Romulea monadelpha

Last updated

Romulea monadelpha
Romulea monadelpha Hantham 02.jpg
Romulea monadelpha Hantham 07.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Iridaceae
Genus: Romulea
Species:
R. monadelpha
Binomial name
Romulea monadelpha
Synonyms
  • Trichonema monadelphum

Romulea monadelpha is a herbaceous perennial geophyte in the family Iridaceae native to South Africa. It has a small corm in the soil, a few thread-like leaves, and trimerous dark red flowers with elaborate markings on the inside near the bottom of the flower. It is called karoo satynblom in Afrikaans.

Contents

Description

Romulea monadelpha is a low geophyte of 15–30 cm (5.9–11.8 in) high, with a subterranean stem that grows from a corm with a rounded base, which has a tunic with curved acuminate teeth. Its three to five thread-like leaves grow directly out of the soil and are 1–2 mm (0.039–0.079 in) in diameter, and have four grooves along their lengths. Its flowers sit individually at the tip of a flower stalk (or pedicel) and are subtended by two bracts that both mostly have brown papery margins. The outer bract usually has one keel on the upper side and a narrow papery margin, the inner bract has two keels with a wider papery margin. The trimerous flowers are without scent, burgundy red with elaborately colored blotches with black and cream in the cup, but the population around the Gannaga Pass population has salmon colored flowers and large black and light grey markings. The six tepals are oval and may be slightly indented at the tip, 2½–4 cm (1–1.6 in) long. The three filaments are oblong in shape and are firmly pressed together or even fused to form a column of 3–4 mm (0.12–0.16 in) long, mostly without hairs and topped by 1–1½ cm long anthers. When the fruit is ripe, the flower stalk is curved. The flowers of this species can be found in August and September. [3]

Romulea monadelpha has short, oblong, black filaments that are pressed together or fused, while R. sabulosa has slender, tapering, mostly pale green filaments. The flower stalk of R. monadelpha is stout and has one flattened side while in R. sabulosa the stalk is slender, more or less circular in cross section does not curve when the fruit is ripe. The species occur in the same area near Nieuwoudtville, but have a different habitat: R. monadelpha grows on heavy dolerite clay while R. sabulosa occurs only on a light sandy clay known as tillite. [3] [4]

Taxonomy

This species was first described by the English botanist Robert Sweet in 1830 as Trichonema monadelphum. In 1892, John Gilbert Baker assigned the species to Romulea, creating the new combination Romulea monadelpha. [5] R. monodelpha is the type species of both the subgenus Spalanthus and the section Spalanthus. [3]

Habitat and ecology

Flower visited by the monkey beetle Clania glenlyonensis Romulea monadelpha Hantham 03.jpg
Flower visited by the monkey beetle Clania glenlyonensis

Romulea monadelpha exclusively grows on dolerite clay in the western Karoo near the escarpments. [3] It is only known to be pollinated by the monkey beetle Clania glenlyonensis. [6]

Distribution

An endemic of the Northern Cape province of South Africa, R. monadelpha occurs along the Bokkeveld and Roggeveld escarpments from near Nieuwoudtville southwards as far as the top of the Gannaga Pass near Middelpos in the south. [3]

Related Research Articles

<span class="mw-page-title-main">Iridaceae</span> Family of flowering plants comprising irises, gladioli, and crocuses

Iridaceae is a family of plants in order Asparagales, taking its name from the irises. It has a nearly global distribution, with 69 accepted genera with a total of c. 2500 species. It includes a number of economically important cultivated plants, such as species of Freesia, Gladiolus, and Crocus, as well as the crop saffron.

<i>Babiana</i> Genus of flowering plants

Babiana is a genus of geophytes in the family Iridaceae with 93 recognized species as of March 2022. The leaves consist of a stalk and a blade that are at an angle to each other. The leaf blades are entire, laterally flattened and pleated, and often hairy. Each individual flower is subtended by two hairy or smooth bracts that are green in most species. The outer bract is often the largest of the two. In most species the bracts have a dry, brown tip, but in a few species it is entirely green or entirely dry when flowering or the outer bract is translucent and has a papery texture. The inner bract is forked or split all the way to its base. Each flower is without a pedicel, with six tepals that are merged at their base into a tube and form a perianth that is mirror-symmetrical in most species, with three anthers implanted where the perianth tube widens and that are, in almost every species, clustered at one side of the style. The style has three branches that widen towards the tip and the ovary is inferior. Flowers occur in almost every conceivable colour, many have markings on some of the tepals, and few star-symmetrical flowers have a centre that strongly contrasts with the free part of the perianth. The majority of these species are endemic to the west and southwest of South Africa, and southwestern Namibia, but one species occurs elsewhere in Namibia and South Africa and another species can be found in Botswana, Namibia, South Africa, Zambia and Zimbabwe. The genus name is derived from the Dutch word baviaan, referring to the Chacma baboon, Papio ursinus, that consumes the corms of plants in the genus. The genus is called bobbejaantjie in Afrikaans, meaning small baboon.

<i>Romulea</i> Genus of flowering plants

Romulea is a genus of flowering plants in the family Iridaceae, first described as a genus in 1772. It is distributed in Europe, the Mediterranean, the Arabian Peninsula, and Africa.

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

Crocoideae is one of the major subfamilies in the family Iridaceae.

<i>Ixia monadelpha</i> South African geophyte

Ixia monadelpha, also known as the pied kalossie or bontkalossie, is an endangered species of geophyte found in wet sandy flats in the southwestern Cape of South Africa.

<i>Geissorhiza aspera</i> South African geophyte

Geissorhiza aspera, also known as the blue satin flower or blou sysie, is a geophyte from South Africa.

<i>Romulea sabulosa</i> Species of flowering plant

Romulea sabulosa is a perennial geophyte that is assigned to the family Iridaceae. It has a few grooved thread-like leaves, and relatively large burgundy red trimerous flowers, reminiscent of crocus flowers, with yellow to light greenish with black markings and stamens with light green free filaments. It only occurs on sandy clay on renosterveld west of Nieuwoudtville in the Northern Cape province South Africa. It is called satynblom in Afrikaans.

<i>Romulea tortuosa</i> Species of flowering plant

Romulea tortuosa is a herbaceous perennial geophyte in the family Iridaceae native to South Africa. It has a small corm in the soil, a few prostrate coiling leaves, and fragrant, trimerous yellow flowers, sometimes with six brown blotches on the inside near the bottom of the flower.

<i>Romulea toximontana</i> Species of flowering plant

Romulea toximontana is low a herbaceous perennial geophyte in the family Iridaceae native to South Africa. It has a small corm in the soil, several linear leaves, white trimerous flowers, yolk-yellow near the centre and with a purple wash on the outside. The 1997 IUCN Red List of Threatened Plants lists this species as rare.

<i>Babiana bainesii</i> Species of flowering plant

Babiana bainesii is a species of geophyte of 15–25 cm (5.9–9.8 in) high that is assigned to the family Iridaceae. It sometimes grows in tufts. The approximately upright leaf blades appear directly from the ground, are narrow, sword- to line-shaped and have a left and right surface, rather than an upper and lower surface, and far exceed the flowers in length. The leaf blades are pleated. The inflorescence stem is fully underground and often branched. It contains two to eight blue, violet or mauve mirror-symmetrical flowers comprising six tepals. B. bainesii has a wide distribution and occurs in Botswana, Namibia, South Africa, southernmost Zambia and Zimbabwe.

<i>Babiana villosa</i> Species of flowering plant

Babiana villosa is a species of geophyte of 10–20 cm (3.9–7.9 in) high that is assigned to the family Iridaceae. It has mauve-pink, purple or scarlet star-symmetrical wide chalice-shaped flowers with narrow tube, large, blackish or dark purple anthers, and velvety hairy, lance-shaped, laterally compressed leaves, set in a fan. Flowers occur during August and September. It grows between Malmesbury and Wellington in the Western Cape province of South Africa. It is commonly called red babiana in English and rooibobbejaantjie in Afrikaans.

<i>Babiana hirsuta</i> Species of flowering plant

Babiana hirsuta is a species of geophyte of 40–70 cm (16–28 in) high that is assigned to the family Iridaceae. It has many scarlet mirror-symmetrical flowers in a branched inflorescence with several short ascending branches. The flower has a narrow tube, and three large, blackish or dark purple anthers that extend beyond the dorsal tepal. The leaves are velvety hairy, lance-shaped, laterally compressed and set in a fan. It is an endemic species of South Africa that can be found along the west coast of the Northern and Western Cape provinces as far south as Saldanha. It is called red babiana in English, but that name is also applied to Babiana villosa, and strandlelie, sandlelie and rooihanekam in Afrikaans. Until 2008, the strandlelie was known as Babiana thunbergii.

<i>Babiana tubiflora</i> Species of flowering plant

Babiana tubiflora is a species of geophyte of 7–15 cm (2.8–5.9 in) high that is assigned to the family Iridaceae. It has whitish mirror-symmetrical flowers with a long narrow tube that split into six tepal lobes, have three stamens, and line- to lance-shaped, laterally compressed leaves. It is an endemic species of South Africa that can be found along the west and south coast of the Western Cape province. It flowers from August to early October.

<i>Babiana sambucina</i> Species of flowering plant

Babiana sambucina is a species of geophyte of 8–30 cm (3.1–11.8 in) high that is assigned to the family Iridaceae. It has dense spikes of blue to violet-coloured, often fragrant flowers. There are two subspecies, B. sambucina subsp. longibracteata is restricted to a small area in the Northern Cape, B. sambucina subsp. sambucina grows in the Western Cape and Eastern Cape provinces of South Africa. Flowers are present in August and September.

<i>Babiana rubrocyanea</i> Species of flowering plant

Babiana rubrocyanea is a perennial geophyte of 5–15 cm (2.0–5.9 in) high, with entire, lance-shaped, hairy, pleated leaves and flowers that have a narrowly funnel-shaped tube at their base and six free tepal lobes at the top that form a wide cup that is purplish blue with a sharply defined carmine red centre. It can be found in a small area of the Western Cape province of South Africa. Flowers can be found from August to the middle of September. It is called blue-and-red babiana in English and rooibloubobbejaantjie in Afrikaans.

<i>Babiana brachystachys</i> Species of flowering plant

Babiana brachystachys is a species of geophyte of 20–30 cm (7.9–11.8 in) high that is assigned to the family Iridaceae. It has cream or pale pink, only slightly mirror-symmetrical flowers that are pink on the reverse with a long narrow tube that splits into six tepal lobes, three stamens, a style that divides in three branches opposite the tip of the anthers and line-shaped leaves that are circular in cross section. It is an endemic species of South Africa that can be found on sandy hills and inland dunes in the Northern Cape province. It flowers in September and October.

<i>Babiana scabrifolia</i> Species of flowering plant

Babiana scabrifolia is a perennial plant of 5–15 cm (2.0–5.9 in) high that annually forms leaves and flowers from an underground corm and is assigned to the Iris family. It produces relatively large, pale lilac or blue flowers slightly above the soil, and soft, lightly pleated leaves that reach beyond the flowers. These leaves are lance-shaped to oblong in adults, but line-shaped and twisted in non-flowering specimens. Flowering occurs from June to August. The species can be found in the Western Cape province of South Africa.

<i>Babiana cinnamomea</i> Species of flowering plant

Babiana cinnamomea is a perennial plant of about 4–6 cm (1.6–2.4 in) high that annually forms leaves and flowers from an underground corm that is assigned to the iris family. It has inconspicuous pale greenish yellow flowers and broad, hairless, pleated leaves with undulating margins. Flowers may be found in May and June. It occurs in the very north of the Western Cape province of South Africa.

<i>Babiana mucronata</i> Species of flowering plant

Babiana mucronata is a perennial plant species that grows to about 5–18 cm (2.0–7.1 in) high and annually forms leaves and flowers from an underground corm. It is assigned to the iris family. It has a simple or branched, more or less upright spike of 3-12 dark to pale violet-blue, mirror-symmetrical flowers. Each flower consists of a perianth that is merged below into a funnel-shaped tube of 10–25 mm (0.39–0.98 in) long but splits into six unequal tepals. Three stamens are curved, crowded near the upper lip, and carry pale violet anthers. Flowers may be found between late July and September.

<i>Romulea hirsuta</i> South African plant species

Romulea hirsuta is a geophyte from South Africa. It has pink flowers with dark marks at the edges of the yellow center.

References

  1. "Romulea monadelpha (Sweet ex Steud.) Baker". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved July 28, 2020.
  2. "Romulea monadelpha (Sweet ex Steud.) Baker". World Flora Online. The World Flora Online Consortium. n.d. Retrieved July 18, 2020.
  3. 1 2 3 4 5 Manning, J.C.; Goldblatt, P. (2001). "A synoptic review of Romulea (Iridaceae: Crocoideae) in sub-Saharan Africa, the Arabian Peninsula and Socotra including new species, biological notes, and a new infrageneric classification". Adansonia . 3. 23 (1): 59–108.
  4. "Hantham Virtual Tour". SANBI.
  5. "Romulea monadelpha". The Plantlist.
  6. Goldblatt, Peter; Bernhardt, Peter; Manning, John (2002). "Floral biology of Romulea (Iridaceae: Crocoideae): a progression from a generalist to a specialist pollination system" (PDF). Adansonia . 3. 24 (2): 243–262.