| Banksia sessilis var. sessilis | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Proteales |
| Family: | Proteaceae |
| Genus: | Banksia |
| Species: | |
| Variety: | B. s. var. sessilis |
| Trinomial name | |
| Banksia sessilis var. sessilis | |
Banksia sessilis var. sessilis is the most populous and most widespread variety of Banksia sessilis (parrot bush).
The leaves of this variety are larger than those of B. sessilis var. cygnorum but smaller than those of B. sessilis var. cordata. It differs from B. sessilis var. flabellifolia in having lobes at the base of many leaves. [1] [2]
As the autonymous variety, B. sessilis var. sessilis encompasses the type material of the species; thus collections of this variety date back to the 1791 visit of Archibald Menzies to King George Sound. [3] However the autonym was not needed until 1996, when Alex George published the other three varieties. As this taxon was then placed within the genus Dryandra , this varieties name was then Dryandra sessilis var. sessilis. It was transferred to its current name in 2007, when Austin Mast and Kevin Thiele transferred Dryandra into Banksia . [4]
B. sessilis var. sessilis occurs in a wide belt running from Regans Ford and Moora in the north, southeast to Collie and Bremer Bay. [1]
It is a hardy plant that tolerates a wide range of soils and conditions, including drought and moderate frost. It flowers heavily, and produces an abundance of honey. However it is too large for smaller gardens, and in suitable conditions can produce many seedlings. [1]
Banksia sessilis, commonly known as parrot bush, is a species of shrub or tree in the plant genus Banksia of the family Proteaceae. It had been known as Dryandra sessilis until 2007, when the genus Dryandra was sunk into Banksia. The Noongar peoples know the plant as budjan or butyak. Widespread throughout southwest Western Australia, it is found on sandy soils over laterite or limestone, often as an understorey plant in open forest, woodland or shrubland. Encountered as a shrub or small tree up to 6 m (20 ft) in height, it has prickly dark green leaves and dome-shaped cream-yellow flowerheads. Flowering from winter through to late spring, it provides a key source of food—both the nectar and the insects it attracts—for honeyeaters in the cooler months, and species diversity is reduced in areas where there is little or no parrot bush occurring. Several species of honeyeater, some species of native bee, and the European honey bee seek out and consume the nectar, while the long-billed black cockatoo and Australian ringneck eat the seed. The life cycle of Banksia sessilis is adapted to regular bushfires. Killed by fire and regenerating by seed afterwards, each shrub generally produces many flowerheads and a massive amount of seed. It can recolonise disturbed areas, and may grow in thickets.
Banksia armata, commonly known as prickly dryandra, is a species of often sprawling shrub that is endemic to Western Australia. It has deeply serrated leaves with sharply pointed lobes and spikes of about 45 to 70 yellow flowers.
Banksia erythrocephala is a species of prickly shrub that is endemic to Western Australia. It has erect stems, sharply pointed pinnatifid leaves, cream-coloured and reddish black or all cream-coloured and yellow flowers, and egg-shaped fruit.
Banksia acuminata is a rare prostrate shrub endemic to south-west Western Australia. It was published in 1848 as Dryandra preissii, but transferred into Banksia as B. acuminata in 2007.
Banksia proteoides, commonly known as king dryandra, is a shrub endemic to Western Australia. It was known as Dryandra proteoides until 2007, when all Dryandra species were transferred to Banksia by Austin Mast and Kevin Thiele.
Banksia undata var. undata is a shrub endemic to Western Australia.
Banksia undata var. splendens is a shrub endemic to Western Australia.
Banksia sessilis var. cordata is a variety of Banksia sessilis, with unusually large leaves and flower heads. It is a rare variety that is restricted to the extreme south-west corner of Western Australia.
Banksia sessilis var. cygnorum is a variety of Banksia sessilis.
Banksia sessilis var. flabellifolia is a variety of Banksia sessilis.
Banksia erythrocephala var. erythrocephala is a variety of Banksia erythrocephala. As an autonym, it is defined as encompassing the type material of the species. It was known as Dryandra erythrocephala var. erythrocephala until 2007, when Austin Mast and Kevin Thiele sunk all Dryandra into Banksia. As with other members of Banksia ser. Dryandra, it is endemic to the South West Botanical Province of Western Australia.
Banksia fraseri var. fraseri is a variety of Banksia fraseri. As an autonym, it is defined as encompassing the type material of the species. It was known as Dryandra fraseri var. fraseri until 2007, when Austin Mast and Kevin Thiele sunk all Dryandra into Banksia. As with other members of Banksia ser. Dryandra, it is endemic to the South West Botanical Province of Western Australia.
Banksia subpinnatifida var. subpinnatifida is a variety of Banksia subpinnatifida. As an autonym, it is defined as encompassing the type material of the species. It was known as Dryandra subpinnatifida var. subpinnatifida until 2007, when Austin Mast and Kevin Thiele sunk all Dryandra into Banksia. As with other members of Banksia ser. Dryandra, it is endemic to the South West Botanical Province of Western Australia.
Dryandra ser. Floribundae is an obsolete series within the former genus Dryandra. It was first published by George Bentham in 1870, and was given a new circumscription by Alex George in 1996, but was ultimately discarded in 2007 when Austin Mast and Kevin Thiele sunk Dryandra into Banksia.
Banksia dallanneyi var. mellicula is a variety of Banksia dallanneyi subsp. dallanneyi. It was known as Dryandra lindleyana var. mellicula until 2007, when Austin Mast and Kevin Thiele sunk all Dryandra into Banksia. Since there was already a Banksia named Banksia lindleyana, Mast and Thiele had to choose a new specific epithet for D. lindleyana and hence for this variety of it. As with other members of Banksia ser. Dryandra, it is endemic to the South West Botanical Province of Western Australia.
Banksia densa var. parva is a variety of Banksia densa. It was known as Dryandra conferta var. parva until 2007, when Austin Mast and Kevin Thiele sunk all Dryandra into Banksia. Since there was already a Banksia named Banksia conferta, Mast and Thiele had to choose a new specific epithet for D. conferta and hence for this variety of it. As with other members of Banksia ser. Dryandra, it is endemic to the South West Botanical Province of Western Australia.
Banksia tenuis var. reptans is a variety of Banksia tenuis. It was known as Dryandra tenuifolia var. reptans until 2007, when Austin Mast and Kevin Thiele sunk all Dryandra into Banksia. Since the name Banksia tenuifolia had already been used, Mast and Thiele had to choose a new specific epithet for D. tenuifolia and hence for this variety of it. As with other members of Banksia ser. Dryandra, it is endemic to the South West Botanical Province of Western Australia.
Banksia tenuis var. tenuis is a variety of Banksia tenuis. It was known as Dryandra tenuifolia var. tenuifolia until 2007, when Austin Mast and Kevin Thiele sunk all Dryandra into Banksia. Since the name Banksia tenuifolia had already been used, Mast and Thiele had to choose a new specific epithet for D. tenuifolia and hence for this variety of it. As with other members of Banksia ser. Dryandra, it is endemic to the South West Botanical Province of Western Australia. As an autonym, it is defined as encompassing the type material of the species.
Banksia densa var. densa is a variety of Banksia densa. It was known as Dryandra conferta var. conferta until 2007, when Austin Mast and Kevin Thiele sunk all Dryandra into Banksia. Since the name Banksia conferta had already been used, Mast and Thiele had to choose a new specific epithet for D. conferta and hence for this variety of it. As with other members of Banksia ser. Dryandra, it is endemic to the South West Botanical Province of Western Australia. As an autonym, it is defined as encompassing the type material of the species.
Banksia dallanneyi var. dallanneyi is a variety of Banksia dallanneyi subsp. dallanneyi. It was known as Dryandra lindleyana var. lindleyana until 2007, when Austin Mast and Kevin Thiele sunk all Dryandra into Banksia. Since the name Banksia lindleyana had already been used, Mast and Thiele had to choose a new specific epithet for D. lindleyana and hence for this variety of it. As with other members of Banksia ser. Dryandra, it is endemic to the South West Botanical Province of Western Australia. As an autonym, it is defined as encompassing the type material of the species.
