Grevillea delta

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Grevillea delta
Grevillea delta.jpg
Status DECF P2.svg
Priority Two — Poorly Known Taxa (DEC)
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Grevillea
Species:
G. delta
Binomial name
Grevillea delta
Synonyms [1]

Grevillea thelemanniana subsp. deltaMcGill.

Grevillea delta is a species of flowering plant in the family Proteaceae and is endemic to restricted area in the south-west of Western Australia. It is a bushy, spreading shrub with hairy branchlets, divided leaves with linear lobes, and groups of red flowers with a red, green-tipped style.

Contents

Description

Grevillea delta is a bushy, spreading shrub that typically grows to a height of 0.3–1.8 m (1 ft 0 in – 5 ft 11 in) and has its branchlets covered with shaggy hairs. Its leaves are divided, the leaflets sometimes divided again, the ultimate lobes linear, 1.5–12 mm (0.059–0.472 in) long and 0.3–0.8 mm (0.012–0.031 in) wide with the edges rolled under, enclosing most of the lower surface except for the mid-vein. The flowers are arranged in groups of twelve to twenty, 20–40 mm (0.79–1.57 in) long on a woolly-hairy rachis 8–15 mm (0.31–0.59 in) long. The flowers are red with a green-tipped style, the pistil about 27 mm (1.1 in) long. Flowering occurs from July to October and the fruit is a narrow oblong follicle 10–12 mm (0.39–0.47 in) long with a conspicuous ridge. [2] [3]

Taxonomy

This grevillea was first formally described in 1986 by Donald McGillivray who gave it the name Grevillea thelemanniana subsp. delta in his book New names in Grevillea (Proteaceae) from specimens collected by Alex George near Mount Lesueur in 1974. [4] In 1994 Peter M. Olde and Neil R. Marriott raised the subspecies to species status as Grevillea delta. [5]

The specific epithet (delta) is a Greek letter, since the species was first referred to as 'Race G' of subspecies thelemanniana. [6]

Distribution and habitat

This grevillea grows in mallee heath near creeks or in low-lying areas and is only known from near the type location. [2] [3]

Conservation status

Grevillea delta is listed as "Priority Two" by the Western Australian Government Department of Biodiversity, Conservation and Attractions, [3] meaning that it is poorly known and from only one or a few locations. [7]

See also

Related Research Articles

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<i>Grevillea hookeriana</i> Species of shrub in the family Proteaceae endemic to Western Australia

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<i>Grevillea montis-cole</i> Species of shrub in the family Proteaceae endemic to Victoria, Australia

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<i>Grevillea diversifolia</i> Species of shrub in the family Proteaceae native to Western Australia

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<i>Grevillea juncifolia</i> Species of shrub or tree in the family Proteaceae endemic to inland Australia

Grevillea juncifolia, commonly known as honeysuckle grevillea, honey grevillea, honeysuckle spider flower, and many indigenous names, is a species of flowering plant in the family Proteaceae and is endemic to inland Australia. It is a bushy shrub or small tree with erect, linear leaves and clusters of bright yellow to orange flowers.

<i>Grevillea nana</i> Species of shrub in the family Proteaceae endemic to Western Australia

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<i>Grevillea althoferorum</i> Species of shrub in the family Proteaceae endemic to Western Australia

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<i>Grevillea kenneallyi</i> Species of shrub in the family Proteaceae endemic to Western Australia

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<i>Grevillea insignis</i> Species of shrub in the family Proteaceae endemic to Western Australia

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Grevillea nematophylla, commonly known as water bush or silver-leaved water bush, is a species of flowering plant in the family Proteaceae and is endemic to Australia. It is shrub or small tree with simple or pinnatisect leaves, the leaves or lobes linear, and branched, cylindrical clusters of cream-coloured flowers.

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<i>Grevillea commutata</i> Species of shrub in the family Proteaceae endemic to Western Australia

Grevillea commutata is a species of flowering plant in the family Proteaceae and is endemic to the west of Western Australia. It is a spreading, open to dense shrub with egg-shaped leaves with the narrower end towards the base, and white, cream-coloured, and pinkish-green flowers.

<i>Grevillea manglesioides</i> Species of shrub in the family Proteaceae endemic to Western Australia

Grevillea manglesioides is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a spreading shrub usually with wedge-shaped leaves with lobed ends, and toothbrush-shaped clusters of flowers, the colour varying with subspecies.

Grevillea nivea is a species of flowering plant in the family Proteaceae and is endemic to the south of Western Australia. It is a dense shrub with spreading to ascending branches, crowded, divided leaves, the end lobes linear, and dense clusters of red flowers.

<i>Grevillea obliquistigma</i> Species of shrub in the family Proteaceae endemic to Western Australia

Grevillea obliquistigma is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a spreading shrub with linear leaves, and conical to cylindrical clusters of creamy-white to yellowish cream-coloured flowers, sometimes tinged with pink.

<i>Grevillea neorigida</i> Species of plant in the Proteaceae family

Grevillea neorigida is a species of flowering plant in the family Proteaceae and is endemic to Western Australia. It is compact, spreading shrub with deeply-divided leaves, the end lobes linear and somewhat sharply-pointed, and clusters of creamy-brown to off-white flowers with a scarlet or orange-red style.

References

  1. 1 2 "Grevillea delta". Australian Plant Census. Retrieved 22 March 2022.
  2. 1 2 "Grevillea delta". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 21 March 2022.
  3. 1 2 3 "Grevillea delta". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  4. "Grevillea thelemanniana subsp. delta". APNI. Retrieved 22 March 2022.
  5. "Grevillea delta". APNI. Retrieved 22 March 2022.
  6. Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 180. ISBN   9780958034180.
  7. "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 22 March 2022.