Isopogon mnoraifolius

Isopogon mnoraifolius is a shrub of the family Proteaceae and is endemic to New South Wales.[2]

Isopogon mnoraifolius
At Angourie
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Isopogon
Species:
I. mnoraifolius
Binomial name
Isopogon mnoraifolius
Occurrence data from Australasian Virtual Herbarium

Description

It grows as a 40–80 centimetres (16–31 in) high shrub,[2] with greyish branchlets covered with fine fur. The leaves are generally divided and up to 10 centimetres (3.9 in) long and 3 centimetres (1.2 in) wide. Flowering takes place in September, with the oval or globular flower heads appearing at the ends of stems. They are 3–4 centimetres (1.2–1.6 in) in diameter, with the individual cream-yellow flowers 1.7–2 centimetres (0.67–0.79 in) long. The flowers fall to reveal an oval 2.2 cm diameter cone that bears the seeds.[3] The flowers are partly hairy, which distinguishes the species from I. anemonifolius and I. petiolaris, that both have entirely hairless flowers.[4]

Taxonomy

The species was first formally described by botanist Donald McGillivray in 1975 from material collected by him at Angourie in 1967. The species name is derived from the leaves' resemblance to a menorah.[3] McGillivray noted its existence had been overlooked until 1966 due to its similarity to the widespread Isopogon anemonifolius. He held it to be related to Isopogon dawsonii.[4]

Distribution and habitat

Isopogon mnoraifolius is found only in northeastern New South Wales in the vicinity of Grafton, where it occurs along the coast east from Angourie south to Minnie Water and the Coaldale district.[2] It is found on clay or sand soils, in open heathland or on woodland margins.[3] Its habitat is threatened by development.[5]

Cultivation

Isopogon mnoraifolius has horticultural potential as a rockery plant or pot plant,[6] although it flowers less than other isopogons. Good drainage is needed. It can be propagated readily by cuttings.[5]

References
  1. "Isopogon mnoraifolius". Australian Plant Census. Retrieved 18 November 2020.
  2. G. J. Harden. "New South Wales Flora Online: Isopogon mnoraifolius". Royal Botanic Gardens & Domain Trust, Sydney, Australia.
  3. "Isopogon mnoraifolius". Flora of Australia Online. Department of the Environment and Heritage, Australian Government.
  4. McGillivray, Donald (1975). "Australian Proteaceae: new taxa and notes". Telopea. 1 (1): 19–32 [31]. doi:10.7751/telopea19753102.
  5. Wrigley, John; Fagg, Murray (1991). Banksias, Waratahs and Grevilleas. Sydney: Angus & Robertson. p. 434. ISBN 0-207-17277-3.
  6. Elliot, Rodger W.; Jones, David L.; Blake, Trevor (1990). Encyclopaedia of Australian Plants Suitable for Cultivation: Vol. 5. Port Melbourne: Lothian Press. p. 447. ISBN 0-85091-285-7.
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