Gazania rigida

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Gazania rigida
Gazania rigida 1DS-II 2-2436.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Gazania
Species:
G. rigida
Binomial name
Gazania rigida
(Burm.f.) Roessler

Gazania rigida, the "Karoo Gazania", is a species of flower native to the Western Cape and Northern Cape Provinces of South Africa. [1]

Description

Gazania rigida in habitat near Worcester, South Africa. 1 Gazania rigida - Worcester RSA.jpg
Gazania rigida in habitat near Worcester, South Africa.

The flowers vary in colour from yellow to reddish-orange, often with brown-to-black patches at the petal bases. They are born on long, setose scapes. [2]

The involucre is hairy (setose), obtusely bell-shaped (campanulate) and 8-10mm wide. In addition to a few irregularly-placed, ciliate parietal bracts, the involucre also has at its apex two or three rows of terminal bracts.

The linear-lanceolate leaves are usually pinnate with linear-to-elliptic lobes, but can sometimes also be simple. The upper leaf-surface is usually spinescent-to-rough, but can sometimes be smooth. Like many Gazania species, the leaf undersides are tomentose, and the lower leaf margins are spinescent-to-ciliate. (In contrast, the leaves of Gazania serrata are sticky and have more clearly serrated margins). [3]

Gazania rigida is very similar to a number of other Gazania species, including Gazania serrata , Gazania krebsiana , Gazania pectinata and Gazania linearis among others. Species boundaries between these are not clear, and they are frequently confused in practice. [4]

Related Research Articles

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<i>Gazania linearis</i> Species of flowering plant

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<i>Phaneroglossa</i> Plant from the daisy family from South Africa

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<i>Gorteria</i> Genus of plants

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<i>Gazania krebsiana</i> Species of flowering plant

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<i>Berkheya carlinopsis</i> Species of flowering plant

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<i>Mairia crenata</i> Perennial plant in the daisy family from South Africa

Mairia crenata is a perennial herbaceous plant of mostly 2–15 cm (1–6 in) high that is assigned to the family Asteraceae. It has a woody rootstock of up to 5 cm (2 in) long, from which brown, fleshy roots develop. The five to eighteen, hard and leathery, spoon-shaped leaves are in one to three rosettes, have a distinct main vein, blunt or pointy tip, often dark red or blackish margins with rounded teeth and a ½–2 cm (0.2–0.8 in) long stalk-like foot, often initially somewhat woolly hairy, on particularly the lower surface and the main vein, but this is easily rubbed off the shiny surfaces. Each rosette produces mostly one, sometimes up to four, mostly rusty or whitish woolly hairy, brown or dark red inflorescence stalks, usually 1½–15 cm long, each with two to eight, initially woolly, line-shaped to oval bracts, the lowest up to 3 cm (1.2 in), decreasing size further up, and carrying mostly one, rarely up to three flower heads. The flower heads have a bell-shaped involucre with about 40 bracts, sixteen to thirty three violet to white ray florets of about 1¼–1⅞ cm long, and many yellow disc florets. The species flowers anywhere between February and December but only after a fire has destroyed the overhead biomass or serious disturbance. It is an endemic species that is restricted to the Eastern Cape and Western Cape provinces of South Africa.

<i>Felicia canaliculata</i> A shrublet in the daisy family from South Africa

Felicia canaliculata is a grayish green shrublet in the family Asteraceae that grows up to 40 cm (16 in) in height. It has narrow, awl-shaped leaves, relatively large flower heads with approximately a dozen light purple to white ray florets encircling many yellow disc florets. It can only be found in the Western Cape province of South Africa.

<i>Felicia macrorrhiza</i> A shrublet in the daisy family from South Africa

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<i>Felicia dregei</i> A shrublet in the daisy family from South Africa

Felicia dregei is an evergreen, glandular shrub of up to 112 m (5 ft) high, that is assigned to the family Asteraceae. It has flat, finely felty, grayish green, narrowly elliptic to lance-shaped leaves of up to 4 cm long and 8 mm wide, with an entire margin or here and there with up to ten teeth. The flower heads have about ten violet ray florets, encircling many yellow disc florets. This species grows in the Northern Cape and Western Cape provinces of South Africa.

<i>Felicia amoena</i> A perennial or biennial plant in the daisy family from South Africa

Felicia amoena is a variably hairy, sometimes glandular, biennial or perennial plant, of about 25 cm (10 in) high, that is assigned to the family Asteraceae. It is somewhat woody at its base, roots at the nodes if these contact the soil, and has ascending branches. The leaves are oppositely arranged along the stems at and just above a branching fork, further up the leaves alternate. The flower heads sit individually on up to 12 cm long stalks. They are 2–3 cm in diameter and consist of about twelve to twenty five heavenly blue ray florets that surround many yellow disc florets. Three subspecies have been recognised, that differ in width of the leaves and the involucral bracts, the size of the heads and number of ray florets and in having glandular hairs. These can be found in coastal sands and inland areas in the Western Cape and Eastern Cape provinces of South Africa. Flower heads can be found from June till October.

<i>Mairia petiolata</i> Perennial plant in the daisy family from South Africa

Mairia petiolata is a tufted, variably hairy, perennial plant of up to 15 cm (6 in) assigned to the family Asteraceae. Its leaves are in a ground rosette, and have a stalk of mostly 2–5 cm long and an inverted egg-shaped to elliptic, 612–9 cm (2.6–4.6 in) long and 2–3 cm wide leaf blade, with a toothed margin. It mostly has two flower heads at the tip of the branches of each erect, dark reddish brown scape. The flower heads have a bell- to cup-shaped involucre that consists of 20–24, purplish, overlapping bracts in 3–4 whorls. These protect 12–16 pink, ray florets, surrounding many yellow disc florets. This species was only seen flowering once, in December. It is known from one location in the Langeberg, Western Cape province of South Africa.

<i>Gazania lichtensteinii</i> Species of plant

Gazania lichtensteinii is a species of flowering plant in the family Asteraceae, native to South Africa and Namibia. On the SANBI Red List, it is listed as "safe".

<i>Felicia tenella</i> A annual or biennial plant in the daisy family from South Africa

Felicia tenella is an annual, sometimes biennial, herbaceous plant that may be slightly woody at its base, of 5–70 cm tall, that is assigned to the family Asteraceae. The species is very variable in size and hairiness. Its branches may be erect or ascending, and the leaves are narrowly line-shaped, 2–5 cm long and about 1 mm (0.04 in) wide. The leaves have a callous tip, lack visible nerves, and are mostly rigidly ciliate. The flower heads sit individually at the tip of stalks, have an involucre of three whorls of bracts, and about thirty light blue ray florets surrounding many yellow disc florets. Four subspecies are recognised. The species naturally occurs in the Northern Cape and Western Cape provinces of South Africa.

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

Protea pendula, also known as the nodding sugarbush or arid sugarbush, is a flowering plant of the genus Protea, in the family Proteaceae, which is only found growing in the wild in the Cape Region of South Africa. In the Afrikaans language it is known as knikkopsuikerbossie or ondersteboknopprotea.

<i>Gazania heterochaeta</i> Species of plant

Gazania heterochaeta is a species of flowering plant in the family Asteraceae, native to South Africa and Namibia.

<i>Gazania ciliaris</i> Species of plant

Gazania ciliaris is a species of flowering plant in the family Asteraceae, native predominantly to the Western Cape province, South Africa, where it occurs from Vanrhynsdorp to the Eastern Cape near Joubertina.

<i>Gazania pectinata</i> Species of plant

Gazania pectinata, the cockscomb Gazania, is a species of flowering plant in the family Asteraceae, native to the lower-lying regions and coastal plains of the Western Cape Province, South Africa.

<i>Gazania serrata</i> Species of plant

Gazania serrata is a species of flowering plant in the family Asteraceae, native to the Northern Cape and Western Cape provinces, South Africa.

Gazania maritima is a species of flowering plant in the family Asteraceae, native to the Western Cape province, South Africa.

References

  1. "Red List Entry". SANBI.
  2. "PlantzAfrica Entry". SANBI.
  3. Magee, A.R., Boatwright, J.S. & Mucina, L. (2011). Gazania lanata and G. splendidissima: Two new species of Asteraceae (tribe Arctotideae) from the Greater Capensis, with an updated key for the genus. South African Journal of Botany 77(1):86-93.
  4. Mucina, L., Howis, S. & Barker, N. (2009). Globally grown, but poorly known: Species limits and biogeography of Gazania Gaertn. (Asteraceae) inferred from chloroplast and nuclear DNA sequence data. Taxon 58:871-882. 10.1002/tax.583015. p.879