Pityrodia hemigenioides

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Pityrodia hemigenioides
Status DECF P3.svg
Priority Three — Poorly Known Taxa (DEC)
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Lamiaceae
Genus: Pityrodia
Species:
P. hemigenioides
Binomial name
Pityrodia hemigenioides
Map.Quoya hemigenioides.jpg
Occurrence data from the Atlas of Living Australia

Pityrodia hemigenioides is a flowering plant in the mint family Lamiaceae and is endemic to the south-west of Western Australia. It is a spreading shrub with densely hairy branches and leaves, and pale white flowers near the ends of the branches.

Contents

Description

Pityrodia hemigenioides is a spreading shrub which grows to a height of 30–60 cm (10–20 in) with its branches densely covered with short, whitish or ash-coloured branched, hairs. The leaves vary in shape from linear to egg-shaped, mostly 8–15 mm (0.3–0.6 in) long, 4–8 mm (0.2–0.3 in) wide and covered with hairs similar to those on the branches, at least when young. Older leaves are glabrous with prominent network veins on the lower surface and the edges of the leaves are usually rolled under. [2] [3]

The flowers are arranged singly in upper leaf axils, crowded together so that they seem to form a spike of flowers. There is a leaf-like bract 7–10 mm (0.3–0.4 in) long and two smaller, leaf-like bracteoles 4–8 mm (0.2–0.3 in) long at the base of the flower. The five sepals are 7–10 mm (0.3–0.4 in) long and joined at the base to form a tube 1.5–3 mm (0.06–0.1 in) long. The sepals are covered with hairs similar to those on the leaves, except that the inside of the tube is glabrous. The five petals are joined to form a pale white tube 9–12 mm (0.4–0.5 in) long with five lobes on the end. The petal tube has a few soft hairs on the outside at first, but is glabrous inside apart from a densely hairy ring above the ovary and a few hairs on the largest petal lobe. The lower, middle lobe is broad elliptic to almost circular, 3–5 mm (0.1–0.2 in) broad and long while the other four lobes are smaller and roughly similar in size to each other, roughly egg-shaped and 3–5 mm (0.1–0.2 in) long. Flowering occurs from July to October and is followed by a hairy, oval fruit about 4–5 mm (0.16–0.20 in) long with the sepals attached and a network of veins on the surface. [2] [3]

Taxonomy and naming

This species was first formally described in 1868 by Ferdinand von Mueller who gave it the name Chloanthes hemigenioides and published the description in Fragmenta phytographiae Australiae . [4] [5] In 1870, George Bentham changed the name to Pityrodia hemigenioides. [1] [6] The specific epithet (hemigenioides) refers to a perceived similarity to plants in the genus Hemigenia [2] - the suffix -oides means "likeness" in Latin. [7]

Distribution and habitat

This pityrodia grows in yellow sand on sandplains and dunes, mainly in near-coastal areas between Geraldton and Shark Bay in the Avon Wheatbelt, Geraldton Sandplains and Yalgoo biogeographic regions. [2] [3] [8]

Conservation

Pityrodia hemigenioides is classified as "not threatened" by the Government of Western Australia Department of Parks and Wildlife. [3]

Related Research Articles

<i>Hemiphora</i> Genus of flowering plants

Hemiphora is a genus of five species of flowering plants in the mint family, Lamiaceae and is endemic to Western Australia. Plants in this genus are woolly shrubs with warty, hairy leaves and with five petals joined to form a tube-shaped flower with four stamens. These species are similar to those in the genus Chloanthes in that the base of the leaves extends down the stem. They differ from Chloanthes, in that the leaves only extend a short distance down the stem.

<i>Quoya atriplicina</i> Species of flowering plant

Quoya atriplicina, commonly known as saltbush foxglove, is a flowering plant in the mint family Lamiaceae and is endemic to Western Australia. It is a bushy shrub with its branches and leaves densely covered with a layer of hairs, giving them a greyish appearance. The leaves are broad-elliptic to almost circular in shape and the tube-shaped flowers are pink with purple spots inside.

<i>Quoya oldfieldii</i> Species of flowering plant

Quoya oldfieldii, commonly known as Oldfield's foxglove, is a flowering plant in the mint family Lamiaceae and is endemic to the south-west of Western Australia. It is an erect shrub with its branches and leaves densely covered with a layer of brownish hairs. The leaves are egg-shaped and the tube-shaped flowers are pink with purple spots inside.

<i>Pityrodia loricata</i> Species of plant

Pityrodia loricata is a flowering plant in the mint family Lamiaceae and is endemic to Australia. It is a dense, greyish, multi-stemmed shrub with whorled leaves, prominent sepals and pale, pinkish-white flowers. It is common in Western Australia and the Northern Territory and there is a single record from South Australia.

<i>Hemiphora bartlingii</i> Species of flowering plant

Hemiphora bartlingii, commonly known as woolly dragon, is a flowering plant in the mint family Lamiaceae and is endemic to the south-west of Western Australia. It is an erect shrub with branches covered with greyish, rusty-coloured hairs, leaves with a blistered appearance and with white, pink or purple flowers over an extended period.

<i>Quoya cuneata</i> Species of flowering plant

Quoya cuneata is a flowering plant in the mint family Lamiaceae and is endemic to the south-west of Western Australia. It is a spreading shrub with its branches and leaves covered with a layer of woolly, pale white or brownish hairs. The flowers are blue at first but become white with purple spots inside the petal tube.

<i>Pityrodia lepidota</i> Species of flowering plant

Pityrodia lepidota is a flowering plant in the mint family Lamiaceae and is endemic to the south-west of Western Australia. It is a small, densely-branched shrub with small leaves and whitish, bell-shaped flowers. The entire plant, apart from the petals, is densely covered with small, circular scales.

<i>Hemiphora elderi</i> Species of flowering plant

Hemiphora elderi, commonly known as red velvet, is a flowering plant in the mint family Lamiaceae and is endemic to the south-west of Western Australia. It is a small shrub with its leaves densely covered with white, woolly hairs and with small clusters of reddish-purple, bell-shaped flowers.

<i>Quoya dilatata</i> Species of flowering plant

Quoya dilatata is a flowering plant in the mint family Lamiaceae and is endemic to Western Australia. It is a low, spreading shrub with its branches and leaves densely covered with a layer of white, woolly hairs. The leaves are wrinkled or crinkly and the tube-shaped flowers are orange-red and hairy on the outside.

<i>Pityrodia chrysocalyx</i> Species of flowering plant

Pityrodia chrysocalyx is a flowering plant in the mint family Lamiaceae and is endemic to the south-west of Western Australia. It is an erect, bushy shrub with small, glossy leaves, and flowers with white petals and a golden-yellow calyx.

<i>Hemiphora uncinata</i> Species of flowering plant

Hemiphora uncinata is a flowering plant in the mint family Lamiaceae and is endemic to the south-west of Western Australia. It is an erect, spreading shrub with its branches densely covered with white, woolly hairs. Its leaves are rough and wrinkled and the flowers are tube-shaped with deep pink petals with wavy edges.

<i>Quoya loxocarpa</i> Species of flowering plant

Quoya loxocarpa is a flowering plant in the mint family Lamiaceae and is endemic to Western Australia and the Northern Territory. It is an open shrub with many spindly tangled branches. The leaves are oblong and woolly when young and the flowers are whitish pink with purple spots inside and are surrounded by woolly sepals.

Quoya paniculata is a flowering plant in the mint family Lamiaceae and is endemic to Western Australia. It is a shrub with its branches and leaves densely covered with a layer of woolly hairs. The flowers are usually arranged in small groups surrounded by woolly hairs and are bell-shaped and deep purple or deep lilac. It is similar to Dasymalla axillaris and D. terminalis but is distinguished from them by its wedge-shaped leaf ends and more northerly distribution.

<i>Quoya verbascina</i> Species of flowering plant

Quoya verbascina, commonly known as golden bush, is a flowering plant in the mint family Lamiaceae and is endemic to Western Australia. It is an erect shrub with its branches and leaves densely covered with woolly hairs. The leaves are often oblong but very variable in shape and the flowers are pinkish-white with pink spots inside and are surrounded by yellow woolly sepals.

<i>Leucopogon plumuliflorus</i> Species of plant

Leucopogon plumuliflorus is a species of flowering plant in the heath family Ericaceae and is endemic to the south-west of Western Australia. It is a weakly erect shrub with egg-shaped leaves and spikes of white or pinkish-white, tube-shaped flowers.

<i>Prostanthera canaliculata</i> Species of flowering plant

Prostanthera canaliculata is a species of flowering plant in the family Lamiaceae and is endemic to the south-west of Western Australia. It is a small, erect shrub with hairy branchlets, narrow egg-shaped to narrow elliptical leaves and pale blue or pale violet to white flowers with no markings.

<i>Hibbertia desmophylla</i> Species of flowering plant

Hibbertia desmophylla is a species of flowering plant in the family Dilleniaceae and is endemic to the south-west of Western Australia. It is a sprawling or erect, hairy shrub with spreading, densely clustered, linear leaves and yellow flowers with eleven to thirteen stamens.

<i>Lechenaultia hirsuta</i> Species of flowering plant

Lechenaultia hirsuta, commonly known as hairy leschenaultia, is a species of flowering plant in the family Goodeniaceae and is endemic to the west of Western Australia. It is a straggling, low-lying shrub with few branches, fleshy leaves, and scarlet flowers.

<i>Lechenaultia longiloba</i> Species of shrub

Lechenaultia longiloba, commonly named Irwin leschenaultia, is a species of flowering plant in the family Goodeniaceae and is endemic to the south-west of Western Australia. It is a straggling, low-lying herb or subshrub with narrow, rather fleshy leaves, and pale yellow or green petals with deep pink or red wings.

<i>Leucopogon strongylophyllus</i> Species of plant

Leucopogon strongylophyllus is a species of flowering plant in the heath family Ericaceae and is endemic to the southwest of Western Australia. It is an erect shrub with crowded egg-shaped or round leaves and white, tube-shaped flower arranged singly or in pairs in leaf axils.

References

  1. 1 2 "Pityrodia hemigenioides". APNI. Retrieved 25 January 2017.
  2. 1 2 3 4 Munir, Ahmad Abid (1971). "A taxonomic revision of the genus Pityrodia (Chloanthaceae)". Journal of the Adelaide Botanic Garden. 2 (1): 81–84.
  3. 1 2 3 4 "Pityrodia hemigenioides". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  4. ↑ "Chloanthes hemigenioides". APNI. Retrieved 28 December 2016.
  5. ↑ von Mueller, Ferdinand (1868). Fragmenta Phytographiae Australiae. Vol. 6. Melbourne: Victorian Government Printer. pp. 156–157. Retrieved 24 October 2023.
  6. ↑ Bentham, George (1870). Flora Australiensis. Vol. v. 5. London: Lovell Reeve & Co. p. 48. Retrieved 25 January 2017.
  7. ↑ Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 483.
  8. ↑ Paczkowska, Grazyna; Chapman, Alex R. (2000). The Western Australian flora : a descriptive catalogue . Perth: Wildflower Society of Western Australia. p. 214. ISBN   0646402439.
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