT - Attributes of British and Irish Plants: Status, Size, Life History, Geography and Habitats ISBN 1870393740, CEH Publication Sales, 2004, 73pp
  113. Char Number: 7.14 Characteristic: Ellenberg Indicator: Light, Value: 8, Quality : , Subspecies :
    Reference : M O Hill, C D Preston & D B Roy, PLANTATT - Attributes of British and Irish Plants: Status, Size, Life History, Geography and Habitats ISBN 1870393740, CEH Publication Sales, 2004, 73pp
  114. Char Number: 7.15 Characteristic: Ellenberg : Moisture, Value: 9, Quality : , Subspecies :
    Reference : M O Hill, C D Preston & D B Roy, PLANTATT - Attributes of British and Irish Plants: Status, Size, Life History, Geography and Habitats ISBN 1870393740, CEH Publication Sales, 2004, 73pp
  115. Char Number: 7.16 Characteristic: Ellenberg: pH, Value: 2, Quality : , Subspecies :
    Reference : M O Hill, C D Preston & D B Roy, PLANTATT - Attributes of British and Irish Plants: Status, Size, Life History, Geography and Habitats ISBN 1870393740, CEH Publication Sales, 2004, 73pp
  116. Char Number: 7.17 Characteristic: Ellenberg Indicator: Nitrogen, Value: 1, Quality : , Subspecies :
    Reference : M O Hill, C D Preston & D B Roy, PLANTATT - Attributes of British and Irish Plants: Status, Size, Life History, Geography and Habitats ISBN 1870393740, CEH Publication Sales, 2004, 73pp
  117. Char Number: 7.18 Characteristic: Ellenberg Indicator: Salt, Value: 0, Quality : , Subspecies :
    Reference : M O Hill, C D Preston & D B Roy, PLANTATT - Attributes of British and Irish Plants: Status, Size, Life History, Geography and Habitats ISBN 1870393740, CEH Publication Sales, 2004, 73pp
  118. Char Number: 7.19 Characteristic: Life Form: normal state, Value: Hemicryptophyte, Quality : , Subspecies :
    Reference : M O Hill, C D Preston & D B Roy, PLANTATT - Attributes of British and Irish Plants: Status, Size, Life History, Geography and Habitats ISBN 1870393740, CEH Publication Sales, 2004, 73pp
  119. Char Number: 7.20 Characteristic: Life Form: less frequent state, Value: , Quality : , Subspecies :
    Reference : M O Hill, C D Preston & D B Roy, PLANTATT - Attributes of British and Irish Plants: Status, Size, Life History, Geography and Habitats ISBN 1870393740, CEH Publication Sales, 2004, 73pp
  120. Char Number: 7.21 Characteristic: Clonality: normal state, Value: Little or no vegetative spread, Quality : , Subspecies :
    Reference : M O Hill, C D Preston & D B Roy, PLANTATT - Attributes of British and Irish Plants: Status, Size, Life History, Geography and Habitats ISBN 1870393740, CEH Publication Sales, 2004, 73pp
  121. Char Number: 7.22 Characteristic: Clonality: less frequent state, Value: , Quality : , Subspecies :
    Reference : M O Hill, C D Preston & D B Roy, PLANTATT - Attributes of British and Irish Plants: Status, Size, Life History, Geography and Habitats ISBN 1870393740, CEH Publication Sales, 2004, 73pp
Kew Germination Data:
  1. Plant Name: Drosera rotundifolia; Country of origin: Canada; , % germination 100; Pre Treatment: seed scarified (covering structure removed & seed coat chipped); Medium: 1% agar + 250 mg/l gibberellic acid (GA3); Conditions: 20°C, 8/16; Notes :
  2. Plant Name: Drosera rotundifolia; Country of origin: Italy; , % germination 10; Pre Treatment: imbibed on 1% agar for 1 week at 20°C, then seed scarified (covering structure removed); Medium: 1% agar + 250 mg/l gibberellic acid (GA3); Conditions: 20°C, 8/16; Notes :
  3. Plant Name: Drosera rotundifolia; Country of origin: Italy; , % germination 77; Pre Treatment: imbibed on 1% agar for 6 weeks at 5°C, then seed scarified (covering structure removed); Medium: 1% agar + 250 mg/l gibberellic acid (GA3); Conditions: 20°C, 8/16; Notes :
  4. Plant Name: Drosera rotundifolia; Country of origin: UK; , % germination 84; Pre Treatment: imbibed on 1% agar for 8 weeks at 20°C, then imbibed on 1% agar for 8 weeks at 5°C; Medium: 1% agar + 101 mg/l potassium nitrate (KNO3); Conditions: 20°C, 8/16; Notes :