Pimelea petrophila

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Pimelea petrophila
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malvales
Family: Thymelaeaceae
Genus: Pimelea
Species:
P. petrophila
Binomial name
Pimelea petrophila

Pimelea petrophila is a species of flowering plant in the family Thymelaeaceae and is endemic to southern continental Australia. It is an erect, dioecious shrub with hairy young stems, elliptic or narrowly elliptic leaves, and heads of white flowers surrounded by 2 or 4 leaf-like involucral bracts.

Contents

Description

Pimelea petrophila is an erect, dioecious shrub that typically grows to a height of 0.3–1 m (1 ft 0 in – 3 ft 3 in) and has its young stems covered with short, fine hairs. The leaves are arranged in opposite pairs, elliptic to narrowly elliptic, 6–33 mm (0.24–1.30 in) long, 1.5–8 mm (0.059–0.315 in) wide and usually glabrous. The flowers are arranged in clusters of many white flowers, surrounded by 2 to 4 leaf-like involucral bracts 8–16 mm (0.31–0.63 in) long, 3–9 mm (0.12–0.35 in) wide and usually longer than the male flowers. The floral tube of male flowers is 4.5–6 mm (0.18–0.24 in) long, the sepals 2–3 mm (0.079–0.118 in) long, the floral tube of female flowers is 4.0–5.5 mm (0.16–0.22 in) long with sepals 1.0–1.8 mm (0.039–0.071 in) long. Flowering mainly occurs from July to October. [2] [3]

This pimelea is similar to P. flava but has seeds with a pitted (foveate) surface, whereas those of P. flava are furrowed. [2]

Taxonomy and naming

Pimelea petrophila was first formally described in 1853 by Ferdinand von Mueller in journal Linnaea . [4] [5] The specific epithet (petrophila) means "rock-loving". [6]

Distribution and habitat

This pimelea grows on rocky hills on the Eyre Peninsula, Flinders and Mount Lofty Ranges of South Australia and on the Barrier Ranges of far western New South Wales. [2] [3]

Related Research Articles

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

Pimelea microcephala, commonly known as mallee rice-flower or shrubby rice-flower is a species of flowering plant in the family Thymelaeaceae and is endemic to mainland Australia. It is an erect shrub with compact heads of male or female, white to yellow or greenish flowers on separate plants, the heads surrounded by 2 or 4 leaf-like involucral bracts.

<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 octophylla</i> Species of plant

Pimelea octophylla, commonly known as woolly riceflower or downy riceflower, is a species of flowering plant in the family Thymelaeaceae and is endemic to south-eastern continental Australia. It is an erect shrub with densely hairy young stems, narrowly elliptic leaves and heads of 22 to 45 densely hairy, cream-coloured to pale yellow flowers surrounded by 6 to 12 leaf-like involucral bracts.

<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 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 longiflora</i> Species of shrub

Pimelea longiflora is a species of flowering plant in the family Thymelaeaceae and is endemic to the southwest of Western Australia. It is an erect, spindly shrub with linear to narrowly elliptic leaves and erect clusters of white to cream-coloured flowers, surrounded by 4 to 6 green, egg-shaped involucral bracts.

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

Pimelea neoanglica, commonly known as poison pimelea or scanty riceflower, is a species of flowering plant in the family Thymelaeaceae and is endemic to inland areas of eastern Australia. It is an erect, dioecious shrub with narrowly elliptic leaves and heads of greenish-yellow flowers.

Pimelea clavata is a species of flowering plant in the family Thymelaeaceae and is endemic to near-coastal areas and offshore islands of southern Western Australia. It is an erect shrub with narrowly elliptic to more or less linear leaves arranged in opposite pairs, and head-like clusters of white to pale yellow, tube-shaped flowers surrounded by leaf-like involucral bracts.

Pimelea eyrei is a species of flowering plant in the family Thymelaeaceae and is endemic to the southwest of Western Australia. It is an erect shrub with hairy, narrowly elliptic leaves and clusters of densely hairy, white or cream-coloured flowers.

Pimelea forrestiana is a species of flowering plant in the family Thymelaeaceae and is endemic to Western Australia. It is a shrub with linear to narrowly elliptic leaves arranged in opposite pairs, and head-like clusters of yellow, tube-shaped flowers.

Pimelea gilgiana is a species of flowering plant in the family Thymelaeaceae and is endemic to near-coastal areas of north-western Western Australia. It is a shrub with narrowly egg-shaped leaves and head-like clusters of white or pinkish, dioecious flowers.

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

Pimelea haematostachya, commonly known as pimelea poppy, is a species of flowering plant in the family Thymelaeaceae and is endemic to Queensland. It is a perennial herb with narrowly egg-shaped or narrowly elliptic leaves and heads of red 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.

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

Pimelea leucantha is a species of flowering plant in the family Thymelaeaceae and is endemic to near-coastal areas in the west of Western Australia. It is a shrub with linear to narrowly egg-shaped or narrowly elliptic leaves and clusters of white to pale yellow flowers surrounded by 4 or 6 egg-shaped involucral bracts.

Pimelea macrostegia is a species of flowering plant in the family Thymelaeaceae and is endemic to Kangaroo Island in South Australia. It is a shrub with glabrous, narrowly elliptic leaves and clusters of pale yellow flowers surrounded by 4 or 6 egg-shaped, pale green involucral bracts.

Pimelea micrantha, commonly known as silky rice-flower is a species of flowering plant in the family Thymelaeaceae and is endemic to southern Australia. It is a much-branched undershrub with narrowly elliptic to lance-shaped leaves and compact clusters or heads of densely hairy, creamy white flowers.

Pimelea milliganii, commonly known as silver riceflower or Milligan's rice flower, is a species of flowering plant in the family Thymelaeaceae and is endemic to a restricted part of Tasmania. It is a low, much-branched, densely hairy shrub with more or less elliptic leaves and compact clusters of white to pinkish flowers usually surrounded by two leaf-like involucral bracts.

Pimelea neokyrea is a species of flowering plant in the family Thymelaeaceae and is endemic to the southwest of Western Australia. It is a low, spreading shrub with narrowly egg-shaped to narrowly ellipic leaves and erect clusters of white or pale yellow flowers surrounded by egg-shaped involucral bracts. It was previously included in Pimelea avonensis.

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.

Pimelea penicillaris, commonly known as sandhill riceflower, is a species of flowering plant in the family Thymelaeaceae and is endemic to Central Australia. It is an erect, dioecious shrub with densely hairy young stems, densely hairy, pale silvery green, elliptic leaves, and compact heads of white to yellow or pink flowers surrounded by 6 to 12 silky-hairy, silvery or brownish involucral bracts.

References

  1. ↑ "Pimelea petrophila". Australian Plant Census. Retrieved 11 March 2023.
  2. 1 2 3 Rye, Barbara L. "Pimelea petrophila". Flora of Australia. Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 11 March 2023.
  3. 1 2 "Pimelea petrophila". State Herbarium of South Australia. Retrieved 11 March 2023.
  4. ↑ "Pimelea petrophila". Australian Plant Name Index. Retrieved 11 March 2023.
  5. ↑ von Mueller, Ferdinand (1853). "Diagnoses et descriptiones plantarum novarum, quas in Nova Hollandia australi praecipue in regionibus interioribus". Linnaea: ein Journal für die Botanik in ihrem ganzen Umfange, oder Beiträge zur Pflanzenkunde. 25: 442. Retrieved 11 March 2023.
  6. ↑ Francis Aubie Sharr (2019). Western Australian Plant Names and their meanings. Sardinia Western Australia: Four Gables Press. p. 278. ISBN   978-0-9580341-8-0.
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