Angustifolia
Arachnoidea
- Haworthia Revisited – 2. Haworthia arachnoidea
- A shadow of the past – Haworthia arachnoidea again. (1999)
- Volume 1, Chapter 5:- The Haworthias of Kaboega.
- Volume 2, Chapter 11:- Some of the interplay of H. arachnoidea and H. mucronata
- Volume 4, Chapter 2:- A glimpse of the super-species Haworthia nortieri
- Volume 6, Chapter 8:- A fleeting look at Haworthia arachnoidea
- Volume 6, Chapter 9:- Interesting nursery plants
- A myth corrected – part 5
Aristata
- Haworthia Revisited – 3. Haworthia aristata
- Volume 1, Chapter 1:- Haworthia gracilis, H. cymbiformis and H. cooperi in the greater Baviaanskloof area
- Volume 1, Chapter 4:- Haworthia cooperi and Haworthia bolusii var. blackbeardiana.
- Volume 1, Chapter 5:- The Haworthias of Kaboega.
- Volume 2, Chapter 7:- Continuity of Haworthia on the Zuurberg
- Volume 2, Chapter 10:- Small Hairy Things
- Volume 6, Chapter 3:- Still more about Haworthia on Kaboega
- Kaboega
Blackbeardiana
Bolusii
Chloracantha
- Haworthia Revisited – 7. Haworthia chloracantha
- Volume 2, Chapter 1:- The curious variability of Haworthia floribunda
- Volume 5, Chapter 17:- New populations of Haworthia chloracantha, Haworthia parksiana and Haworthia kingiana
- Variable chloracantha
- Mystery – part 40, Albertinia 5
- Mystery – part 41, Albertinia 6
- Mystery – part 42, Albertinia 7
Coarctata
Cooperi
- Haworthia Revisited – 8. Haworthia cooperi
- Volume 1, Chapter 1:- Haworthia gracilis, H. cymbiformis and H. cooperi in the greater Baviaanskloof area
- Volume 1, Chapter 2:- Haworthia mucronata and its new variety.
- Volume 1, Chapter 4:- Haworthia cooperi and Haworthia bolusii var. blackbeardiana.
- Volume 1, Chapter 5:- The Haworthias of Kaboega.
- Volume 2, Chapter 7:- Continuity of Haworthia on the Zuurberg
- Volume 2, Chapter 10:- Small Hairy Things
- Volume 4, Chapter 10:- Post-closure
- Volume 6, Chapter 3:- Still more about Haworthia on Kaboega
- Volume 6, Chapter 7:- Taking Haworthia cooperi further – Kliprivier.
- Kaboega
Cymbiformis
- Haworthia cymbiformis var. reddii (Scott) Bayer – a test of an hypothesis. (1997)
- Haworthia Revisited – 9. Haworthia cymbiformis
- Volume 1, Chapter 1:- Haworthia gracilis, H. cymbiformis and H. cooperi in the greater Baviaanskloof area
- Volume 1, Chapter 4:- Haworthia cooperi and Haworthia bolusii var. blackbeardiana.
- Volume 1, Chapter 5:- The Haworthias of Kaboega.
- Volume 2, Chapter 7:- Continuity of Haworthia on the Zuurberg
- Volume 4, Chapter 10:- Post-closure
- Volume 6, Chapter 3:- Still more about Haworthia on Kaboega
- Kaboega
Decipiens
- Haworthia Revisited – 10. Haworthia decipiens
- Volume 1, Chapter 1:- Haworthia gracilis, H. cymbiformis and H. cooperi in the greater Baviaanskloof area
- Volume 1, Chapter 2:- Haworthia mucronata and its new variety.
- Volume 1, Chapter 4:- Haworthia cooperi and Haworthia bolusii var. blackbeardiana.
- Volume 1, Chapter 5:- The Haworthias of Kaboega.
- Volume 2, Chapter 10:- Small Hairy Things
Drosanthemum
Emelyae
- Natural Variation and Species Delimitation in Haworthia Duval. – Part 4. HAWORTHIA EMELYAE von Poelln. and a new variety. (1979)
- A Story of Haworthia Nitidula v. Poell. ( = H. mirabilis Haw.) (1980)
- Haworthia Revisited – 11. Haworthia emelyae
- Volume 6, Chapter 4:- Haworthia emelyae and some of its variants
- Volume 6, Chapter 5:- Haworthia emelyae ‘major’ and multifolia. New populations.
- Leaf sequence in Haworthia emelyae ‘comptoniana’ over a long period
- What do you think this is?
Floribunda
- Haworthia Revisited – 12. Haworthia floribunda
- Volume 2, Chapter 1:- The curious variability of Haworthia floribunda
- Volume 2, Chapter 2:- A population of Haworthia magnifica/maraisii
- Volume 2, Chapter 12:- Haworthia rossouwii VPoelln. and the demise of H. serrata Bayer
- Volume 3, Chapter 13:- Haworthia IS confusing.
- Volume 5, Chapter 6:- Haworthia floribunda
- Volume 5, Chapter 9:- More on H. floribunda and H. mirabilis
- Volume 7, Chapter 1:- Haworthia retusa ‘nigra’ – Another grand finale.
- Volume 7, Chapter 6:- Field trip to Van Reenens Crest and Niekerkshek.
- Volume 7, Chapter 7:- More on Haworthia mirabilis and H. mutica from east of Bredasdorp.
- Still another view of Haworthia retusa and Haworthia mirabilis
- A sequel…Still another view of Haworthia retusa and Haworthia mirabilis.
- MBB7998 – Haworthia floribunda, Kruisrivier N
- Bontebok Park Haworthia floribunda and SW Klipport Haworthia mirabilis
- The Haworthia species of the Bontebok National Park
- Mystery – part 7, Floribunda spots
- Mystery – part 10, Floribunda SW Tradouw
- Mystery – part 12, How do we know anything?
- Mystery – part 15, Swellendam H. floribunda
- Mystery – part 40, Albertinia 5
- Mystery – part 42, Albertinia 7
Flowers
- Volume 3, Chapter 2:- Flowers of some Haworthia
- Volume 3, Chapter 13:- Haworthia IS confusing.
- Haworthia limifolia – a conundrum or a lesson?
- Haworthia flowers – some comments as a character source, part 1
- Haworthia flowers – some comments as a character source, part 2
- Haworthia flowers – some comments as a character source, part 3
- Very brief note re Haworthia nortieri flowers.
- A sequel…Still another view of Haworthia retusa and Haworthia mirabilis.
- Comprehension and significance
- Haworthia flowers – some comments as a character source, Appendix 5
- Haworthia minima and pumila flowers
- MBB7989 Haworthia pumila, Lemoenpoort
- Haworthia flowers – some comments as a character source, Appendix 6
- Haworthia flowers – some comments as a character source, Appendix 7
- Haworthia flowers – some comments as a character source, Appendix 8
- Haworthia flowers – some comments as a character source, Appendix 9
- Haworthia flowers – some comments as a character source, Appendix 10
- A further report on Haworthia mirabilis in the Greyton area.
Glauca
Gracilis
- Haworthia Revisited – 13. Haworthia gracilis
- Volume 1, Chapter 1:- Haworthia gracilis, H. cymbiformis and H. cooperi in the greater Baviaanskloof area
- Volume 1, Chapter 4:- Haworthia cooperi and Haworthia bolusii var. blackbeardiana.
- Volume 1, Chapter 5:- The Haworthias of Kaboega.
- Volume 2, Chapter 8:- Ecotypes in Haworthia
Groenewaldii
Heidelbergensis
- Haworthia Revisited – 14. Haworthia heidelbergensis
- Volume 2, Chapter 12:- Haworthia rossouwii VPoelln. and the demise of H. serrata Bayer
- Volume 2, Chapter 13:- A trip to Bredasdorp
- Volume 3, Chapter 14:- A population of Haworthia heidelbergensis.
- Volume 6, Chapter 11:- North and Northwest of the Potberg
Herbacea
Kingiana
Koelmaniorum
Limifolia
Lockwoodii
Maculata
- Natural Variation and Species Delimitation in Haworthia Duval. – Part 6. HAWORTHIA MACULATA (V. Poelln.) Bayer. (1987)
- Haworthia Revisited – 17. Haworthia maculata
- Volume 6, Chapter 6:- Die Nekkies and Biomes and Haworthia maculata.
- A myth corrected to – Haworthia maculata var. livida (Bayer) Bayer – and flowers ignored.
- A myth corrected – part 2
- A myth corrected – part 3
- A myth corrected – part 4
- A myth corrected – part 5
- Haworthia maculata ↔ Haworthia pubescens, MBB8002 Cilmor.
- Addendum Haworthia pubescens MBB8011, SW Sandberg
- Die Nekkies Haworthia – A further visit and updated information
- Haworthia maculata leaf tips, faces and backs
- Haworthia Update Vol. 9 – Addendum
Magnifica
- Haworthia Revisited – 18. Haworthia magnifica
- Volume 2, Chapter 2:- A population of Haworthia magnifica/maraisii
- Volume 3, Chapter 13:- Haworthia IS confusing.
- Volume 4, Chapter 1:- That squadron of Haworthias from Albertinia eastwards.
- Volume 5, Chapter 3:- Haworthia Deglamorized. A Recapitulation.
- Volume 5, Chapter 10:- Haworthia ‘enigma’ and H. mutica var nigra.
Maraisii
- Haworthia Revisited – 19. Haworthia maraisii
- Volume 2, Chapter 1:- The curious variability of Haworthia floribunda
- Volume 2, Chapter 2:- A population of Haworthia magnifica/maraisii
- Volume 2, Chapter 14:- Explaining the name Haworthia intermedia VPoelln. and others
- Volume 3, Chapter 1:- Haworthia mirabilis, and the interface with Haworthia maraisii
- Volume 3, Chapter 13:- Haworthia IS confusing.
- Volume 3, Chapter 14:- A population of Haworthia heidelbergensis.
- Volume 4, Chapter 7:- The brutality of the reality of Haworthia.
- Volume 5, Chapter 3:- Haworthia Deglamorized. A Recapitulation.
- Volume 6, Chapter 11:- North and Northwest of the Potberg
Marginata
Marumiana
Minima
- Haworthia Revisited – 60. Haworthia minima
- Volume 5, Chapter 7:- Haworthia minima
- Volume 5, Chapter 13:- A February 2009 Miscellany
- Volume 7, Chapter 1:- Haworthia retusa ‘nigra’ – Another grand finale.
- Volume 7, Chapter 3:- A field trip to the Potberg area.
- New finds in Haworthia.
- Haworthia minima and pumila flowers
- The Haworthia species of the Bontebok National Park
Mirabilis
- Haworthia mirabilis Haworth. (1977)
- A Story of Haworthia Nitidula v. Poell. ( = H. mirabilis Haw.) (1980)
- Haworthia Revisited – 21. Haworthia mirabilis
- Volume 2, Chapter 12:- Haworthia rossouwii VPoelln. and the demise of H. serrata Bayer
- Volume 2, Chapter 13:- A trip to Bredasdorp
- Volume 3, Chapter 1:- Haworthia mirabilis, and the interface with Haworthia maraisii
- Volume 3, Chapter 13:- Haworthia IS confusing.
- Volume 4, Chapter 4:- Some variation in Haworthia mirabilis var. sublineata
- Volume 4, Chapter 7:- The brutality of the reality of Haworthia.
- Volume 5, Chapter 2:- Haworthia Reality Check
- Volume 5, Chapter 3:- Haworthia Deglamorized. A Recapitulation.
- H. mirabilis magnifica, MBB6651, S Riversdale
- Volume 5, Chapter 5:- Haworthia mirabilis
- Volume 5, Chapter 9:- More on H. floribunda and H. mirabilis
- Volume 5, Chapter 10:- Haworthia ‘enigma’ and H. mutica var nigra.
- Volume 5, Chapter 13:- A February 2009 Miscellany
- Volume 5, Chapter 14:- Haworthia jakubii – another new species?
- Volume 5, Chapter 16:- Can Haworthia teach us anything?
- Volume 6, Chapter 9:- Interesting nursery plants
- Volume 6, Chapter 10:- Non-pilose "pilosa"
- Volume 7, Chapter 1:- Haworthia retusa ‘nigra’ – Another grand finale.
- Volume 7, Chapter 2:- Further exploration in Haworthia. Further to finale.
- Volume 7, Chapter 3:- A field trip to the Potberg area.
- Volume 7, Chapter 5:- Still more Haworthia mutica and Haworthia mirabilis
- Volume 7, Chapter 7:- More on Haworthia mirabilis and H. mutica from east of Bredasdorp.
- A myth corrected – part 5
- Still another view of Haworthia retusa and Haworthia mirabilis
- A sequel…Still another view of Haworthia retusa and Haworthia mirabilis.
- Bontebok Park Haworthia floribunda and SW Klipport Haworthia mirabilis
- Haworthia flowers – some comments as a character source, Appendix 6
- Haworthia flowers – some comments as a character source, Appendix 7
- Haworthia flowers – some comments as a character source, Appendix 8
- Haworthia flowers – some comments as a character source, Appendix 9
- Haworthia flowers – some comments as a character source, Appendix 10
- The Haworthia species of the Bontebok National Park
- A further report on Haworthia mirabilis in the Greyton area.
- Mystery – part 17, H. mirabilis and groenewaldii
- Mystery – part 30, mirabiloids
- Mystery – part 32, Stormsvlei mirabilis
Mucronata
Mutica
- Haworthia Revisited – 24. Haworthia mutica
- Volume 2, Chapter 5:- The White Widow Reunion – Haworthia mutica
- Volume 2, Chapter 6:- How to understand Haworthia mutica var. nigra
- Volume 2, Chapter 13:- A trip to Bredasdorp
- Volume 5, Chapter 10:- Haworthia ‘enigma’ and H. mutica var nigra.
- Volume 7, Chapter 3:- A field trip to the Potberg area.
- Volume 7, Chapter 4:- What is typical Haworthia mutica?
- Volume 7, Chapter 5:- Still more Haworthia mutica and Haworthia mirabilis
- Volume 7, Chapter 6:- Field trip to Van Reenens Crest and Niekerkshek.
- Volume 7, Chapter 7:- More on Haworthia mirabilis and H. mutica from east of Bredasdorp.
- Haworthia mutica (groenewaldii) and its twisted leaves.
- Haworthia flowers – some comments as a character source, Appendix 5
Mystery
- Mystery – Table of Contents
- Mystery – Introduction
- Mystery – part 1, Heidleberg and Albertinia
- Mystery – part 2, Hypothesis
- Mystery – part 3, Slang River and Haarwegskloof
- Mystery – part 4, Where to from here?
- Mystery – part 5, A digression to Kransriviermond
- Mystery – part 6, Contiguous
- Mystery – part 7, Floribunda spots
- Mystery – part 8, SE Tradouw
- Mystery – part 9, S Tradouw
- Mystery – part 10, Floribunda SW Tradouw
- Mystery – part 11, SW Tradouw
- Mystery – part 12, How do we know anything?
- Mystery – part 13, Swellendam
- Mystery – part 14, Flowers
- Mystery – part 15, Swellendam H. floribunda
- Mystery – part 16, How groenewaldii got it’s dots
- Mystery – part 17, H. mirabilis and groenewaldii
- Mystery – part 18, Recap
- Mystery – part 19, Surprises
- Mystery – part 20, Sandrift
- Mystery – part 21, Napky
- Mystery – part 22, Haarwegskloof again
- Mystery – part 23, Groenewaldii conservation
- Mystery – part 24, Non-Linnaean Taxonomy
- Mystery – part 25, Die Kop
- Mystery – part 25, Western boundary
- Mystery – part 26, Volmoed and an aside …
- Mystery – part 27, West of Riversdale
- Mystery – part 28, H. rossouwii
- Mystery – part 29, elizeae up on the Bromberg
- Mystery – part 30, mirabiloids
- Mystery – part 31, Conclusion
- Mystery – part 32, Stormsvlei mirabilis
- Mystery – part 33, Haworthiopsis
- Mystery – part 34, Watsonia too
- Mystery – part 35, H. bayeri
- Mystery – part 36, Albertinia
- Mystery – part 37, Albertinia 2
- Mystery – part 38, Albertinia 3
- Mystery – part 39, Albertinia 4
- Mystery – part 40, Albertinia 5
- Mystery – part 41, Albertinia 6
- Mystery – part 42, Albertinia 7
Nortieri
- Haworthia Revisited – 25. Haworthia nortieri
- Volume 4, Chapter 2:- A glimpse of the super-species Haworthia nortieri
- Volume 6, Chapter 8:- A fleeting look at Haworthia arachnoidea
- Volume 6, Chapter 9:- Interesting nursery plants
- Very brief note re Haworthia nortieri flowers.
- MBB6694 Kanetvlei, Hex River Valley as a variant of Haworthia nortieri.
Outeniquensis
Parksiana
Photos
Pre Update
- Table of Contents
- A new variety of Haworthia Limifolia from Natal (1962)
- Haworthia as a problem genus (1970)
- Variation in Haworthia with particular reference to HAWORTHIA GLAUCA, Baker. (1970)
- Changes in the genus Haworthia Duval. (1971)
- Anguish Among the Haworthias. (1972)
- Natural Variation and Species Delimitation in Haworthia Duval. – Part 1. HAWORTHIA RETICULATA (Haw.) Haworth (1972)
- Natural Variation and Species Delimitation in Haworthia Duval. – Part 2. HAWORTHIA HERBACEA (Miller) Stearn. (1972)
- Reinstatement of the Genera Astroloba and Poellnitzia Uitew.
- Natural Variation and Species Delimitation in Haworthia Duval. – Part 3. HAWORTHIA REINWARDTII Haw. and HAWORTHIA COARCTATA Haw. (1973)
- Leaf spirals in Haworthia. (1973)
- Haworthias – small relatives of Aloe (1974)
- Haworthia Duv.: Section Retusae fide Scott — Additional Comment (1974)
- The ‘Retuse’ Haworthias (1975)
- Haworthia mirabilis Haworth. (1977)
- Natural Variation and Species Delimitation in Haworthia Duval. – Part 4. HAWORTHIA EMELYAE von Poelln. and a new variety. (1979)
- A Story of Haworthia Nitidula v. Poell. ( = H. mirabilis Haw.) (1980)
- Looking for Haworthias (1980)
- Natural Variation and Species Delimitation in Haworthia Duval. – Part 5. HAWORTHIA ANGUSTIFOLIA Haworth. (1981)
- Observations on the G. G. Smith Collection of Haworthia. (1982)
- Haworthia – Confusion Reigns Again (1986)
- Haworthia and Nomenclatural Confusion (1987)
- Natural Variation and Species Delimitation in Haworthia Duval. – Part 6. HAWORTHIA MACULATA (V. Poelln.) Bayer. (1987)
- Haworthia History – Zurich (1997)
- Fundamentals as I see them (1997)
- Gravitational collapse and black holes in Haworthia (1997)
- Haworthia cymbiformis var. reddii (Scott) Bayer – a test of an hypothesis. (1997)
- Haworthia, why controversy?
- Beware of the dog (1999)
- A shadow of the past – Haworthia arachnoidea again. (1999)
- The intractable problem of look-alikes in Haworthia. (2001)
Pubescens
Pumila
Pungens
Pygmaea
Reinwardtii
Reticulata
Retusa
- Haworthia Duv.: Section Retusae fide Scott — Additional Comment (1974)
- The ‘Retuse’ Haworthias (1975)
- Haworthia Revisited – 32. Haworthia retusa
- Volume 5, Chapter 4:- Haworthia retusa – part 1
- Volume 5, Chapter 4:- Haworthia retusa – part 2
- Volume 5, Chapter 10:- Haworthia ‘enigma’ and H. mutica var nigra.
- Volume 5, Chapter 13:- A February 2009 Miscellany
- Volume 5, Chapter 16:- Can Haworthia teach us anything?
- Volume 6, Chapter 2:- Towerlands. Haworthia retusa ‘turgida’
- Volume 7, Chapter 1:- Haworthia retusa ‘nigra’ – Another grand finale.
- Volume 7, Chapter 6:- Field trip to Van Reenens Crest and Niekerkshek.
- My view of names
- New finds in Haworthia.
- Still another view of Haworthia retusa and Haworthia mirabilis
- A sequel…Still another view of Haworthia retusa and Haworthia mirabilis.
- MBB7999 H. retusa, Kruisrivier N
- MBB8000 – Haworthia retusa, Wegwysersrivier
- JDV92-65 H. retusa, Kruisrivier
- Mystery – part 36, Albertinia
- Mystery – part 37, Albertinia 2
- Mystery – part 38, Albertinia 3
- Mystery – part 39, Albertinia 4
Revisited
- Haworthia Revisited – Table of Contents
- Haworthia Revisited – Introduction
- Haworthia Revisited – 1. Haworthia angustifolia
- Haworthia Revisited – 2. Haworthia arachnoidea
- Haworthia Revisited – 3. Haworthia aristata
- Haworthia Revisited – 4. Haworthia bayeri
- Haworthia Revisited – 5. Haworthia blackburniae
- Haworthia Revisited – 6. Haworthia bolusii
- Haworthia Revisited – 7. Haworthia chloracantha
- Haworthia Revisited – 8. Haworthia cooperi
- Haworthia Revisited – 9. Haworthia cymbiformis
- Haworthia Revisited – 10. Haworthia decipiens
- Haworthia Revisited – 11. Haworthia emelyae
- Haworthia Revisited – 12. Haworthia floribunda
- Haworthia Revisited – 13. Haworthia gracilis
- Haworthia Revisited – 14. Haworthia heidelbergensis
- Haworthia Revisited – 15. Haworthia herbacea
- Haworthia Revisited – 16. Haworthia lockwoodii
- Haworthia Revisited – 17. Haworthia maculata
- Haworthia Revisited – 18. Haworthia magnifica
- Haworthia Revisited – 19. Haworthia maraisii
- Haworthia Revisited – 20. Haworthia marumiana
- Haworthia Revisited – 21. Haworthia mirabilis
- Haworthia Revisited – 22. Haworthia monticola
- Haworthia Revisited – 23. Haworthia mucronata
- Haworthia Revisited – 24. Haworthia mutica
- Haworthia Revisited – 25. Haworthia nortieri
- Haworthia Revisited – 26. Haworthia outeniquensis
- Haworthia Revisited – 27. Haworthia parksiana
- Haworthia Revisited – 28. Haworthia pubescens
- Haworthia Revisited – 29. Haworthia pulchella
- Haworthia Revisited – 30. Haworthia pygmaea
- Haworthia Revisited – 31. Haworthia reticulata
- Haworthia Revisited – 32. Haworthia retusa
- Haworthia Revisited – 33. Haworthia semiviva
- Haworthia Revisited – 34. Haworthia serrata
- Haworthia Revisited – 35. Haworthia springbokvlakensis
- Haworthia Revisited – 36. Haworthia truncata
- Haworthia Revisited – 37. Haworthia turgida
- Haworthia Revisited – 38. Haworthia variegata
- Haworthia Revisited – 39. Haworthia vlokii
- Haworthia Revisited – 40. Haworthia wittebergensis
- Haworthia Revisited – 41. Haworthia zantneriana
- Haworthia Revisited – 42. Haworthia attenuata
- Haworthia Revisited – 43. Haworthia bruynsii
- Haworthia Revisited – 44. Haworthia coarctata
- Haworthia Revisited – 45. Haworthia fasciata
- Haworthia Revisited – 46. Haworthia glabrata
- Haworthia Revisited – 47. Haworthia glauca
- Haworthia Revisited – 48. Haworthia koelmaniorum
- Haworthia Revisited – 49. Haworthia limifolia
- Haworthia Revisited – 50. Haworthia longiana
- Haworthia Revisited – 51. Haworthia nigra
- Haworthia Revisited – 52. Haworthia pungens
- Haworthia Revisited – 53. Haworthia reinwardtii
- Haworthia Revisited – 54. Haworthia scabra
- Haworthia Revisited – 55. Haworthia sordida
- Haworthia Revisited – 56. Haworthia venosa
- Haworthia Revisited – 57. Haworthia viscosa
- Haworthia Revisited – 58. Haworthia kingiana
- Haworthia Revisited – 59. Haworthia marginata
- Haworthia Revisited – 60. Haworthia minima
- Haworthia Revisited – 61. Haworthia pumila
- Haworthia Revisited – Excluded Names
- Haworthia Revisited – Landscape and habitat
- Haworthia Revisited – Literature
Rossouwii
- Volume 2, Chapter 12:- Haworthia rossouwii VPoelln. and the demise of H. serrata Bayer
- Volume 5, Chapter 8:- An extension of H. rossouwii
- Volume 5, Chapter 13:- A February 2009 Miscellany
- Haworthia flowers – some comments as a character source, Appendix 10
- Mystery – part 27, West of Riversdale
- Mystery – part 28, H. rossouwii
Splendens
Springbokvlakensis
Thoughts
- Thoughts on Haworthia – Foreward and Introduction
- Enigma N-1. The Haworthioid rocks of the Aspho Delay Sea
- Enigma 1. Another open letter
- Enigma 2. The real enigma in Haworthia.
- Enigma 3. The Haworthioid rocks of the Aspho Delay Sea
- Enigma 4. The Haworthioid rocks of the Aspho Della Sea
- Enigma 5. Cabbages and kings
- Enigma 6. A change of title – predictiveness in science.
- Enigma 7. ICBN vs Larry C. Leach and Col. C.L. Scott.
- Enigma 8. Does the ruling body of the ICBN know what it has done?
- Enigma 9. Does the ruling body of the ICBN know what it has done?
- Enigma 10. Does the ruling body of the ICBN know what it has done?
- Enigma 11. Titles of talks mutate – N+1
- Enigma 12. N+(N+1) as the title of a presentation
- Addendum 1. Haworthia – Where do we go from here?
- Addendum 2. Notes of talk. Conference of the Mid-West Cactus and Succulent Society. Omaha June 1998.
- Addendum 3. Haworthia – an approximation of a series of seven presentations given during the course of a short visit to USA June 1998, beginning at Omaha, Nebraska.
- Addendum 4. Salter’s revision of South African Oxalis (Oxalidaceae) and some new combinations from Herbertia 48 (1&2) – 1992
- Addendum 5. A harsh letter to Ingo Breuer
- Addendum 6. A review of the book ‘The world of Haworthias’ Vol.1 by Ingo Breuer, Niederzier, Germany,1998.
- Addendum 7. Is classification science or art?
- Addendum 8. A letter of disquiet to the Haworthia Society.
- Addendum 9. Observations on cytology as a character source in Gasteria.
Turgida
- Haworthia Duv.: Section Retusae fide Scott — Additional Comment (1974)
- Haworthia Revisited – 37. Haworthia turgida
- Volume 4, Chapter 1:- That squadron of Haworthias from Albertinia eastwards.
- Volume 5, Chapter 13:- A February 2009 Miscellany
- Volume 5, Chapter 16:- Can Haworthia teach us anything?
- Volume 6, Chapter 2:- Towerlands. Haworthia retusa ‘turgida’
- Volume 7, Chapter 2:- Further exploration in Haworthia. Further to finale.
- Mystery – part 36, Albertinia
Update +
- Table of Contents
- Van Reenens Crest
- Aloe pumila, Haworthia pumila; what or who is confused?
- Haworthia limifolia – a conundrum or a lesson?
- Haworthia marxii and H. truteriorum in relation to rational classification.
- Very brief note re Haworthia nortieri flowers.
- The reality of Drosanthemum micans L.
- New finds in Haworthia.
- What do collectors need?
- Righting some misconceptions.
- Comments on H. marxii
- Haworthia maculata ↔ Haworthia pubescens, MBB8002 Cilmor.
- Addendum Haworthia pubescens MBB8011, SW Sandberg
- Genetic history – the place in Haworthia classification.
- Haworthia mutica (groenewaldii) and its twisted leaves.
- Comprehension and significance
- Habitats
- MBB6694 Kanetvlei, Hex River Valley as a variant of Haworthia nortieri.
- Haworthia minima and pumila flowers
- MBB7989 Haworthia pumila, Lemoenpoort
- Leaf arrangement in Aloe striatula
- Just what do we do with names for Haworthia?
- The absurdity of taxonomy and nomenclature?
- Variable chloracantha
- Leaf sequence in Haworthia emelyae ‘comptoniana’ over a long period
- What do you think this is?
- Kaboega
- Habitat Views
- Haworthia Species Mystery Supplement
- Dunning-Kruger Effect
- Flowering Time
Update 1
- Haworthia Updates Vol. 1 – Table of Contents
- Haworthia Update, Volume 1 – Foreward
- Haworthia Update, Volume 1 – Introduction
- Volume 1, Chapter 1:- Haworthia gracilis, H. cymbiformis and H. cooperi in the greater Baviaanskloof area
- Volume 1, Chapter 2:- Haworthia mucronata and its new variety.
- Volume 1, Chapter 3:- The case of Haworthia incurvula V.Poelln. – an up-date.
- Volume 1, Chapter 4:- Haworthia cooperi and Haworthia bolusii var. blackbeardiana.
- Volume 1, Chapter 5:- The Haworthias of Kaboega.
- Volume 1, Chapter 6:- Summation – and a new solution?
Update 10
Update 11
- Haworthia Updates Vol. 11 – Table of Contents
- Still another view of Haworthia retusa and Haworthia mirabilis
- A sequel…Still another view of Haworthia retusa and Haworthia mirabilis.
- Die Nekkies Haworthia – A further visit and updated information
- Haworthia maculata leaf tips, faces and backs
- A further report on Haworthia mirabilis in the Greyton area.
Update 2
- Haworthia Updates Vol. 2 – Table of Contents
- Volume 2, Introduction and Acknowledgement
- Volume 2, Chapter 1:- The curious variability of Haworthia floribunda
- Volume 2, Chapter 2:- A population of Haworthia magnifica/maraisii
- Volume 2, Chapter 3:- Where to Haworthia limifolia
- Volume 2, Chapter 4:- Haworthia limifolia var. arcana Smith & Crouch
- Volume 2, Chapter 5:- The White Widow Reunion – Haworthia mutica
- Volume 2, Chapter 6:- How to understand Haworthia mutica var. nigra
- Volume 2, Chapter 7:- Continuity of Haworthia on the Zuurberg
- Volume 2, Chapter 8:- Ecotypes in Haworthia
- Volume 2, Chapter 9:- New Names and Combinations in Haworthia
- Volume 2, Chapter 10:- Small Hairy Things
- Volume 2, Chapter 11:- Some of the interplay of H. arachnoidea and H. mucronata
- Volume 2, Chapter 12:- Haworthia rossouwii VPoelln. and the demise of H. serrata Bayer
- Volume 2, Chapter 13:- A trip to Bredasdorp
- Volume 2, Chapter 14:- Explaining the name Haworthia intermedia VPoelln. and others
- Volume 2, Chapter 15:- Electron Scanning Photographs of Haworthia leaf surfaces
- Volume 2, Chapter 16:- Nectar Sugars in the Alooid minor genera and a need for another model
- Volume 2, Chapter 17:- Species and varieties listed
- Volume 2, Chapter 18:- Bayer Accessions
Update 3
- Haworthia Updates Vol. 3 – Table of Contents
- Volume 3, Chapter 1:- Haworthia mirabilis, and the interface with Haworthia maraisii
- Volume 3, Chapter 2:- Flowers of some Haworthia
- Volume 3, Chapter 3:- Alooideae – Asphodelaceae and the genera thereof
- Volume 3, Chapter 4:- Classification with purpose
- Volume 3, Chapter 5:- Some thing about new Haworthia
- Volume 3, Chapter 6:- Review of the annotated checklist for Haworthia – Strelitzia 14.
- Volume 3, Chapter 7:- Some thoughts on recent literature of the Alooideae (Asphodelaceae).
- Volume 3, Chapter 8:- Review of World Of Haworthias, Vol.2 – Ingo Breuer, published by Ingo Breuer, Niederzier.
- Volume 3, Chapter 9:- A response to Paul Forster’s review of Haworthia Revisited
- Volume 3, Chapter 10:- Rock of Ages – Another review.
- Volume 3, Chapter 11:- Haworthia as a problem genus – 34 years on.
- Volume 3, Chapter 12:- Plant classification – a sociology of ignorance?
- Volume 3, Chapter 13:- Haworthia IS confusing.
- Volume 3, Chapter 14:- A population of Haworthia heidelbergensis.
- Volume 3, Chapter 15:- The superspecies proposal.
Update 4
- Haworthia Updates Vol. 4 – Table of Contents
- Volume 4, Introduction
- Volume 4, Chapter 1:- That squadron of Haworthias from Albertinia eastwards.
- Volume 4, Chapter 2:- A glimpse of the super-species Haworthia nortieri
- Volume 4, Chapter 3:- More new things and ideas in Haworthia
- Volume 4, Chapter 4:- Some variation in Haworthia mirabilis var. sublineata
- Volume 4, Chapter 5:- What did I learn yesterday?
- Volume 4, Chapter 6:- Comments on Haworthia mortonii I.Breuer
- Volume 4, Chapter 7:- The brutality of the reality of Haworthia.
- Volume 4, Chapter 8:- Closer to closure.
- Volume 4, Chapter 9:- Closure
- Volume 4, Chapter 10:- Post-closure
- Volume 4, Chapter 11:- Haworthias – Small Relatives of Aloe
- Volume 4, Chapter 12:- Variation in Haworthia with Particular Reference to Haworthia Glauca, Baker.
- Volume 4, Chapter 13:- Haworthia and Nomenclatural Confusion
Update 5
- Haworthia Updates Vol. 5 – Table of Contents
- Volume 5, Chapter 1:- Winding down on Haworthia
- Volume 5, Chapter 2:- Haworthia Reality Check
- Volume 5, Chapter 3:- Haworthia Deglamorized. A Recapitulation.
- Volume 5, Chapter 4:- Haworthia retusa – part 1
- Volume 5, Chapter 4:- Haworthia retusa – part 2
- Volume 5, Chapter 5:- Haworthia mirabilis
- Volume 5, Chapter 6:- Haworthia floribunda
- Volume 5, Chapter 7:- Haworthia minima
- Volume 5, Chapter 8:- An extension of H. rossouwii
- Volume 5, Chapter 9:- More on H. floribunda and H. mirabilis
- Volume 5, Chapter 10:- Haworthia ‘enigma’ and H. mutica var nigra.
- Volume 5, Chapter 11:- What is Haworthia schoemanii?
- Volume 5, Chapter 12:- More on Haworthia venosa ‘granulata’.
- Volume 5, Chapter 13:- A February 2009 Miscellany
- Volume 5, Chapter 14:- Haworthia jakubii – another new species?
- Volume 5, Chapter 15:- A view of Haworthia marumiana ‘dimorpha’
- Volume 5, Chapter 16:- Can Haworthia teach us anything?
- Volume 5, Chapter 17:- New populations of Haworthia chloracantha, Haworthia parksiana and Haworthia kingiana
- Volume 5, Acknowledgements
Update 6
- Haworthia Updates Vol. 6 – Table of Contents
- Volume 6, Introduction
- Volume 6, Chapter 1:- Haworthia and Chameleons
- Volume 6, Chapter 2:- Towerlands. Haworthia retusa ‘turgida’
- Volume 6, Chapter 3:- Still more about Haworthia on Kaboega
- Volume 6, Chapter 4:- Haworthia emelyae and some of its variants
- Volume 6, Chapter 5:- Haworthia emelyae ‘major’ and multifolia. New populations.
- Volume 6, Chapter 6:- Die Nekkies and Biomes and Haworthia maculata.
- Volume 6, Chapter 7:- Taking Haworthia cooperi further – Kliprivier.
- Volume 6, Chapter 8:- A fleeting look at Haworthia arachnoidea
- Volume 6, Chapter 9:- Interesting nursery plants
- Volume 6, Chapter 10:- Non-pilose "pilosa"
- Volume 6, Chapter 11:- North and Northwest of the Potberg
- Volume 6, Chapter 12:- A look at Aloe haworthioides
Update 7
- Haworthia Updates Vol. 7 – Table of Contents
- Haworthia Update Volume 7 – Essays on Haworthia by Bruce Bayer
- Volume 7, Chapter 1:- Haworthia retusa ‘nigra’ – Another grand finale.
- Volume 7, Chapter 2:- Further exploration in Haworthia. Further to finale.
- Volume 7, Chapter 3:- A field trip to the Potberg area.
- Volume 7, Chapter 4:- What is typical Haworthia mutica?
- Volume 7, Chapter 5:- Still more Haworthia mutica and Haworthia mirabilis
- Volume 7, Chapter 6:- Field trip to Van Reenens Crest and Niekerkshek.
- Volume 7, Chapter 7:- More on Haworthia mirabilis and H. mutica from east of Bredasdorp.
Update 8
- Haworthia Updates Vol. 8 – Table of Contents
- Haworthia flowers – some comments as a character source, part 1
- Haworthia flowers – some comments as a character source, part 2
- Haworthia flowers – some comments as a character source, part 3
- Haworthia flowers – some comments as a character source, Appendix 5
- Haworthia flowers – some comments as a character source, Appendix 6
- Haworthia flowers – some comments as a character source, Appendix 7
- Haworthia flowers – some comments as a character source, Appendix 8
- Haworthia flowers – some comments as a character source, Appendix 9
- Haworthia flowers – some comments as a character source, Appendix 10
- A further report on Haworthia mirabilis in the Greyton area.
To the webmaster of https://haworthia-updates.haworthia.org,
Since a couple of days, the link to the index page of https://haworthia-updates.haworthia.org no longer works. When clicking on ‘Index’ in the main menu, I am led to an empty index page that only features the possibility to leave a reply. No longer being able to rely on the index means that many of the pages at this website can no longer be accessed. As I quite regularly peruse the information at this invaluable website, I hope you’ll be able to fix this flaw soon.
Sincerely,
Simon M. Wellinga
Heerenveen, The Netherlands / EU
Simon, the plugin is broken. I’m looking for a replacement. For now you should still be able to use ‘search’. ~Lawrence
Simon, all better now?
Hi Lawrence,
I am sorry I only now saw your reply. For what it’s worth, yes, everything is fine and works as before.
With best regards,
Simon