Protea cynaroides

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Protea cynaroides
Protea cynaroides 3.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Protea
Species:
P. cynaroides
Binomial name
Protea cynaroides
(L.) L.
Protea cynaroides
IUCN range
  Extant (resident)
Dist Map P Cynaroides 3.jpg
Synonyms [2]
  • Scolymocephalus cynaroides (L.) Kuntze
  • Erodendrum cynariflorum Knight
  • Protea cyclophylla (Gand.) Gand. & Schinz
  • Protea eriolepis (Gand.) Gand. & Schinz
  • Protea petiolata H.Buek ex Meisn.
  • Protea woodwardii Endl.

Protea cynaroides, also called the king protea (from Afrikaans : koningsprotea, Xhosa : isiQwane sobukumkani [3] ), is a flowering plant. It is a distinctive member of Protea , having the largest flower head in the genus. The species is also known as giant protea, honeypot or king sugar bush. It is widely distributed in the southwestern and southern parts of South Africa in the fynbos region.

Contents

The king protea is the national flower [4] of South Africa. It also is the flagship of the Protea Atlas Project, run by the South African National Botanical Institute.

The king protea has several colour forms and horticulturists have recognized 81 garden varieties, some of which have injudiciously been planted in its natural range. In some varieties the pink of the flower and red borders of leaves are replaced by a creamy yellow. This unusual flower has a long vase life in flower arrangements, and makes for an excellent dried flower.

Protea cynaroides is adapted to survive wildfires by its thick underground stem, which contains many dormant buds; these will produce the new growth after the fire.

Taxonomy

Protea cynaroides from The botanist, vol. 4: t. 166 (1840) Protea cynaroides (L.) L.jpg
Protea cynaroides from The botanist, vol. 4: t. 166 (1840)

Protea cynaroides is a species of Protea in the huge family Proteaceae. The family comprises about 80 genera with about 1,600 species. It has Gondwanan distribution, which means that it is mainly spread across the Southern Hemisphere, from Southern Africa, across to Australia, to South America, although certain species are also found in equatorial Africa, India, southern Asia and Oceania [5] as well.

Protea cynaroides is further placed within the subfamily Proteoideae, which is found mainly in Southern Africa. This subfamily is defined as those species having cluster roots, solitary ovules and indehiscent fruits. Proteoideae is further divided into four tribes: Conospermeae, Petrophileae, Proteae and Leucadendreae. [6] The genus Protea, and hence P. cynaroides, is placed under the tribe Proteae.

Etymology

The name of the plant family Proteaceae as well as the genus Protea, both to which P. cynaroides belongs to, derive from the name of the Greek god Proteus, a deity that was able to change between many forms. This is an appropriate image, seeing as both the family and the genus are known for their astonishing variety and diversity of flowers and leaves.

The specific epithet cynaroides refers to the artichoke-like appearance of the flower-heads: the artichoke belongs to the genus Cynara .

Description

P. cynaroides is a woody shrub with thick stems and large dark green, glossy leaves. Most plants are one metre in height when mature, but may vary according to locality and habitat from 0.35 to 2 metres (1 ft 2 in to 6 ft 7 in) in height. The "flowers" of P. cynaroides are actually composite flower heads (termed an inflorescence) with a collection of flowers in the centre, surrounded by large colourful bracts, from about 120 to 300 millimetres (5 to 12 in) in diameter. Large, vigorous plants produce six to ten flower heads in one season, although some exceptional plants can produce up to forty flower heads on one plant. The colour of the bracts varies from a creamy white to a deep crimson, but the soft pale pink bracts with a silvery sheen are the most prized.

Research

The diploid chromosome count is 2n = 24. [7] The genome of king protea has been sequenced and published in 2022, corresponding to the first genome sequenced in the Proteales order. [8]

Ecology

Protea cynaroides grows in a harsh environment with dry, hot summers and wet, cold winters. Several adaptions include tough, leathery leaves, which helps to prevent excessive loss of moisture, and a large taproot which penetrates deep into the soil to reach underground moisture. Like most other Proteaceae, P. cynaroides has proteoid roots, roots with dense clusters of short lateral rootlets that form a mat in the soil just below the leaf litter. These enhance solubilisation of nutrients, thus allowing nutrient uptake in the low-nutrient, phosphorus-deficient soils of its native fynbos habitat.

The flowers are fed at by a range of nectarivorous birds, mainly sunbirds and sugarbirds, including the orange-breasted sunbird (Anthobaphes violacea), southern double-collared sunbird (Cinnyris chalybeus), malachite sunbird (Nectarinia famosa), and the Cape sugarbird (Promerops cafer). In order to reach the nectar, the bird must push its bill into the inflorescence. As it does so, its bill and face gets brushed with pollen, thereby allowing for possible pollination.

A Cape sugarbird feeding from the flower. Promerops cafer 4.jpg
A Cape sugarbird feeding from the flower.

Along with birds, a host of insects are attracted to the flowerhead, such as bees, for example the Cape honeybee, and various beetle species such as rove beetles and the beetles of the huge family Scarabaeidae such as the protea beetle Trichostetha fascicularis and monkey beetles. [9]

Like many other Protea species, P. cynaroides is adapted to an environment in which bushfires are essential for reproduction and regeneration. Most Protea species can be placed in one of two broad groups according to their response to fire: reseeders are killed by fire, but fire also triggers the release of their canopy seed bank, thus promoting recruitment of the next generation; resprouters survive fire, resprouting from a lignotuber or, more rarely, epicormic buds protected by thick bark. P. cynaroides is a resprouter as it shoots up new stems from buds in its thick underground stem after a fire. [10]

Sport

The king protea is the national flower [4] of South Africa and as such lends its name to the national cricket team, whose nickname is "the Proteas". In the early 1990s, there was a political debate as to how and if the flower should be incorporated onto the national rugby teams shirts, perhaps replacing the controversial springbok.

Related Research Articles

<i>Protea</i> Genus of South African flowering plants

Protea is a genus of South African flowering plants, also called sugarbushes. It is the type genus of the Proteaceae family.

<i>Leucospermum</i> Genus of shrubs in the family Proteaceae

Leucospermum is a genus of evergreen upright, sometimes creeping shrubs that is assigned to the Proteaceae, with currently forty-eight known species.

<span class="mw-page-title-main">Cape sugarbird</span> Species of bird

The Cape sugarbird is one of the eight bird species endemic to the Fynbos biome of the Western Cape and Eastern Cape provinces of South Africa.

<span class="mw-page-title-main">Proteaceae</span> Family of ducks plants

The Proteaceae form a family of flowering plants predominantly distributed in the Southern Hemisphere. The family comprises 83 genera with about 1,660 known species. Australia and South Africa have the greatest concentrations of diversity. Together with the Platanaceae, Nelumbonaceae and in the recent APG IV system the Sabiaceae, they make up the order Proteales. Well-known Proteaceae genera include Protea, Banksia, Embothrium, Grevillea, Hakea, and Macadamia. Species such as the New South Wales waratah, king protea, and various species of Banksia, Grevillea, and Leucadendron are popular cut flowers. The nuts of Macadamia integrifolia are widely grown commercially and consumed, as are those of Gevuina avellana on a smaller scale.

<i>Protea neriifolia</i> Species of flowering plant in the family Proteaceae

Protea neriifolia, also known as the narrow-leaf sugarbush, oleander-leaved sugarbush, blue sugarbush, or the oleanderleaf protea, is a flowering plant in the genus Protea, which is endemic to South Africa.

<i>Protea caffra</i> Species of African sugarbush

Protea caffra, native to South Africa, is a small tree or shrub which occurs in open or wooded grassland, usually on rocky ridges. Its leaves are leathery and hairless. The flower head is solitary or in clusters of 3 or 4 with the involucral bracts a pale red, pink or cream colour. The fruit is a densely hairy nut. The species is highly variable and has several subspecies.

<i>Mimetes</i> Genus of shrubs in the family Proteaceae from South Africa

Mimetes, the pagoda, is a genus of evergreen shrubs or small trees 0.5–6 m (1.6–19.7 ft) high, with thirteen species assigned to the family Proteaceae. This genus, as with other proteas, is popular with nectarivorous birds such as the Cape sugarbird and several sunbird species. All species of Mimetes are endemic to the Cape Floristic Region of South Africa.

<i>Protea aristata</i> Species of flowering plant in the family Proteaceae

Protea aristata is a compact shrub with beautiful flowers which is endemic to the southwestern part of the Cape Region of South Africa. P. aristata has become one of South Africa's most famous proteas in spite of its relatively late discovery, and re-discovery in 1953. The leaves are soft, dense and needle-like and the flower heads are a stunning crimson red, it may thus be a good potential ornamental plant for South African gardens. It is usually called the Ladismith sugarbush in South African English, although it has been called pine sugar bush in Australia. In the Afrikaans language it has the vernacular name of klein-den-suikerbos.

<i>Mimetes cucullatus</i> Endemic shrub in the family Proteaceae from South Africas Western Cape province

Mimetes cucullatus is an evergreen shrub with several, mostly not branching, upright stems of 1–2 m (3–7 ft) high, that has been assigned to the family Proteaceae. It is the most widespread and most common pagoda species that can cope with a relatively large range of environmental circumstances. It is known under several names including common pagoda in English and rooistompie in Afrikaans.

<i>Mimetes hirtus</i> Species of plant from the family Proteaceae endemic to the southwest Western Cape, South Africa

Mimetes hirtus is an upright, evergreen shrub of 1½–2 m (5–6½ ft) high from the family Proteaceae. It has upright, overlapping, (broadly) lance-shaped leaves, without teeth, but with one thickened pointy tip. It has cylindric inflorescences topped by a pine apple-like tuft of pinkish-brownish, smaller and more or less horizontal leaves. The flowerheads are tightly enclosed by yellow, red-tipped bracts, only the 9–14 long red styles and the whitish silky tips of the perianth sticking out. It is primarily pollinated by the Cape sugarbird. It is an endemic species of the southwest of the Western Cape province of South Africa, and grows in wet zones at the base of south facing mountain slopes. Flower heads may be found from May to November, but peaks in July and August. The species has several vernacular names of which marsh pagoda seems to be used most.

<span class="mw-page-title-main">Proteoideae</span> Subfamily of flowering plants

Proteoideae is one of the five subfamilies of the plant family Proteaceae. The greatest diversity is in Africa, but there are also many species in Australia; a few species occur in South America, New Caledonia, and elsewhere.

<i>Mimetes fimbriifolius</i> Species of plant in the family Proteacea endemic to the Table Mountain range in South Africa

Mimetes fimbriifolius, also called cowl pagoda or the fringed pagoda, is a species of plant in the family Proteaceae. It is a dense, rounded, multi-branched tree that grows up to 4 metres in height. This attractive and striking plant flowers all year round, and produces red and yellow branch-heads and inflorescences. The nectar-rich flowers are pollinated by sunbirds and the seeds are distributed and taken underground by ants before germinating. It is endemic to the Table Mountain range in the city of Cape Town, South Africa.

<i>Protea roupelliae</i> Species of bush

Protea roupelliae is a species of Protea in the large family Proteaceae, and was named to commemorate Arabella Elizabeth Roupell (1817-1914) who spent two years in Cape Town and painted local flowers for her own pleasure. This species is also known as the silver sugarbush.

<i>Leucospermum hypophyllocarpodendron</i> Species of shrub

Leucospermum hypophyllocarpodendron is a creeping, mat-forming shrub with heads of yellow flowers and leathery, upright narrow leaves with some red-tipped teeth at their tips, from the family Proteaceae. It has long thin branches that originate from an underground rootstock and grows on poor, sandy soils in southwestern South Africa. The rose-scented flower heads can be found for August to January and are visited by different monkey beetles, bees and flies. It has two subspecies, one with greyish leaves U-shaped in cross section called grey snakestem pincushion in English and gruisslangbossie in Afrikaans, the other with green leaves that are flat in cross-section called green snakestem pincushion and groenslangbossie.

<i>Leucospermum oleifolium</i> Shrub in the family Proteaceae from the Western Cape of South Africa

Leucospermum oleifolium is an erect shrub of about 1 m (3.3 ft) high and 1½ m (5 ft) across that is assigned to the family Proteaceae. It has spreading branches, densely set with initially felty, entire, oval, olive-colored leaves of about 3½ cm long and 1½ cm (0.6 in) wide, with a bony tip that sometimes has two to five blunt teeth, with a blunt base and conspicuous veins. The flowers and their long thread-like styles are initially sulfur yellow, but soon become orange and finally turn brilliant crimson. The flower heads are about 4 cm (1.6 in) in diameter, crowded at the tip of the branches with a maximum of five that start flowering in turn. This provides for a colour spectacle from August till December. It is called by various names in South Africa such as Overberg pincushion, flame pincushion, mix pincushion and tuft pincushion. It naturally occurs in fynbos in the Western Cape province of South Africa.

<i>Leucospermum cuneiforme</i> Shrub in the family Proteaceae from the southern mountains of South Africa

Leucospermum cuneiforme is an upright evergreen shrub with many pustules growing on the lower branches, wedge-shaped leaves, and oval, initially yellow flower heads that later turn orange, with long styles sticking far beyond the perianths, jointly giving the impression of a pincushion. It is called wart-stemmed pincushion in English and luisiesbos (lice-bush) in Afrikaans. The species is common in the southern mountains of South Africa.

<i>Leucospermum calligerum</i> Shrub in the family Proteaceae from the Northern and Western Cape of South Africa

Leucospermum calligerum is a softly hairy shrub, with wand-like branches, entire ovate leaves that have a bony tip of about 25 × 6 mm, and globular heads of 2–3½ cm (0.8–1.4 in) in diameter, with two to six together near the tip of the branches and flowering in turn, that consist of 4-merous flowers, initially cream-colored, later pink, with the petals curled and the styles 2–2½ cm (0.8–1.0 in) long, sticking out like pins from a cushion. It is called arid pincushion or common louse pincushion in English and rooiluisie in Afrikaans. Well-scented flowers can be found from July to January. It naturally occurs in fynbos in the Northern Cape and Western Cape provinces of South Africa.

<i>Leucospermum tottum</i> Shrub in the family Proteaceae from the Western Cape of South Africa

Leucospermum tottum is an upright, evergreen shrub of up to 1½ m high and 2 m (6 ft) in diameter from the Proteaceae. The oblong, mostly entire leaves with a bony tip are somewhat spreading and distant from each other, and so exposing the stem. It is called elegant pincushion or ribbon pincushion in English, and oranje-rooi speldekussing or vuurhoutjies in Afrikaans. Flowers can be found between September and January. The species naturally occurs in the Western Cape province of South Africa. Two different varieties are distinguished, which are genetically very close, but differ in the color, orientation and tube-length of the flowers, the volume and sugar content of the nectar. This is probably an adaptation to different pollinators.

<i>Leucospermum formosum</i> Shrub in the family Proteaceae from the Western Cape of South Africa

Leucospermum formosum is a large upright shrub of up to 3 m (9.8 ft) high, from the family Proteaceae. It grows from a single trunk and its branches are greyish felty. The softly felty leaves are lance-shaped to elliptic, 6+12–10 cm (2.6–3.9 in) long and 14–20 mm (0.55–0.79 in) wide. The flower heads are flattened and about 15 cm (5.9 in) across, and consist of bright yellow flowers from which long, styles emerge which are strongly clockwise bent just below the white, later pink thickened tip. From above, the heads look like turning wheels. It is called silver-leaf wheel-pincushion in English. It flowers during September and October. It is an endemic species of the Western Cape province of South Africa.

<i>Protea repens</i> Species of flowering plant in the family Proteaceae

Protea repens, known as the common sugarbush and in Afrikaans as the suikerbossie, is an erect shrub growing in the southern Cape Provinces of South Africa. This plant is a relatively adaptable and variable species and can be found growing widely in various soils. Due to its showy flowers and adaptability, it is a popular garden subject for use in wildlife gardens in South Africa.

References

  1. Rebelo, A.G.; Mtshali, H.; von Staden, L. (2020). "Protea cynaroides". IUCN Red List of Threatened Species . 2020: e.T113204772A157948114. doi: 10.2305/IUCN.UK.2020-3.RLTS.T113204772A157948114.en . Retrieved 18 November 2021.
  2. "Protea cynaroides L." Plants of the World Online . Royal Botanic Gardens, Kew . Retrieved 28 July 2023.
  3. Potgieter, Liezl, ed. (2019). "king protea". The Agricultural Trilingual Dictionary. Western Cape Department of Agriculture. p. 88. ISBN   978-0-9947024-2-5.
  4. 1 2 "About government - National flower". South African Government Information. Government Communications (GCIS). 28 November 2007. Archived from the original on 26 September 2011. Retrieved 14 October 2011.
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  6. Weston, Peter H.; Barker, Nigel P. (2006). "A new suprageneric classification of the Proteaceae, with an annotated checklist of genera". Telopea. 11 (3): 314–344. doi: 10.7751/telopea20065733 .
  7. De Vos, M. P. (1943). "Cytological studies in genera of the Proteaceae." South African Journal of Science, 40(11), 113-122.
  8. Chang, Jiyang; Duong, Tuan A.; Schoeman, Cassandra; Ma, Xiao; Roodt, Danielle; Barker, Nigel; Li, Zhen; Van de Peer, Yves; Mizrachi, Eshchar (January 2023). "The genome of the king protea, Protea cynaroides". The Plant Journal. 113 (2): 262–276. doi:10.1111/tpj.16044. ISSN   0960-7412. PMC   10107735 . PMID   36424853.
  9. "Pollination of Proteas". Proteas Atlas Project. Archived from the original on 27 September 2011. Retrieved 14 October 2011.
  10. Jamieson, H.G. (July 2001). "Protea cynaroides". South African National Biodiversity Institute. Retrieved 14 October 2011.