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Pilosella aurantiaca

Pilosella aurantiaca is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Pilosella aurantiaca rather than just read about it. In short: Pilosella aurantiaca (fox-and-cubs, orange hawkweed, devil's paintbrush, and historically grim-the-collier) is a perennial flowering plant in the family Asteraceae. It is native to mountainous regions of Europe and has been widely introduced elsewhere, where it is invasive in parts of North America, New Zealand, and Australia.

Pilosella aurantiaca — main illustration
Pilosella aurantiaca — illustration

Key takeaways

  • Pilosella aurantiaca belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Pilosella aurantiaca to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Pilosella aurantiaca from memory before moving on to harder problems.

Reference excerpt

Pilosella aurantiaca (fox-and-cubs, orange hawkweed, devil's paintbrush, and historically grim-the-collier) is a perennial flowering plant in the family Asteraceae. It is native to mountainous regions of Europe and has been widely introduced elsewhere, where it is invasive in parts of North America, New Zealand, and Australia.

Description It is a low-growing plant with shallow fibrous roots and a basal rosette of elliptical to lanceolate leaves 5–20 centimetres (2.0–7.9 in) long and 1–3 centimetres (0.39–1.18 in) broad. All parts of the plant exude a milky juice. The flowering stem is usually leafless or with just one or two small leaves. The stem and leaves are covered with short stiff hairs (trichomes), usually blackish in color. The stems may reach a height of 60 centimetres (24 in) and have 2–25 capitula (flowerheads), each 1–2+1⁄2 cm diameter, bundled together at the end of short pedicels. The flowers are orange, almost red, which is virtually invisible to bees, yet they also reflect ultraviolet light, increasing their conspicuousness to pollinators. The flowers are visited by various insects, including many species of bees, butterflies, pollinating flies. The flowers themselves come in a range of colors from a deep rust-orange to a pure yellow and often show striking gradients of color. In the UK, it flowers in June and July. After flowering, it produces seed heads of the "dandelion clock" type, each individual cypsela (achene-like fruit resembling a seed) being equipped with its own pappus ("parachute") of white or pale brown hairs evolved as a mechanism for wind-dispersal. The plant propagates through its wind-dispersed seeds, and also vegetatively via the stolons and shallow rhizomes in autumn or spring.

Taxonomy The Latin specific epithet aurantiaca means 'orange', referring to the usual colour of the blooms. The common name of fox-and-cubs is due to the appearance of the open flowers (the fox) beside the flower buds (the cubs).

Distribution Pilosella aurantiaca is native to parts of Europe (central, eastern, northern, southeastern and southwestern). It is widely naturalized elsewhere, including other parts of Europe such as Great Britain and Ireland, Central Asia, Canada, many states in the United States, Japan and New South Wales.

Use in horticulture

P. aurantiaca is widely grown as an ornamental plant in gardens for its very decorative flowers. It is often used in wildflower gardens because its bright orange flowers are highly attractive to a wide array of pollinators.

Use in folk medicine Fox and cubs has a long history of use in the folk medicine of Europe, in which it has been used in preparations believed to benefit a variety of diseases, including respiratory infections, digestive problems, and skin conditions. The leaves have also been used to prepare a tisane believed to have tranquilising and sleep-inducing properties. Herbal teas prepared from the leaves and flowers are credited with having diuretic, anti-inflammatory, and antioxidant properties. The plant itself is believed to have some value in the treatment of cancer and has also been employed as a natural remedy for the control of blood sugar levels and the treatment of high blood pressure.

In myth and folklore

Although not native to the British Isles, P. aurantiaca was introduced there at least as early as sixteenth century, as is evidenced by the English common name grim-the-collier, which is that of a folkloric figure of uncertain origin who features in a once-familiar proverb and subsequently in no fewer than three early modern English plays. In one of these he is actually named in the title: "Grim the Collier of Croydon; or, The Devil and his Dame: with the Devil and Saint Dunston". The name Grim was originally a by-name of the Germanic deity Odin/Woden, which came later to be associated, in mediaeval mystery plays with sooty devils blackened by the fires of hell. The term collier can designate not only a coal miner or coal merchant but also a charcoal-burner or charcoal merchant and the town of Croydon in Surrey was formerly noted for the number of its charcoal-burners. The reason for the application of the name of this folk villain to Pilosella aurantiaca is that it has a sooty appearance due the distinctive black hairs in which the flower heads are covered. The proverb linking colliers to the Devil and his fiery abode runs thus: 'like will to like, quoth the devil to the collier' i.e. the Devil and the collier are natural companions thanks to their shared black and sooty appearance. This hellish association between, on the one hand the flower with its black hairs and, on the other, the sooty Devil and his equally sooty friend the coal miner is reinforced by the fiery orange colouration of the flowers, reminiscent of both the flames of a coal fire and the unquenchable flames of hellfire – as further recognised in the plant's common names red devil and devil’s paintbrush. One website claims that the plant features in Celtic mythology, being believed to possess apotropaic powers employed in magical practices intended to bring good luck and ward off evil spirits. It claims further that in certain (unspecified) cultures, it was planted deliberately around homes and gardens to keep them safe from harm. Kew's definitive Plants of the World Online website states that the plant is not native to Ireland or the U.K. an aspect of its distribution which rules out its featuring in ancient insular Celtic belief but not its playing a role in the mythology of Brittany (P. aurantiaca is native to much of continental Europe – including France).

Invasive weed

… excerpt ends here. Continue reading the full article.

Illustrations

Pilosella aurantiaca illustration
Pilosella aurantiaca: Showing dense habit and flowering
Showing dense habit and flowering
Pilosella aurantiaca: The fiery orange inflorescence of P. aurantiaca, showing to advantage its black hairs reminiscent of coal (or charcoal) dust
The fiery orange inflorescence of P. aurantiaca, showing to advantage its black hairs reminiscent of coal (or charcoal) dust
Pilosella aurantiaca: Uprooted rosette, inverted to show purplish, creeping stolons by which the plant can spread rapidly to form large clumps
Uprooted rosette, inverted to show purplish, creeping stolons by which the plant can spread rapidly to form large clumps

Worked examples

Example 1 — a first encounter with Pilosella aurantiaca

Start with the simplest possible case. Write down what Pilosella aurantiaca claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Pilosella aurantiaca before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Pilosella aurantiaca ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Pilosella aurantiaca

In research
Pilosella aurantiaca appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Pilosella aurantiaca in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Pilosella aurantiaca is common in secondary-school and first-year university syllabi. It links to neighbouring topics Alpine flora, Botanical taxa named by Carl Linnaeus, Flora of Eastern Europe, so understanding it makes those chapters shorter.
In everyday life
Look for Pilosella aurantiaca outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Pilosella aurantiaca in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Pilosella aurantiaca means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Pilosella aurantiaca out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Pilosella aurantiaca in simple terms?

Pilosella aurantiaca (fox-and-cubs, orange hawkweed, devil's paintbrush, and historically grim-the-collier) is a perennial flowering plant in the family Asteraceae. It is native to mountainous regions of Europe and has been widely introduced elsewhere, where it is invasive in parts of North America…

Why does Pilosella aurantiaca matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Pilosella aurantiaca?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Pilosella aurantiaca.

Tags

  • Alpine flora
  • Botanical taxa named by Carl Linnaeus
  • Flora of Eastern Europe
  • Flora of Middle Europe
  • Flora of Northern Europe
  • Flora of Southeastern Europe
  • Flora of Southwestern Europe
  • Pilosella
  • Plants described in 1753

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