Leucospermum muirii

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Leucospermum muirii
Leucospermum muirii (5280933180).jpg
Leucospermum muirii (5280932544).jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Leucospermum
Species:
L. muirii
Binomial name
Leucospermum muirii

Leucospermum muirii is a rounded, upright, evergreen shrub of about 1+12 m (4.9 ft) high, with a single trunk at its base, that is assigned to the Proteaceae. The flowering branches are 2–3 mm (0.079–0.118 in) thick and are initially grey due to a covering of fine crinkly hairs, which are soon lost. The very narrow spade-shaped leaves of about 5 cm (2.0 in) long and 34 cm (0.30 in) wide carry three to seven teeth, and also quickly lose their soft layer of hairs. Its smallish globe-shaped flower heads of 2–3 cm (0.79–1.18 in) in diameter occur with one to four together, each on a stalk of 1–2 cm (0.39–0.79 in) long. It has pale to greenish yellow flowers, becoming orange with age, with some long hairs near their tips, from which straight styles stick out. This gives the flower head the likeness of a pincushion. It flowers from July till October and is pollinated by birds. It is called Albertinia pincushion in English and bloukoolhout in Afrikaans. It is an endemic species that can only be found near Albertinia in the very south of the Western Cape province of South Africa. [3] [4]

Contents

Description

Leucospermum muirii is an evergreen, rounded, upright shrub of about 1+12 m (4.9 ft) high, branching from a central trunk. The flowering branches are slim, 2–3 mm (0.079–0.118 in) thick, which are initially covered with soft grey crinkly hairs, which are lost over time. The leaves an almost linear to very narrowly spade-shaped, 4–6 cm (1.6–2.4 in) long and 4–10 mm (0.16–0.39 in) wide with three to seven teeth near its tip, the surface at first with soft crisped hairs which are soon lost however. [2]

The flower heads are set individually or in groups of two to four together, globe-shaped 2–3 cm (0.79–1.18 in) in diameter, each set on an inflorescence stalk of 1–2 cm (0.39–0.79 in) long. The common base of the flowers in the same head is broad conical in shape, approximately 1 cm (0.39 in) long and 8 mm (0.31 in) wide, which is subtended by oval bracts with a pointy tip, 7–8 mm (0.28–0.31 in) long and about 4 mm (0.16 in) wide, tightly overlapping, rubbery in consistency, greyish softly hairy. The bracts that subtend the individual flower are broadly oval with a pointy tip, about 7 mm (0.28 in) long and 5 mm (0.20 in) wide, rubbery in consistency, with dense woolly hairs at their base and rubbery in consistency. The 4-merous perianth is 1+141+12 cm (0.49–0.59 in) long, pale to greenish yellow in colour. The lowest, fully merged, part of the perianth, called tube, is about ½ cm (0.2 in) long, cylindric in shape or slightly laterally compressed, hairless at base and minutely powdery where it merges into the middle part (or claws) where the perianth is split lengthwise, which is also powdery or have very short hairs. The upper part (or limbs), which enclosed the pollen presenter in the bud consists of four narrowly lanceolate lobes of about 2 mm (0.079 in) long, with the outer surface of the limbs facing sideways and to the center of the flower head have a tuft of long hairs, the lobe facing the rim of the flower head hardly so. From the perianth emerges a straight style, 1+142+14 cm (0.49–0.89 in) long, topped by a very slight thickening called pollen presenter. That is cylinder-shaped, about 1 mm (0.039 in) long, with the very end split in two. The ovary is subtended by four pale yellow, awl-shaped nectar producing scales of about 1 mm (0.039 in) long. [2]

The subtribe Proteinae, to which the genus Leucospermum has been assigned, consistently has a basic chromosome number of twelve (2n=24). [5]

L. muirii looks like L. truncatum , which has more soft hair on its broader leaves. [6]

Taxonomy

As far as we know, the Albertinia pincushion was first collected for science by the South African naturalist John Muir in 1909, from a location called Zandhoogte near Albertinia. In 1910, Edwin Percy Phillips described it and named it in honor of its collector Leucospermum muirii. [2] It has been assigned to the section Tumiditubus . [7]

Distribution, habitat and ecology

Leucospermum muirii is an endemic species restricted to the Albertinia plateau a few miles east and west of Albertinia village and from there to the coast in the south between Still Bay and Gouritsmond at altitudes varying between 90 and 250 m (300 and 820 ft). The Albertinia pincushion only grows in flats consisting of deep, white sands, where it may form small dense stands, in the company of several Ericaceae, tall Restionaceae, Leucadendron galpinii , Leucospermum praecox and Protea repens . It is pollinated by birds. The seeds need about two months to ripen and subsequently fall to the ground, to be collected by ants and carried into their underground nests. The plants die when exposed to one of the wildfires that naturally occurs in the fynbos where this plant grows, but the stored seeds will subsequently germinate to continuate the population. [2] [3] [4]

Conservation

information sign in the Kirstenbosch National Botanical Garden Leucospermum muirii sign.JPG
information sign in the Kirstenbosch National Botanical Garden

The Albertinia pincushion is considered endangered as it has a very limited distribution of below 169 km2 (65 sq mi) and is under thread by agricultural development, so-called field improvements to increase the yield of tall restionids for thatching, invasive species, urban expansion near Albertinia and climate change. The species can often only be found on roadsides, suggesting it has already disappeared from the surrounding fields. [3]

Related Research Articles

<i>Leucospermum cordifolium</i> Ornamental pincushion is a shrub in the family Proteaceae from the Western Cape of South Africa

Leucospermum cordifolium is an upright, evergreen shrub of up to 1½ m (5 ft) high from the Proteaceae. The flower heads are globe-shape with a flattened top, 10–12 cm (3.9–4.7 in) in diameter, and are carried individually or with two or three together mostly at a right angle to its branch. The perianth is 3–3½ cm long, yellow, orange or crimson in color. From each flower emerges a 4½–6 cm (1.8–2.4 in) long style sticking out horizontally but curving upwards near the obliquely, shell-shaped, thicker pollen presenter. This gives each head the appearance of a pincushion. Its common name is ornamental pincushion in English and bobbejaanklou in Afrikaans. It flowers between the middle of July and the end of November. It naturally occurs near the south coast of the Western Cape province of South Africa. Varieties and hybrids of this species are used as cut flower and garden plant.

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

Leucospermum conocarpodendron is the largest species of the genus Leucospermum, reaching almost tree-like proportions of 5–6 m (16–20 ft) high with a firm trunk that is covered in a thick layer of cork that protects it from most fires. It has greyish or green narrow or broad inverted egg-shaped leaves with three to ten teeth near the tip and large yellow flowerheads, with firm, bent, yellow styles that stick far beyond the rest of the flower and give the impression of a pincushion. It is commonly known as the tree pincushion in English or goudsboom in Afrikaans. They naturally occur near Cape Town, South Africa.

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

Leucospermum reflexum is a large rounded shrub that is assigned to the family Proteaceae. It grows from a single trunk and its branches are covered in smooth grey bark. It has small elliptic to inverted lance-shaped greyish leaves of only 2–5½ cm (0.8–2.2 in) long. The heads consist of mostly dark orange 4-merous flowers, from which long, identically colored styles emerge, which are directed straight down during flowering. It is called rocket pincushion or skyrocket leucospermum in English and perdekop in Afrikaans. It flowers from the end of August to December. It is an endemic species that can only be found in the southwest of South Africa.

<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 prostratum</i> Trailing shrub in the family Proteaceae from the Western Cape of South Africa

Leucospermum prostratum is a trailing shrub of up to 4 m (13 ft) in diameter from the Proteaceae. It has alternately set, about 3 cm (1.2 in) long, lance-shaped, olive-colored, upright leaves, and produces sweetly scented, compact, hemispherical flower heads, with long styles sticking out far from the perianth tube, which jointly give the flower head the appearance of a pincushion. The fragrant flowers found between July and December are initially yellow but turn orange when older. It is an endemic species restricted to the south coast of the Western Cape province of South Africa. Its common name is yellow-trailing pincushion.

<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 saxosum</i> Species of evergreen shrub

Leucospermum saxosum is an upright evergreen shrub of up to 2 m (6.6 ft) high, that is assigned to the family Proteaceae. It has lance-shaped, leathery leaves and egg-shaped flower heads of about 5 cm (2.0 in) in diameter, with initially yellow-orange flowers, later turning crimson, from which long styles stick out, giving the flower head the appearance of a pincushion. It is called escarpment pincushion in English. It grows on quartzite soils in the mountains on the Zimbabwe-Mozambique border and in eastern Transvaal.

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

Leucospermum lineare is an evergreen shrub with linear leaves and is assigned to the Proteaceae. There are two distinct forms that have not been formally recognized as separate taxa. There is an upright form with orange flower heads of up to 2 m (6.6 ft) high, and a sprawling form of 2–3 m (6.6–9.8 ft) in diameter with yellow flower heads. Its common name is needle-leaf pincushion, or narrow-leaf pincushion, in English and smalblaarspeldekussing in Afrikaans. The orange-flowered form is called tangerine pincushion or assegaaibos pincushion. Flowering occurs in the first half of the southern hemisphere season, but peaks in September and October. It is an endemic species that can only be found in the southwest of the Western Cape province of South Africa.

<i>Leucospermum gerrardii</i> Shrub in the family Proteaceae from eastern South Africa and Eswatini

Leucospermum gerrardii is an evergreen, mat-forming shrub of mostly about 30 cm (12 in) high and up to 1 m (3.3 ft) in diameter, with branches originating from an underground rootstock. It has narrow leaves, sometimes with three or four teeth near the tip, and prominent, raised, netted to parallel veins. The flower heads are egg-shaped about 5 cm (2 in) in diameter and consist of at first yellow, later orange or scarlet perianths, and long styles reaching far beyond the perianth and together giving the impression of a pincushion. It is assigned to the family Proteaceae. It can be found in South Africa and Eswatini. It mostly flowers between September and November. The species is called dwarf pincushion or soapstone pincushion in English.

<i>Leucospermum hamatum</i> Prostrate shrublet in the family Proteaceae from the Western Cape of South Africa

Leucospermum hamatum is mat-forming, evergreen shrublet of only about 10 cm (3.9 in) high, from the Proteaceae. It is usually 1–3 m (3.3–9.8 ft) in diameter, has long trailing stems and upright, inverted lance-shaped, entire leaves but for one to five shallow reddish bony teeth near the tip. Its small flower heads of 1½–2 cm (0.6–0.8 in) in diameter, consist of four to seven drab carmine-colored flowers that strongly curve back to the centre of the head. It mainly flowers from July till November and is pollinated by mice. It has been given the common name Ruitersbos pincushion.

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

Leucospermum harpagonatum is an evergreen trailing shrublet with leathery, line-shaped, upright leaves and small heads with eight to ten cream, later carmine-colored, strongly incurved flowers assigned to the family Proteaceae. It is reminiscent of the hottentot fig without its flowers. It is called McGregor pincushion in English and flowers from late August till early November. It is critically endangered and occurs only in a very small area in the Western Cape province, South Africa.

<i>Leucospermum glabrum</i> Shrub in the family Proteaceae from the south coast of South Africa

Leucospermum glabrum is an evergreen, rounded, upright shrub of up to 2½ m (8 ft) high, that is assigned to the family Proteaceae. It has broad inverted egg-shaped leaves with seven to fourteen teeth near their tips, and oval flower heads of about 8 cm (3.2 in) in diameter, with hairy, orange and carmine-coloured flowers from which long styles with a thickened end emerge, giving the flowerhead as a whole the appearance of a pincushion. It flowers between August and October. Its common name is Outeniqua pincushion in English and Outeniekwa-kreupelhout in Afrikaans. It naturally occurs in a limited area on the south coast of South Africa.

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

Leucospermum praecox is an evergreen, rounded, upright shrub of up to 3 m (9 ft) high, and 4 m (12 ft) in diameter that is assigned to the family Proteaceae. It has hairless, inverted egg-shaped to broadly wedge-shaped leaves of about 5 cm (2 in) long with six to eleven teeth near the tip, globe-shaped flower head with initially yellow flowers, later orange or scarlet, with styles sticking far out, giving the head the appearance of a pincushion. It is called Mossel Bay pincushion or large-tufted pincushion in English. It flowers between April and September. It is an endemic species that is restricted to the very south of the Western Cape province of South Africa.

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

Leucospermum cordatum is an evergreen, creeping shrublet of about 20 cm (8 in) high from the family Proteaceae. It has pale cream flower heads, from which pink flushed styles emerge, the whole reminiscent of a pincushion. Its common name is heart-leaf pincushion in English. It flowers between July and December but the peak of the flowering period is from September to November. It is an endemic species, that is only known from two locations close to each other in the Western Cape province of South Africa.

<i>Leucospermum innovans</i> Shrub in the family Proteaceae from the Eastern Cape and Kwazulu-Natal in South Africa

Leucospermum innovans is an upright evergreen shrub with many pustules growing on the lower branches, wedge-shaped leaves, and oval, flower heads that are yellow on the outside, but with scarlet stripes on the inside of the perianth claws, with long styles sticking far beyond the perianths, jointly giving the impression of a pincushion. It is called Pondoland pincushion or Transkei pincushion in English. Flowers occur on and off between July and December, but flowering peaks in September and October.

<i>Leucospermum pluridens</i> Shrub in the family Proteaceae from southern South Africa

Leucospermum pluridens is a large upright evergreen shrub of up to 3 m (9.8 ft) high assigned to the family Proteaceae. It has leathery, oblong to wedge-shaped leaves of about 7½ cm long and 2½ cm wide, deeply incised near the tip with seven to ten teeth. It has initially yellow, later carmine coloured flower heads. The 2 cm long bracts have slender, recurved tips. From the center of the perianth emerge long styles that jointly give the impression of a pincushion. It is called Robinson pincushion in English and Robinson-kreupelhout in Afrikaans. Flowers can be found between September and December. It naturally occurs in the south of South Africa.

<i>Leucospermum utriculosum</i> Species of shrub in the family Proteaceae from the Western Cape province of South Africa

Leucospermum utriculosum is a lax, evergreen, upright and arching shrub of 1–2 m high, from the family Proteaceae. It has hairless inverted lance-shaped to oblong leaves tipped with three to five teeth and globe-shaped to flattened light yellow to coppery flowerheads of 5–8 cm (2.0–3.2 in) in diameter. From the center of the flowers emerge almost straight styles that jointly give the impression of a pincushion. It is called Breede River pincushion in English. Although flower heads may occur on and off between May and March, the peak season is from September to November. It is known from the Western Cape province of South Africa.

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

Leucospermum secundifolium is a low, evergreen shrub that grows along the ground, the tip of the branches slightly rising, which has been assigned to the family Proteaceae. It has narrowly elliptic leaves with a distinct leafstalk, and few-flowered and very small heads of 1–1½ cm (0.4–0.6 in) across. It is called stalked pincushion in English. The sweetly scented flower heads may be found around early December. It is an endemic species that only grows in a small area of the Western Cape province of South-Africa.

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

Leucospermum gracile is a low spreading shrub of 30–40 cm high and forms open mats of 1½ m (5 ft) in diameter, from the family Proteaceae. It has reddish flowering stems, oblong to linear leaves of 2–4½ cm (0.8–1.8 in) long and 2–5 mm (0.08–0.20 in) wide, with one or three teeth. The initially yellow, later orange flower heads of 2½–3 cm (1.0–1.2 in) in diameter are flat-topped. The flower heads occur from July to October. From the flowers occur long styles with a slightly thicker tip, which together give the impression of a pincushion. It is called Hermanus pincushion in English. It naturally occurs in fynbos in the southern mountains of the Western Cape province of South Africa.

References

  1. Rebelo, A.G.; Mtshali, H.; von Staden, L. (2020). "Leucospermum muirii". IUCN Red List of Threatened Species . 2020: e.T113173192A185574581. doi: 10.2305/IUCN.UK.2020-3.RLTS.T113173192A185574581.en . Retrieved 18 November 2021.
  2. 1 2 3 4 5 Rourke, John Patrick (1970). = 1 Taxonomic Studies on Leucospermum R.Br. (PDF). pp. 77–79.{{cite book}}: Check |url= value (help)
  3. 1 2 3 "Leucospermum muirii". SANBI Threatened Species Programme.
  4. 1 2 "Leucospermum muirii E.Phillips". SANBI.
  5. Johnson, L.A.S.; Briggs, Barbara G. (1975). "On the Proteaceae—the evolution and classification of a southern family". Botanical Journal of the Linnean Society. 70 (2): 106. doi:10.1111/j.1095-8339.1975.tb01644.x.[ permanent dead link ]
  6. "Leucospermum muirii". Operation Wildflower.
  7. "Identifying Pincushions". Protea Atlas Project.