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Isopogon fletcheri

Isopogon fletcheri
Isopogon fletcheri
in the wild, near a Blue Mountains waterfall

Fletcher's Drumsticks

Isopogon fletcheri F.Muell.

The genus Isopogon, a member of the Proteaceae family,is endemic to Australia and contains 38 species. The greatest number of species in the genus are from Western Australia.

Isopogon fletcheri is an erect stout shrub to approx. 1.5m tall. Its leaves are flat, narrow-oblanceolate, leathery and are 12 by 2cm.The flowers are creamy yellowish, crowded in a dense globular head (inflorescence) at the end of the stems. Flowering occurs in spring-summer.

The fruit is a woody cone approximately 2 cm in diameter leading to the common name Drumsticks. Isopogon fletcheri is the only species on the east coast to have an entire leaf margin. All other east coast species have divided or textured leaves.

Isopogon fletcheri distribution is very limited. It is restricted to the Blue Mountains, predominantly around the Blackheath area. Its spread is limited due to its adaptation to sandstone and gravel soils, and its seed distribution is by gravity alone. Because of its very limited distribution and being in an ecosystem prone to fire it is listed as Vulnerable at both state and Commonwealth level. Apart from its threat from fire, the species is also sensitive to Phytophthora, a soil borne fungus.

Propagation of the plant can be done from seed, or semi-hardwood cuttings where seed is not available. Seed germination can be sporadic, usually taking 2-3 weeks but can take up to 8 weeks.

The key to cultivation is moist but well drained soil, much like or better than the conditions they have in their natural environment. The plants are reasonably hardy when given the right growing conditions. To achieve good drainage the plants can be grown in large pots with a free draining substrate. Alternatively they can be grown in a raised bed situation in a sandstone or gravel based substrate.

Low phosphorus fertilisers should only be used due to the sensitivity of the Proteaceae to the nutrient. Fertiliser should be applied in active periods of growth, spring and autumn.

Text by Peter Feilen (2014 Student Botanical Intern)

 

Name meaning: Isopogon fletcheri

Isopogon – from the Greek words meaning 'equal' and 'beard', alluding to the hairy fruits of some species

fletcheri – named after the biologist, Joseph James Fletcher (1850 – 1926), who discovered the plant in the late 1800’s. Fletcher was working for the Royal Botanic Gardens Sydney at the time.


References:

Blombery, A.M. & Maloney, B. (1992) The Proteaceae of the Sydney Region, Kangaroo Press, NSW.

Fairley, A. (2004) Seldom seen: rare plants of greater Sydney, Reed New Holland, NSW

Gledhill, D. (2008) The Names of Plants, Fourth Edition, Cambridge University Press.

Office of Environment and Heritage (2012) Fletcher’s Drumsticks – profile. Available at http://www.environment.nsw.gov.au/threatenedSpeciesApp/profile.aspx?id=10440 
[Accessed 09/02/2014]

 

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