Pimelea cremnophila

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Pimelea cremnophila
Pimelea cremnophila.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malvales
Family: Thymelaeaceae
Genus: Pimelea
Species:
P. cremnophila
Binomial name
Pimelea cremnophila
Habit in the Australian National Botanic Gardens Pimelea cremnophila habit.jpg
Habit in the Australian National Botanic Gardens

Pimelea cremnophila, commonly known as gorge rice-flower, [2] is a species of flowering plant in the family Thymelaeaceae and is endemic to a restricted area of New South Wales. It is an erect shrub with narrowly elliptic to narrowly egg-shaped leaves arranged in opposite pairs, and groups of up to four flowers that are sometimes male-only or female-only.

Contents

Description

Pimelea cremnophila is an erect shrub that typically grows to a height of up to 2.5 m (8 ft 2 in) and has reddish-brown stems, covered with bristly hairs when young. Its leaves are narrowly elliptic to narrowly egg-shaped, 10–37 mm (0.39–1.46 in) long and 2.5–6 mm (0.098–0.236 in) wide on a densely hairy petiole about 1 mm (0.039 in) long. The flowers are borne on the ends of branches or in leaf axils, singly or in groups of up to four on a peduncle about 1 mm (0.039 in) long. There are leaf like bracts 2.5–5 mm (0.098–0.197 in) long at the base of the flowers but that fall off as the flowers develop. Some flowers are functionally male, others functionally female and the remainder bisexual. Bisexual flowers have a floral tube 4.0–6.5 mm (0.16–0.26 in) long and sepals 3–4 mm (0.12–0.16 in) long, male flowers a longer floral tube, and female flowers a shorter floral tube and smaller sepals. Flowering has been observed in October, but is likely to occur throughout spring. [2] [3] [4]

Taxonomy

Pimelea cremnophila was first formally described in 2006 by Lachlan Copeland and Ian Telford from specimens collected in the Oxley Wild Rivers National Park in 2004. [3] [5] The specific epithet (cremnophila) means "cliff-loving". [3]

Distribution and habitat

Gorge rice-flower grows on exposed cliff-tops and sheltered cliff-sides at altitudes between 1,050 and 1,090 m (3,440 and 3,580 ft) in the southern part of the Oxley Wild Rivers National Park. [2] [3] [4]

Conservation status

At the time of writing their paper, Copeland and Telford reported that P. cremniphila was "known from fewer than 100 individuals". In 2015, a visit by Copeland to the area failed to find two of the three populations. The main threats to the species are grazing by feral goats, drought and inappropriate fire regimes. The species is listed as "critically endangered" under the New South Wales Government Biodiversity Conservation Act 2016 . [2] [6]

Related Research Articles

<i>Pimelea flava</i> Species of plant

Pimelea flava is a species of flowering plant in the family Thymelaeaceae and is endemic to south-eastern Australia. It is a shrub with narrowly elliptic to egg-shaped leaves arranged in opposite pairs, and compact clusters of 9 or more flowers with 2 or 4 elliptic to circular involucral bracts at the base. The flowers and bracts are white or yellow, depending on subspecies.

<i>Pimelea alpina</i> Species of shrub

Pimelea alpina, the alpine rice-flower, is a species of flowering plant in the family Thymelaeaceae and is endemic to south-eastern continental Australia. It is an erect, prostrate or spreading shrub or undershrub with narrowly elliptic leaves crowded at the ends of branches and heads of pinkish red or white flowers.

<i>Pimelea calcicola</i> Species of shrub

Pimelea calcicola is a species of flowering plant in the family Thymelaeaceae and is endemic to part of the west coast of Western Australia. It is an erect to spreading shrub with elliptic leaves arranged in opposite pairs, and head-like racemes of pale to deep pink, tube-shaped flowers surrounded by leaf-like involucral bracts.

<i>Pimelea ferruginea</i> Species of shrub

Pimelea ferruginea, commonly known as pink rice flower or coastal banjine, is a species of flowering plant in the family Thymelaeaceae and is endemic to near-coastal areas of south-western Western Australia. It is a dense, erect shrub with elliptic to narrowly elliptic leaves and head-like clusters of pale to deep pink, tube-shaped flowers.

<i>Pimelea hewardiana</i> Species of plant

Pimelea hewardiana, commonly known as forked rice-flower, is a species of flowering plant in the family Thymelaeaceae and is endemic to south-eastern continental Australia. It is a shrub with narrowly elliptic leaves and head-like clusters of 7 to 34 unisexual yellow flowers.

<i>Pimelea serpyllifolia</i> Species of plant


Pimelea serpyllifolia, commonly known as thyme riceflower, is a species of flowering plant in the family Thymelaeaceae and is endemic to southern Australia. It is an erect shrub with narrowly elliptic to spatula-shaped leaves, and compact heads of 4 to 12 yellow, yellowish-green or white flowers surrounded by 2 or 4 leaf-like involucral bracts. Male and female flowers are borne on separate plants.

<i>Pimelea ciliolaris</i> Species of shrub

Pimelea ciliolaris is a species of flowering plant in the family Thymelaeaceae and is endemic to a restricted area of New South Wales. It is a stunted shrub with narrowly elliptic leaves and heads of densely hairy, cream-coloured to pale yellow flowers.

<i>Pimelea treyvaudii</i> Species of shrub

Pimelea treyvaudii, commonly known as grey rice-flower, is a species of shrub in the family Thymelaeaceae. It has white flowers in spherical heads at the end of branches and is endemic to eastern Australia.

<i>Pimelea pagophila</i> Species of shrub

Pimelea pagophila, commonly known as Grampians rice-flower, is a species of shrub in the family Thymelaeaceae. It has a restricted distribution, white flowers in spherical heads at the end of branches, green leaves arranged in opposite pairs and is endemic to Victoria, Australia.

<i>Pimelea avonensis</i> Species of shrub

Pimelea avonensis is a species of flowering plant in the family Thymelaeaceae and is endemic to the south-west of Western Australia. It is a shrub with narrowly egg-shaped or elliptic leaves and clusters of white, tube-shaped flowers.

Pimelea elongata is a species of flowering plant in the family Thymelaeaceae and is endemic to inland areas of eastern Australia. It is a slender forb with linear to narrowly elliptic leaves and spikes of hairy, yellowish-green flowers.

<i>Pimelea interioris</i> Species of flowering plant

Pimelea interioris is a species of flowering plant in the family Thymelaeaceae and is endemic to a restricted part of the south of the Northern Territory of Australia. It is a shrub with hairy, narrowly elliptic leaves and clusters of creamy-white to pale yellow, separate male and female flowers.

Pimelea lanata is a species of flowering plant in the family Thymelaeaceae and is endemic to the southwest of Western Australia. It is a shrub with narrowly elliptic leaves and erect clusters of white to deep pink flowers surrounded by 4, mostly green, involucral bracts.

Pimelea leptospermoides, commonly known as serpentine rice flower, is a species of flowering plant in the family Thymelaeaceae and is endemic to Queensland. It is a shrub with narrowly egg-shaped to elliptic leaves and white, tube-shaped flowers arranged in groups of up to 7.

Pimelea pelinos is a species of flowering plant in the family Thymelaeaceae and is endemic to a small area in the southwest of Western Australia. It is an erect, straggling shrub with narrowly egg-shaped leaves, the narrower end towards the base, and erect clusters of cream-coloured, unisexual flowers surrounded by 2 or 4 egg-shaped, leaf-like involucral bracts.

<i>Pimelea phylicoides</i> Species of shrub

Pimelea phylicoides, commonly known as heath rice-flower, is a species of flowering plant in the family Thymelaeaceae and is endemic to southern continental Australia. It is an erect shrub with densely hairy young stems, narrowly egg-shaped to elliptic leaves, and heads of white flowers surrounded by 3 to 6 involucral bracts.

<i>Pimelea pygmaea</i> Species of flowering plant

Pimelea pygmaea is a species of flowering plant in the family Thymelaeaceae and is endemic to Tasmania. It is prostrate, cushion-like undershrub with narrowly oblong to elliptic leaves arranged in opposite pairs, and white flowers arranged singly on the ends of the many branches.

<i>Pimelea simplex</i> Species of plant

Pimelea simplex, commonly known as desert rice-flower, is a species of flowering plant in the family Thymelaeaceae and is endemic to inland Australia. It is a herb or semi-woody annual with narrowly elliptic to linear leaves, and compact heads of densely hairy white to yellowish-green flowers.

<i>Pimelea stricta</i> Species of plant

Pimelea stricta, commonly known as gaunt rice-flower, is a species of flowering plant in the family Thymelaeaceae and is endemic to south-eastern continental Australia. It is an erect shrub with narrowly elliptic or linear leaves, and compact heads of densely hairy, creamy-white to yellow flowers surrounded by 4 egg-shaped involucral bracts.

Pimelea subvillifera is a species of flowering plant in the family Thymelaeaceae and is native to the south-west of Western Australia and to South Australia. It is usually an erect shrub and has elliptic leaves and heads of white flowers surrounded by 8 to 18 narrowly egg-shaped involucral bracts.

References

  1. ↑ "Pimelea cremnophila". Australian Plant Census. Retrieved 17 October 2022.
  2. 1 2 3 4 "Gorge rice-flower". New South Wales Government Office of Environment and Heritage. Retrieved 17 October 2022.
  3. 1 2 3 4 Copeland, Lachlan M.; Telford, Ian R. (2006). "Pimelea cremnophila (Thymelaeaceae), a new species from the New England Tablelands escarpment of northern New South Wales". Telopea. 11 (2): 111–115. doi:10.7751/telopea20065712 . Retrieved 17 October 2022.
  4. 1 2 Murray, Louisa. "Pimelea cremnophila". Royal Botanic Garden Sydney. Retrieved 17 October 2022.
  5. ↑ "Pimelea cremnophila". APNI. Retrieved 17 October 2022.
  6. ↑ "Conservation advice – Pimelea cremnophila" (PDF). Australian Government Department of Climate Change, Energy, Water and the Environment. Retrieved 17 October 2022.
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