Isopogon

Location & distribution maps

Phylogeny & links to associated information:

Wikipedia links:       Angiosperms > Eudicots >  Proteales > Proteaceae > Isopogon 

Other links:     

Plant  information

Common name:         Coneflowers

•  Also, conesticks, conebushes

Conservation status: ...

Etymology:   

• Isopogon:  isos – equal,  pogon – beard alluding to the fringed flowers

Flowers:                  

• Bisexual flowers in a dense spike or "cone" 

• Compound leaves are deeply divided with flat or cylindrical lobes

• The flowers are usually arranged on the ends of branches, usually surrounded by bracts, in a more or less conical or spherical spike

• Each flower is bisexual and symmetrical, the tepals spreading as the flower develops

Fruit:                         

• The fruit is a small, hairy nut

• The lower part persisting until the fruit expands

• The fruit are fused to form a woody cone-like to more or less spherical structure, each fruit a nut with bracts that eventually fall and release the fruit

Leaves:         

• Rigid, usually compound, rarely simple leaves

Stem & branches: 

Roots:         

Habit:        

• Erect or prostrate shrubs 

Habitat:   

Distribution:                  

• Endemic to Australia

Species:                     

• World:           40

• Australia:     40

Additional notes:     

• Isopogon have 13 haploid chromosomes

• Taxonomy

  • The genus Isopogon was first formally described in 1809 by Joseph Knight in On the cultivation of the plants belonging to the natural order of Proteeae, preempting publication of the same name by Robert Brown in his book On the natural order of plants called Proteaceae

• The following is a list of species, subspecies and varieties of Isopogon accepted by the Australian Plant Census as at November 2020:

  • • • 1. Isopogon adenanthoides Meisn. (W.A.) - spider coneflower

        2. Isopogon alcicornis Diels (W.A.) - elkhorn coneflower

        3. Isopogon anemonifolius (Salisb.) Knight (N.S.W.) - broad-leaved drumsticks

        4. Isopogon anethifolius (Salisb.) Knight (N.S.W.) - narrow-leaved drumsticks

        5. Isopogon asper R.Br. (W.A.)

        6. Isopogon attenuatus R.Br. (W.A.)

        7. Isopogon axillaris R.Br. (W.A.)

        8. Isopogon baxteri R.Br. (W.A.) - Stirling Range coneflower

        9. Isopogon buxifolius R.Br. (W.A.)

           • Isopogon buxifolius R.Br. var. buxifolius

           • Isopogon buxifolius var. obovatus (R.Br.)Benth.

        10. Isopogon ceratophyllus R.Br. (S.A., Vic., Tas.) - wild Irishman, horny cone bush

        11. Isopogon crithmifolius F.Muell. (W.A.)

        12. Isopogon cuneatus R.Br. (W.A.) - coneflower

        13. Isopogon dawsonii F.Muell. ex R.T.Baker (N.S.W.) - Nepean cone bush

        14. Isopogon divergens R.Br. (W.A.) - spreading coneflower

        15. Isopogon drummondii Hügel ex Jacques (W.A.)

        16. Isopogon dubius (R.Br.) Druce (W.A.) - pincushion coneflower

        17. Isopogon fletcheri F.Muell. (N.S.W.) - Fletcher's drumsticks

        18. Isopogon formosus R.Br. (W.A.) - rose coneflower

            • Isopogon formosus subsp. dasylepis (Meisn.) Foreman

            • Isopogon formosus R.Br. subsp. formosus

        19. Isopogon gardneri Foreman (W.A.)

        20. Isopogon heterophyllus Meisn. (W.A.)

        21. Isopogon inconspicuus (Meisn.) Foreman (W.A.)

        22. Isopogon latifolius R.Br. (W.A.)

        23. Isopogon linearis Meisn. (W.A.)

        24. Isopogon longifolius R.Br. (W.A.)

        25. Isopogon mnoraifolius McGill. (N.S.W.)

        26. Isopogon panduratus Hislop & Rye (W.A.)

            • Isopogon panduratus subsp. palustris Hislop & Rye

            • Isopogon panduratus Hislop & Rye subsp. panduratus

        27. Isopogon petiolaris R.Br. (Qld., N.S.W.)

        28. Isopogon polycephalus R.Br. (W.A.) - clustered coneflower

        29. Isopogon prostratus McGill. (N.S.W., Vic.) - prostrate cone-bush

        30. Isopogon pruinosus Hislop & Rye (W.A.)

            • Isopogon pruinosus subsp. glabellus Hislop & Rye

            • Isopogon pruinosus Hislop & Rye subsp. pruinosus

        31. Isopogon robustus Foreman ex N.Gibson (W.A.)

        32. Isopogon scabriusculus Meisn. (W.A.)

            • Isopogon scabriusculus subsp. pubifloris Foreman

            • Isopogon scabriusculus Meisn. subsp. scabriusculus

            • Isopogon scabriusculus subsp. stenophyllus Foreman

        33. Isopogon spathulatus R.Br. (W.A.)

        34. Isopogon sphaerocephalus Lindl. (W.A.) - drumstick isopogon

        35. Isopogon teretifolius R.Br. (W.A.) - nodding coneflower

        36. Isopogon tridens (Meisn.) F.Muell. (W.A.) - three-toothed coneflower

        37. Isopogon trilobus R.Br. (W.A.) - barrel coneflower

        38. Isopogon uncinatus R.Br. (W.A.)

        39. Isopogon villosus Meisn. (W.A.)

• Two new species of Isopogon, I. autumnalis (10 December 2019) and I. nutans (5 May 2020) have been described but the names have not been accepted by the Australian Plant Census as at November 2020.

Taxa at ANBG:

• Isopogon anemonifolius

• Isopogon anemonifolius 'Little Drumsticks'

• Isopogon anethifolius

• Isopogon asper

• Isopogon attenuatus

• Isopogon buxifolius var. spathulatus

• Isopogon ceratophyllus

• Isopogon cuneatus

• Isopogon dawsonii

• Isopogon fletcheri

• Isopogon formosus 'Grey Pink Sparkler'

• Isopogon formosus subsp. formosus

• Isopogon petiolaris

• Isopogon polycephalus

• Isopogon prostratus

• Isopogon sphaerocephalus

Sources of information:

• https://en.wikipedia.org/wiki/Isopogon (2023)