Summary
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.
| Grevillea delta | |
|---|---|
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Proteales |
| Family: | Proteaceae |
| Genus: | Grevillea |
| Species: | G. delta
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| Binomial name | |
| Grevillea delta | |
| Synonyms[1] | |
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Grevillea thelemanniana subsp. delta McGill. | |
Description edit
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 edit
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 edit
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 edit
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 edit
References edit
- ^ a b "Grevillea delta". Australian Plant Census. Retrieved 22 March 2022.
- ^ a b "Grevillea delta". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 21 March 2022.
- ^ a b c "Grevillea delta". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
- ^ "Grevillea thelemanniana subsp. delta". APNI. Retrieved 22 March 2022.
- ^ "Grevillea delta". APNI. Retrieved 22 March 2022.
- ^ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 180. ISBN 9780958034180.
- ^ "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 22 March 2022.