Hypocalymma minus

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Hypocalymma minus
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Hypocalymma
Species:
H. minus
Binomial name
Hypocalymma minus
(Strid & Keighery) Keighery [1]
Synonyms [1]
  • Hypocalymma cordifolium subsp. minusStrid & Keighery
  • Hypocalymma sp. Scott River (A.S.George 11773) WA Herbarium

Hypocalymma minus is a species of flowering plant in the myrtle family Myrtaceae, and is endemic to the south west of Western Australia. It is a low-growing shrub, with heart-shaped leaves arranged in opposite pairs, white or pale pink flowers usually arranged singly in leaf axils with 10 to 20 stamens in one or two rows.

Contents

Description

Hypocalymma minus is a low-growing shrub that typically grows to a height of 10–50 cm (3.9–19.7 in) high and 20–70 cm (7.9–27.6 in) wide. Its leaves are arranged in opposite pairs, heart-shaped, 4–8 mm (0.16–0.31 in) long and 3–9 mm (0.12–0.35 in) wide on a petiole 0.1–0.5 mm (0.0039–0.0197 in) long. The lower surface of the leaves is a lighter shade of green than the upper surface with tiny oil glands. The flowers are 4–6 mm (0.16–0.24 in) in diameter, mostly borne singly in leaf axils on a peduncle 4–12 mm (0.16–0.47 in) long, each flower on a pedicel up to 0.8 mm (0.031 in) long, with bracteoles 0.7–1.5 mm (0.028–0.059 in) long but that fall off as the flowers open. The floral tube is 0.6–1.2 mm (0.024–0.047 in) long and 1.0–1.5 mm (0.039–0.059 in) in diameter and the sepal lobes are broadly egg-shaped to almost round, 0.6–1.3 mm (0.024–0.051 in) long, 1.0–1.6 mm (0.039–0.063 in) wide and white, sometimes with a pink tinge. The petals are white or pale pink, 1.2–2.0 mm (0.047–0.079 in) long and there are 10 to 20 white stamens in one or two rows, the longest filaments 0.5–1 mm (0.020–0.039 in) long. Flowering mainly occurs from September to February, and the fruit is a capsule 1.3–1.5 mm (0.051–0.059 in) long and 2–3 mm (0.079–0.118 in) in diameter. [2] [3] [4]

Taxonomy

This species was first formally described in 2003 by Arne Strid and Gregory John Keighery in the Nordic Journal of Botany who gave it the name Hypocalymma cordifolium subsp. minus from specimens collected by Strid near Brennan's Ford east-north-east of Augusta in 1982. [5] [6] In 2013, Greg Keighery raised to subspecies to species status as Hypocalymma minus in the journal Nuytsia . [4] [7] The specific epithet (minus) means 'smaller' or 'less'. [8]

Distribution and habitat

This species of Hypocalymma grows in near coastal, winter-wet areas from near Busselton to Denmark in the Jarrah Forest and Warren bioregions of south-western Western Australia. [2] [3] [6]

Related Research Articles

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

Hypocalymma is a genus of evergreen shrubs in the myrtle family Myrtaceae described as a genus in 1840. The entire genus is endemic to southern Western Australia.

<i>Hypocalymma angustifolium</i> Species of flowering plant

Hypocalymma angustifolium, commonly known as white myrtle, or pink-flowered myrtle, is a species of flowering in the myrtle family Myrtaceae, and is endemic to the south west region of Western Australia. The Noongar peoples know the plant as koodgeed or kudjidi. It is an erect, multi-stemmed shrub with narrowly linear leaves, white or pale pink flowers.

<i>Rinzia orientalis</i> Species of plant

Rinzia orientalis, commonly known as desert heath-myrtle, is a species of flowering plant in the family Myrtaceae and is endemic to south-eastern Australia. It is a shrub with elliptic to narrowly oblong leaves and white or pale pink flowers usually with ten stamens.

<i>Hypocalymma asperum</i> Species of flowering plant

Hypocalymma asperum is a species of flowering in the myrtle family Myrtaceae, and is endemic to the south west region of Western Australia. It is an erect, multi-branched or spreading shrublet, with relatively short, stout leaves, and rose pink flowers.

Hypocalymma connatum is a species of flowering in the myrtle family Myrtaceae, and is endemic to Western Australia. It is a shrub, with narrowly egg-shaped leaves, probably white flowers, but has not been collected since 1935.

<i>Hypocalymma cordifolium</i> Species of flowering plant

Hypocalymma cordifolium is a species of flowering plant in the myrtle family Myrtaceae, and is endemic to the south west of Western Australia. It is usually an low-growing shrub, but is sometimes erect, with winged stems, heart-shaped leaves arranged in opposite pairs, white or pale pink flowers mostly arranged in pairs in leaf axils, and fruit containing pearly white or pale brown seeds.

<i>Hypocalymma elongatum</i> Species of flowering plant

Hypocalymma elongatum is a species of flowering plant in the myrtle family Myrtaceae, and is endemic to the south west of Western Australia. It is a large, bushy shrub with linear leaves more or less triangular in cross section, and pink flowers arranged in pairs in leaf axils with 30 to 50 stamens.

Hypocalymma ericifolium is a species of flowering plant in the myrtle family Myrtaceae, and is endemic to the south west of Western Australia. It is an erect shrublet with linear leaves that are more or less triangular in cross section, and bright yellow flowers arranged in pairs in leaf axils with 30 to 50 stamens.

Hypocalymma gardneri is a species of flowering plant in the myrtle family Myrtaceae, and is endemic to the south west of Western Australia. It is a widely spreading subshrub, with linear leaves and yellow flowers arranged in pairs in leaf axils, with 80 to 105 stamens in several rows.

<i>Hypocalymma hirsutum</i> Species of flowering plant

Hypocalymma hirsutum is a species of flowering plant in the myrtle family Myrtaceae, and is endemic to the south west of Western Australia. It is a low-growing shrub, with leaves arranged in opposite pairs, narrowly egg-shaped with the narrower end towards the base, and bright yellow flowers arranged singly in leaf axils, with usually 80 to 110 stamens in several rows.

<i>Hypocalymma jessicae</i> Species of flowering plant

Hypocalymma jessicae, commonly known as barrens myrtle, is a species of flowering plant in the myrtle family Myrtaceae, and is endemic to the south west of Western Australia. It is an erect, spreading shrub, with narrowly egg-shaped leaves with the narrower end towards the base, and pale to bright pink flowers mostly arranged in pairs in leaf axils, with 35 to 100 stamens in several rows.

Hypocalymma melaleucoides, commonly known as Fitzgerald myrtle, is a member of the family Myrtaceae and is endemic to the Fitzgerald River National Park in the south of Western Australia. It is a spreading shrub with linear leaves that are round in cross-section, and bright pink flowers, with 35 to 55 stamens in several rows.

<i>Hypocalymma myrtifolium</i> Species of flowering plant

Hypocalymma myrtifolium is a species of flowering plant in the myrtle family Myrtaceae, and is endemic to a restricted area in the south west of Western Australia. It is an erect shrub with egg-shaped to elliptic leaves and white or cream-coloured flowers with 30 to 50 stamens in several rows.

<i>Hypocalymma phillipsii</i> Species of flowering plant

Hypocalymma phillipsii is a species of flowering plant in the myrtle family Myrtaceae, and is endemic to a restricted part of Western Australia. It is an erect, spreading shrub with elliptic to very broadly egg-shaped leaves, and white flowers arranged singly or in pairs in leaf axils, with 30 to 50 stamens in several rows.

Micromyrtus imbricata is a species of the family Myrtaceae and is endemic to the south of Western Australia. It is a slender, erect shrub with broadly egg-shaped leaves, white, pink or red-tinged flowers 4–5 mm (0.16–0.20 in) in diameter, and 10 stamens.

Micromyrtus prochytes is species of the flowering plant in the family Myrtaceae and is endemic to inland areas of Western Australia. It is an erect shrub with narrowly egg-shaped leaves with the narrower end toward the base, and white or pink flowers 3.0–4.0 mm (0.12–0.16 in) in diameter.

Thryptomene caduca is a species of flowering plant in the family Myrtaceae and is endemic to a small area in the north-west of Western Australia. It is a spreading shrub with crowded egg-shaped leaves with the narrower end towards the base, and pink flowers with five petals and seven to nine stamens.

Babingtonia minutifolia is a species of flowering plant in the family Myrtaceae and is endemic to a small area in the southwest of Western Australia. It is an erect, widely spreading shrub with narrowly egg-shaped to elliptic leaves and pale pink flowers arranged singly in leaf axils, each flower with 16 to 19 stamens in a circle.

<i>Babingtonia pelloeae</i> Shrub endemic to Western Australia

Babingtonia pelloeae, commonly known as Pelloe's babingtonia, is a species of flowering plant in the family Myrtaceae and is endemic to the southwest of Western Australia. It is an erect shrub with narrowly oblong to linear leaves and pink flowers usually arranged singly in leaf axils, each flower with 12 to 20 stamens in a circle.

Babingtonia urbana, commonly known as coastal plain babingtonia, is a species of flowering plant in the family Myrtaceae and is endemic to the southwest of Western Australia. It is a shrub with linear leaves and white or pale pink flowers usually arranged singly in leaf axils, each flower with 16 to 20 stamens in a circle.

References

  1. 1 2 "Hypocalymma jessicae". Australian Plant Census. Retrieved 8 October 2024.
  2. 1 2 "Hypocalymma minus". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  3. 1 2 Rye, Barbara L.; Keighery, Greg J. "Hypocalymma minus". Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. Retrieved 9 October 2024.
  4. 1 2 Rye, Barbara L.; Wilson, Peter G.; Keighery, Gregory J. (2013). "A revision of the species of Hypocalymma (Myrtaceae: Chamelaucieae) with smooth or colliculate seeds". Nuytsia. 23: 300–301. Retrieved 9 October 2024.
  5. "Hypocalymma cordifolium subsp. minus". Australian Plant Name Index. Retrieved 8 October 2024.
  6. 1 2 Strid, P. Arne K.; Keighery, Greg J. (2003). "A taxonomic review of the genus Hypocalymma (Myrtaceae)". Nordic Journal of Botany. 22 (5): 565–567.
  7. "Hypocalymma cordifolium". Australian Plant Name Index. Retrieved 8 October 2024.
  8. Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 253. ISBN   9780958034180.