Scolymus maculatus

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Scolymus maculatus
Scolymus maculatus.jpg
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Tribe: Cichorieae
Genus: Scolymus
Species:
S. maculatus
Binomial name
Scolymus maculatus
L.

Scolymus maculatus is a spiny annual plant in the family Asteraceae, native to the Mediterranean region in southern Europe, southwest Asia, and northern Africa, and also the Canary Islands. It has pinnately incised prickly leaves and prickly wings along the stems, both with a white marginal vein. The yellow flowerheads stand solitary or with a few together at the tip to the stems, and subtended by more than five leaflike bracts. The plant is known as scolyme taché in French, cardogna macchiata in Italian, cardo borriquero in Spanish, and escólimo-malhado in Portuguese, חוח עקוד in Hebrew and سنارية حولية in Arabic. In English it is called spotted golden thistle or spotted oyster thistle. [1] [2]

Contents

Description

Scolymus maculatus is a spiny herbaceous annual, biennials or perennials of up to 1½ m high, that contains a milky latex. It has twenty chromosomes (2n=20). [3]

Root, stem and leaves

The stems carry uninterrupted spiny wings along their lengths. The wavy leaves are approximately ovate in shape, mostly 9–14 cm long, with prominent white veins which are pinnately divided, alternately set along the stems, and have a dentate margin tipped with spines and a white vein all around their outline. [4]

Inflorescence, flowers and fruits

detail of a flowerhead, showing the white marginal vein in the bracts PikiWiki Israel 3633 Scolymus Maculatus.jpg
detail of a flowerhead, showing the white marginal vein in the bracts

The flowerheads are seated at the end of the stem or in the limbs of the higher leaves, and are arranged in roundish clusters, which are subtended by more than five leaflike bracts. Each flowerhead is circled by an involucre that consists of many spine-tipped bracts of usually between 11 and 18 mm long, in several rows, the outer papery and shorter than the inner ones, which are leaflike in consistency and have a white papery margin. These surround the common floral base (or receptacle), which is mostly 7–11 mm in diameter conical in shape and is set with ovate papery bracts called chaff or paleae. Inplanted are dorsally compressed cypselas, each enclosed by a palea, the outer rows higher than the inner ones. There are no pappus bristles on top of the cypselas. The yellow, strap-like corolla is usually 17–24 mm long, ends in five teeth, and carries some black hairs on the tube. [4]

Characters common to all Asteraceae

Like in all Asteraceae, the pentameric flowers have anthers that are fused together forming a tube through which the style grows. The style picks up the pollen on hairs along its length and splits into two style branches at its tip. These parts sit on an inferior ovary that grows into an indehiscent fruit in which only one seed develops (a so-called cypsela). All florets are set on a common base (the receptacle), and are surrounded by several rows of bracts, that form an involucre. [4]

Characters common to Cichorieae

Golden thistles are assigned to the Cichorieae tribe that shares anastomosing latex canals in both root, stem and leaves, and has flower heads only consisting of one type of floret. In Scolymus these are ligulate florets, common to the group except for Warionia and Gundelia , which only have disk florets. A unique character setting Scolymus apart from the other Cichorieae are the dorsally compressed cypsellas which are surrounded by scales (or paleae). [4]

Differences between the species

S. maculatus is an annual of up to 1.5 m high, there are more than five leaf-like bracts subtending each cluster of flowerhead, and these bracts are pinnately divided. The yellow florets carry some black hairs. The cypselas do not have pappus at their top (but are encased by the paleae). The spined wings along the stems are uninterrupted. Leaves have a whitish vein along their margin.

S. grandiflorus is an annual or biennial of up to 0.75 m high with one, two or three leaf-like bracts subtending each cluster of flowerheads and these are spiny dentate. The yellow to orange florets do not have black hairs. The cypselas are topped by three to seven bristles of smooth pappus hairs (and are encased by the paleae). The spined wings along the stems are uninterrupted.

S. hispanicus is an annual, biennial or perennial of up to 1.75 m high and it also has one, two or three spiny dentate leaf-like bracts subtending each cluster of flowerheads and the yellow, orange or white florets also lack black hairs. The cypselas however are topped by two to five bristles of scabrous pappus hairs (and are encased by the paleae). In this species the spined wings along the stems are interrupted. [4]

Distribution

The species naturally occurs on the Canary Islands, Madeira and along the Mediterranean, notably in Portugal, Spain (including on the Baleares), France (the coast of the Languedoc-Roussillon region, and the departements Vaucluse, Lot, Bas-Rhin and Somme), Italy (Sicily, Sardinia, Tuscany, Lazio, Campania, Basilicata, Calabria Apulia, Molise and Abruzzo), Malta, Greece, Cyprus, Turkey, Lebanon, Syria, Iraq, Israel, Egypt, Tunesia, Algeria and Morocco. [1] [2] [4] [5]

Ecology

Scolymus maculatus is nitrophilous plant, that prefers deep, rich, but disturbed clayey soils in sunny or lightly shaded positions, such as fallowed or abandoned fields, ditches and roadsides. It generally only occurs below 700 m altitude, and along the coast, where there are less than 15 frost days. In Israel it occurs in woodlands and shrublands, steppes, and desert, but also in the montane vegetation on Mount Hermon. Flowers are present between May and August. The hermaphrodite flowers are pollinated by insects. [2] [6]

Related Research Articles

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

Gundelia is a low to high (20–100 cm) thistle-like perennial herbaceous plant with latex, spiny compound inflorescences, reminiscent of teasles and eryngos, that contain cream, yellow, greenish, pink, purple or redish-purple disk florets. It is assigned to the daisy family. Flowers can be found from February to May. The stems of this plant dry-out when the seeds are ripe and break free from the underground root, and are then blown away like a tumbleweed, thus spreading the seeds effectively over large areas with little standing vegetation. This plant is native to the eastern Mediterranean and the Middle-East. Opinions differ about the number of species in Gundelia. Sometimes the genus is regarded monotypic, Gundelia tournefortii being a species with a large variability, but other authors distinguish up to nine species, differing in floret color and pubescence. Young stems are cooked and eaten in the Middle-East and are said to taste like a combination of artichoke and asparagus. The plant also contains compounds that have been demonstrated to be effective against a range of ailments. A large quantity of pollen assigned to Gundelia has been found on the Shroud of Turin, which may suggest that the crown of thorns was made from Gundelia, but this finding has been contested.

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

Scolymus is a genus of annual, biennial or perennial, herbaceous plants that is assigned to the Daisy family, and can be found in Macaronesia, around the Mediterranean, and in the Middle East. All species are spiny, thistle-like in appearance, with flowerheads that consist of yellow ligulate florets, and canals that contain latex. It is known as سكوليمس (skwlyms) in Arab, scolyme in French, and is sometimes called golden thistle or oyster thistle in English.

<i>Catananche caerulea</i> Species of flowering plant

Catananche caerulea, Cupid's dart, is a greyish green perennial herbaceous plant with a basal leaf rosette and conspicuous blue-purple or sometimes white flowerheads, belonging to the daisy family. It is a popular garden plant and is often used in dried flower arrangements.

<i>Cirsium eriophorum</i> Species of plant

Cirsium eriophorum, the woolly thistle, is a herbaceous biennial species of flowering plant in the genus Cirsium of the daisy family Asteraceae. It is widespread across much of Europe. It is a large biennial plant with sharp spines on the tips of the leaves, and long, woolly hairs on much of the foliage. The flower heads are large and nearly spherical, with spines on the outside and many purple disc florets but no ray florets.

<i>Didelta</i> A plant genus in the Asteraceae from Southern Africa

Didelta is a genus of shrubs of up to 1 or 2 meter high, with two known species in the daisy family. Like in almost all Asteraceae, the individual flowers are 5-merous, small and clustered in typical heads, and are surrounded by an involucre, consisting of in this case two whorls of bracts, which are almost free from each other. The 3–5 outer bracts are protruding and triangular in shape, the inner about twice as many are lance-shaped and ascending. In Didelta, the centre of the head is taken by 3–5 clusters of bisexual yolk yellow disc florets, sometimes divided from each other by male disc florets, and is surrounded by one complete whorl of infertile yolk yellow ray florets. The common base of the flowerhead swells around the developing fruitlets, become woody and breaks into segments when ripe. The fruitlets germinate within this woody encasing. The species of the genus Didelta can be found in Namibia and South Africa. The genus is called salad thistle in English and slaaibos in Afrikaans.

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

Gymnarrhena is a deviant genus of plants in the daisy family, with only one known species, Gymnarrhena micrantha. It is native to North Africa and the Middle East, as far east as Balochistan. Together with the very different Cavea tanguensis it constitutes the tribe Gymnarrheneae, and in the subfamily Gymnarrhenoideae.

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

Hymenonema is a genus of flowering plants in the dandelion family endemic to Greece. On each of the single or few stems, the species have one to three flowerheads consisting of yellow or yolk yellow ligulate florets, scaly pappus, greyish, pinnately segmented leaves in a basal rosette, and few smaller leaves on the 20–70 cm high stems. It contains two species: Hymenonema graecum, that is known from the Cyclades, and Hymenonema laconicum, which occurs in the central and south-eastern Peloponnesos.

Warionia is a genus in the dandelion tribe within the daisy family. The only known species is Warionia saharae, an endemic of Algeria and Morocco, and it is locally known in the Berber language as afessas, abessas or tazart n-îfiss. It is an aromatic, thistle-like shrub of ½–2 m high, that contains a white latex, and has fleshy, pinnately divided, wavy leaves. It is not thorny or prickly. The aggregate flower heads contain yellow disk florets. It flowers from April till June. Because Warionia is deviant in many respects from any other Asteraceae, different scholars have placed it hesitantly in the Cardueae, Gundelieae, Mutisieae, but now genetic analysis positions it as the sister group to all other Cichorieae.

Stifftioideae Subfamily of flowering plants

The Stifftioideae are a subfamily of the Asteraceae, or sunflower family, of flowering plants. It comprises a single tribe, Stifftieae, of ten genera.

<i>Hymenonema laconicum</i> Species of plant in the family Asteraceae

Hymenonema laconicum is a species of herbaceous perennial plant plant in the Asteraceae family. It is small to average height, with a rosette of greyish pinnately segmented leaves, and little branching solid stems carrying one to three heads of orange or yolk yellow ray-flowers, with a purple anther tube, and scaly pappus. The species is an endemic of the central and south-eastern Peloponnesos, and flowers in May and June.

<i>Scolymus grandiflorus</i> Species of flowering plant

Scolymus grandiflorus is a spiny annual or biennial plant in the family Asteraceae, native to the Mediterranean region. With up to 75 cm high stems, it is the smallest of the species of Scolymus. Its stems are lined with uninterrupted spiny wings. It also has the largest flowerheads in the genus, of approximately 5 cm wide. It has yellow, sometimes yolk-yellow ligulate florets. Its vernacular name in Maltese is xewk isfar kbir, meaning "large yellow fin", cardogna maggiore in Italian, scoddi on Sicily, and scolyme à grandes fleurs in French.

Catananche lutea, is a woolly annual plant, assigned to the daisy family, with most leaves in a basal rosette, and some smaller leaves on the stems at the base of the branches. Seated horizontal flowerheads develop early on under the rosette leaves. Later, not or sparingly branching erect stems grow to 8–40 cm high, carrying solitary flowerheads at their tips with a papery involucre whitish to beige, reaching beyond the yellow ligulate florets. Flowers are present between April and June. This plant is unique for the five different types of seed it develops, few larger seeds from the basal flowerheads, which remain in the soil, and smaller seeds from the flowerheads above ground that may be spread by the wind or remain in the flowerhead when it breaks from the dead plant. This phenomenon is known as amphicarpy. The seeds germinate immediately, but in one type, germination is postponed. It naturally occurs around the Mediterranean. Sources in English sometimes refer to this species as yellow succory.

Famatinanthus is a genus in the family Asteraceae that was described in 2014 and has been assigned to its own tribe Famatinantheae and subfamily Famatinanthoideae. It contains only one known species, F. decussatus, a small shrub of ½—1¾ m high that is an endemic of the Andes of north-western Argentina, with small, entire, oppositely set leaves and flowerheads containing about ten cream-colored, ray and disk florets, with backward coiled lobes. It is locally known as sacansa. For more than 100 years, the species was known to science only from the type collection. It was described in 1885 and originally assigned to the genus Aphyllocladus.

<i>Felicia echinata</i> Shrublet in the daisy family from South Africa

Felicia echinata, commonly known as the dune daisy or prickly felicia, is a species of shrub native to South Africa belonging to the daisy family. It grows to 1 m (3.3 ft) high and bears blue-purple flower heads with yellow central discs. In the wild, it flowers April to October.

<i>Oedera capensis</i> Shrublet in the daisy family from South Africa

Oedera capensis is a prickly shrublet belonging to the daisy family. It has stems that branch only at the foot and are densely set over their entire length with narrowly triangular leathery leaves with a sharp tip at approximately right angles to the stem. At their tip are what at first sight appears to be a single flowerhead with yellow ray florets and yellow disc florets. In fact, these are mostly nine densely cropped heads, as is suggested by the nine domes of the "disc" of the composite head, the untidy arrangement of the ray florets, and becomes very clear when cutting through the composite head. It is an endemic of the south of the Western Cape province in South Africa.

<i>Felicia josephinae</i> An annual plant in the daisy family from South Africa

Felicia josephinae is a roughly hairy annual herbaceous plant of 15–20 cm (6–8 in) high, that is assigned to the daisy family. It branches near its base, and has few leaves along its stems. The lower leaves are set oppositely, inverted lance-shaped, relatively large at 3–7 cm long and ⅔–1¼ cm wide, and soon withering, while the higher ones are smaller and relatively narrower. In the axils of the leaves grow flower heads of 7–8 mm wide on stalks of up to 5 cm (2 in) long, topped with an involucre of about 5 mm (0.2 in) high and 4 mm (0.16 in) wide, consisting of eleven to thirteen bracts in two rows with bristles near the tip, eight to nine white or cream-coloured ligulate florets surrounding fourteen or fifteen deep purple disc florets. Flowers can be found in September and October. The species is an endemic species that can only be found in a small area along the west coast of the Western Cape province of South Africa.

<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 daisy family. 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 heterophylla</i> A perennial plant in the daisy family from South Africa

Felicia heterophylla is a roughly hairy annual plant in the daisy family. It has alternate leaves of 1–5 cm long with an entire margin or few inconspicuous teeth. The flower heads are set individually at the tip of its stems, and contain a whorl of purplish blue ray florets around a center of blackish blue disk florets. Flower heads appear in winter and spring. It is called true-blue daisy in English and bloublomastertjie in Afrikaans. It is an endemic species that only occurs in the Western Cape province of South Africa.

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

Felicia macrorrhiza is a small, evergreen shrub in the daisy family. This species grows in the Karoo region of South Africa. It is called Aspoestertjie in Afrikaans.

<i>Felicia</i> (plant) Genus of shrublets, perennials and annuals in the daisy family

Felicia is a genus of small shrubs, perennial or annual herbaceous plants, with 85 known species, that is assigned to the daisy family. Like in almost all Asteraceae, the individual flowers are 5-merous, small and clustered in typical heads, and which are surrounded by an involucre of, in this case between two and four whorls of, bracts. In Felicia, the centre of the head is taken by yellow, seldomly whitish or blackish blue disc florets, and is almost always surrounded by one single whorl of mostly purple, sometimes blue, pink, white or yellow ligulate florets and rarely ligulate florets are absent. These florets sit on a common base and are not individually subtended by a bract. Most species occur in the Cape Floristic Region, which is most probably the area where the genus originates and had most of its development. Some species can be found in the eastern half of Africa up to Sudan and the south-western Arabian peninsula, while on the west coast species can be found from the Cape to Angola and one species having outposts on the Cameroon-Nigeria border and central Nigeria. Some species of Felicia are cultivated as ornamentals and several hybrids have been developed for that purpose.

References

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  2. 1 2 3 "Scolymus maculatus, Spotted Golden Thistle". Flowers in Israel. Retrieved 2016-12-09.
  3. Eshel, Amram; Beeckman, Tom (2013). Plant Roots: The Hidden Half (4 ed.). CRC Press. ISBN   9781439846483 . Retrieved 2016-12-06.
  4. 1 2 3 4 5 6 Váquez, F.M. (2000). "The genus Scolymus Tourn. ex L. (Asteraceae): taxonomy and distribution" (PDF). Anales del Jardín Botánico de Madrid . 58 (1): 83–100. Retrieved 2015-12-05.
  5. "Scolymus maculatus - chorologie départemental". TeleBotanica. Retrieved 2012-12-10.
  6. "Scolymus maculatus L./Cardo perruno, tagarnina". Arba bajo Jarama. Retrieved 2016-12-09.