biology

Narcissus bulbocodium

Narcissus bulbocodium is a biology 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 Narcissus bulbocodium rather than just read about it. In short: Narcissus bulbocodium, the petticoat daffodil or hoop-petticoat daffodil, is a species of flowering plant in the family Amaryllidaceae, native to southern and western France, Portugal, and Spain. Some sources say that the species is also native to Morocco, but this is based on populations formerly thought to be varieties of N. bulbocodium but now regarded as separate species.

Key takeaways

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

Reference excerpt

Narcissus bulbocodium, the petticoat daffodil or hoop-petticoat daffodil, is a species of flowering plant in the family Amaryllidaceae, native to southern and western France, Portugal, and Spain. Some sources say that the species is also native to Morocco, but this is based on populations formerly thought to be varieties of N. bulbocodium but now regarded as separate species.

Description Narcissus bulbocodium is a variable, small, hardy bulbous perennial, growing to 10–15 cm (4–6 in) tall, with grass-like leaves, and deep yellow trumpet-shaped flowers in mid-Spring. The flower is unusual in that the central trumpet (corona) is exceptionally large in relation to the outer section (perianth) consisting of tiny pointed segments. The specific epithet bulbocodium means "woolly bulb". At 12 mm it has the smallest floral diameter amongst Narcissus.

Hybrids Narcissus bulbocodium is a parent of several hybrids, including:

N. × abilioi Fern.Casas (N. bulbocodium × N. jonquilla) N. × brevitubulosus A.Fern. (N. bulbocodium × N. asturiensis) N. × montcaunicus Fern.Casas (N. bulbocodium × N. eugeniae) N. × lopezii Fern.Casas (N. obvallaris × N. bulbocodium) N. × rozeirae Fern.Casas & Pérez-Chisc. (N. bulbocodium × N. pallidulus) N. × barrae Fern.Casas (N. cantabricus 'Redouté' × N. bulbocodium)

Cultivation Narcissus bulbocodium is widely planted in gardens, and can be naturalised in grass. It requires relatively dry conditions during the summer dormant period, so is suitable for planting beneath deciduous trees. Numerous varieties and cultivars exist, including N. bulbocodium subsp. bulbocodium var. conspicuus (pale yellow flowers) and 'Golden Bells', a vigorous cultivar with long-lasting deep yellow flowers. Narcissus bulbocodium has gained the Royal Horticultural Society's Award of Garden Merit.

Gallery

References

Illustrations

Worked examples

Example 1 — a first encounter with Narcissus bulbocodium

Start with the simplest possible case. Write down what Narcissus bulbocodium claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, 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 Narcissus bulbocodium 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 Narcissus bulbocodium 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 Narcissus bulbocodium

In research: Narcissus bulbocodium appears in biology 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 Narcissus bulbocodium 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: Narcissus bulbocodium is common in secondary-school and first-year university syllabi. It links to neighbouring topics Botanical taxa named by Carl Linnaeus, Flora of France, Flora of North Africa, so understanding it makes those chapters shorter.
In everyday life: Look for Narcissus bulbocodium 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 Narcissus bulbocodium in 20 minutes

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

Frequently asked questions

What is Narcissus bulbocodium in simple terms?

Why does Narcissus bulbocodium matter?

Because it connects several biology 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 Narcissus bulbocodium?

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 Narcissus bulbocodium.