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Narcissus triandrus

Narcissus triandrus 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 triandrus rather than just read about it. In short: Narcissus triandrus, also known as the Angel's Tears daffodil, is a species of flowering plant within the family Amaryllidaceae. The popular cultivar 'Hawera', belonging to the Triandrus group, has received the Royal Horticultural Society's Award of Garden Merit.

Narcissus triandrus — main illustration
Narcissus triandrus — illustration

Key takeaways

  • Narcissus triandrus 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 triandrus to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Narcissus triandrus from memory before moving on to harder problems.

Reference excerpt

Narcissus triandrus, also known as the Angel's Tears daffodil, is a species of flowering plant within the family Amaryllidaceae. The popular cultivar 'Hawera', belonging to the Triandrus group, has received the Royal Horticultural Society's Award of Garden Merit.

Description Narcissus triandrus is a bulbous perennial plant. The bulbs of this species are small and dark in colour. Bulbs lay dormant in the soil for the majority of the year until emerging in the Spring. A single bulb usually produces two leaves each that can grow to a length of 20 cm (7.9 in) long by 4–5 mm wide. Leaves are keeled, striate on their surface and sometimes coiled at the tip. Stems of the species are 30 cm (12 in) tall, thick, tubular, and almost waxy on their outer side. Stems can hold from one to six cup-shaped flowers, which are milk white or pale yellow in colour.

Reproduction The flower size varies, increasing from southeast to northwest, correlating with plant size, probably reflecting a rainfall gradient from the hot Mediterranean climate of the southeast to the cooler, wetter Atlantic climate found in the northwest. Changes in flower size correlate with pollinator fauna, Anthophora species being dominant in the southern population and the larger-bodied Bombus species in the north. Self-pollination was found to result in significantly lower seed production than in cross-pollination within Narcissus triandrus.

Distribution and habitat Native to France, Spain and Portugal, where it grows in woodlands, scrubland and exposed mountain habitats in acidic soils. It has been observed to grow in scrublands, mesophilic grasslands, sandy soils, including some more rocky areas. In Europe, the plant has been spotted in the Iberian peninsula, the Iberian and Aracena Mountains, as well as the Baetic and Penibaetic mountain systems and the Serra de Monchique.

Cultivation

While not a very popular species of the daffodil, these plants have similar care and blooming needs. They are low maintenance plants that require full sun, or part shade, medium water (meaning that the soil should be watered until damp, then left to dry and once dry, watered lightly again). The species is tolerant of rabbits, deer, and drought. This aversion towards disease and pests is known to be from the plant's high alkaloid and lycorine content. Flowering in late spring, April through May, it is best that these plants are planted above summer blooming buds, yet below early spring bloomers. It is suggested that these plants be potted or placed in soft, well drained ground in late fall. If planted deep enough (two to three times deeper than the bulbs original length) then it should retain its moisture and last through the winter. And, while these flowers do like shady areas, it is better for them to be placed in full sun or in an area that gets sun throughout most of the day, this is because of the flowers of like to point towards and be in the sun's light as much as possible.

Subspecies Source:

Narcissus triandrus subsp. triandrus Narcissus triandrus subsp. lusitanicus Narcissus triandrus subsp. pallidulus

Varieties Source:

Narcissus triandrus var. cernuus Narcissus triandrus var. con-color Naricissus triandrus var. loiseleurii

References

Illustrations

Narcissus triandrus illustration
Narcissus triandrus: N. triandrus 'Thalia', a variety that bears open, nodding flowers
N. triandrus 'Thalia', a variety that bears open, nodding flowers

Worked examples

Example 1 — a first encounter with Narcissus triandrus

Start with the simplest possible case. Write down what Narcissus triandrus 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 triandrus 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 triandrus 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 triandrus

In research
Narcissus triandrus 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 triandrus 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 triandrus 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 Portugal, so understanding it makes those chapters shorter.
In everyday life
Look for Narcissus triandrus 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 triandrus in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Narcissus triandrus 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 Narcissus triandrus out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Narcissus triandrus in simple terms?

Narcissus triandrus, also known as the Angel's Tears daffodil, is a species of flowering plant within the family Amaryllidaceae. The popular cultivar 'Hawera', belonging to the Triandrus group, has received the Royal Horticultural Society's Award of Garden Merit.

Why does Narcissus triandrus 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 triandrus?

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 triandrus.

Tags

  • Botanical taxa named by Carl Linnaeus
  • Flora of France
  • Flora of Portugal
  • Flora of Spain
  • Garden plants of Europe
  • Habitats Directive species
  • Narcissus (plant)
  • Plants described in 1762

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