Berkheya

Berkheya
Berkheya sp.
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Genus: Berkheya
Ehrh.
Species

about 75

Berkheya is a genus of flowering plants in the aster family, Asteraceae, and the subfamily Carduoideae, the thistles. It is distributed in tropical Africa, especially in southern regions.[1] Of about 75 species, 71 can be found in South Africa.[2]

Most species have yellow ray florets, a few have white, and B. purpurea has light purple or mauve florets.[1]

B. purpurea is cultivated as an ornamental plant.[1] Some Berkheya are known as weeds.[3]

Berkheya are associated with a variety of weevils in the genus Larinus. The tephritid fruit fly Urophora agromyzella is also found on the plants.[3]

Species

Species include:[4][5]

  1. Berkheya acanthopoda
  2. Berkheya angusta
  3. Berkheya angustifolia
  4. Berkheya annectens – thistle-thorn
  5. Berkheya armata
  6. Berkheya barbata
  7. Berkheya bergiana
  8. Berkheya bipinnatifida
  9. Berkheya caffra
  10. Berkheya canescens
  11. Berkheya cardopatifolia
  12. Berkheya carduoides
  13. Berkheya carlinifolia
  14. Berkheya carlinoides
  15. Berkheya carlinopsis
  16. Berkheya chamaepeuce
  17. Berkheya cirsiifolia
  18. Berkheya coddii
  19. Berkheya coriacea
  20. Berkheya cruciata
  21. Berkheya cuneata
  22. Berkheya debilis
  23. Berkheya decurrens
  24. Berkheya densifolia
  25. Berkheya discolor
  26. Berkheya draco
  27. Berkheya dregei
  28. Berkheya echinacea
  29. Berkheya eriobasis
  30. Berkheya erysithales
  31. Berkheya ferox
  32. Berkheya francisci
  33. Berkheya fruticosa
  34. Berkheya glabrata – yellow thistle
  35. Berkheya griquana
  36. Berkheya herbacea
  37. Berkheya heterophylla
  38. Berkheya insignis
  39. Berkheya latifolia
  40. Berkheya leucaugeta
  41. Berkheya mackenii
  42. Berkheya macrocephala
  43. Berkheya maritima
  44. Berkheya montana
  45. Berkheya multijuga
  46. Berkheya nivea
  47. Berkheya onobromoides
  48. Berkheya onopordifolia
  49. Berkheya pannosa
  50. Berkheya pauciflora
  51. Berkheya pinnatifida
  52. Berkheya purpurea – purple berkheya
  53. Berkheya radula
  54. Berkheya radyeri
  55. Berkheya rhapontica
  56. Berkheya rigida – Augusta thistle, Hamelin thistle
  57. Berkheya robusta
  58. Berkheya rosulata
  59. Berkheya seminivea
  60. Berkheya setifera
  61. Berkheya speciosa
  62. Berkheya sphaerocephala
  63. Berkheya spinosa
  64. Berkheya spinosissima
  65. Berkheya subulata
  66. Berkheya tysonii
  67. Berkheya umbellata
  68. Berkheya viscosa
  69. Berkheya zeyheri

Gallery

References

  1. 1 2 3 Hind, N. (2006). 568. Berkheya purpurea. Curtis's Botanical Magazine 23(4), 289-96.
  2. ↑ Funk, V. A. and R. Chan. (2008). Phylogeny of the spiny African daisies (Compositae, tribe Arctotideae, subtribe Gorteriinae) based on trnL-F, ndhF, and ITS sequence data. Molecular Phylogenetics and Evolution 48(1), 47-60.
  3. 1 2 Clark, M. M. A comparison between the flower-head insect communities of South African Berkheya and European Cynareae. In: Proceedings of the VIII International Symposium on Biological Control of Weeds. (pp. 165-170). Istituto Sperimentale per la Vegetale, Ministero dell'Agricoltura e delle Foreste. 1990.
  4. ↑ Berkheya. The Plant List.
  5. ↑ Species listing: Berkheya. Red List of South African Plants. South African National Biodiversity Institute (SANBI).
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