science

Nymphaea × laydekeri

Nymphaea × laydekeri 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 Nymphaea × laydekeri rather than just read about it. In short: Nymphaea × laydekeri is an artificial waterlily hybrid of Nymphaea alba, Nymphaea tetragona, and possibly Nymphaea mexicana, which has been naturalised in Sweden and the United Kingdom. Description Vegetative characteristics Nymphaea × laydekeri is an aquatic, perennial, rhizomatous herb with branched or unbranched rhizomes.

Key takeaways

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

Reference excerpt

Nymphaea × laydekeri is an artificial waterlily hybrid of Nymphaea alba, Nymphaea tetragona, and possibly Nymphaea mexicana, which has been naturalised in Sweden and the United Kingdom.

Description

Vegetative characteristics Nymphaea × laydekeri is an aquatic, perennial, rhizomatous herb with branched or unbranched rhizomes. Roots emerge from the rhizome at the leaf bases. The small, green, circular, 22 cm long, and 19 cm wide wide leaves are mottled with brown colouration but such colouration may be absent, as the colour may fade to green as the leaf ages.

Generative characteristics The small, fragrant, diurnal, pink or red up to 10 cm wide flower has a square receptacle with a recession around the peduncle. The flower has 20 petals. The stamens are yellow to orange. It is sterile. Flowering occurs from June to September.

Taxonomy It was described by Maurice de Vilmorin in 1891. The taxon authority appears to be disputed. Some sources list Maurice de Vilmorin, while others list Joseph Bory Latour-Marliac, or Édouard-François André as the taxon author. In the latter case, the name is published by André but attributed to previous work by Latour-Marliac.

Etymology The hybrid name laydekeri refers to Maurice Laydeker, the son in law of Joseph Bory Latour-Marliac.

Hybridisation It is a hybrid of Nymphaea alba, Nymphaea tetragona and possibly Nymphaea mexicana.

Distribution It has been naturalised in Sweden and the United Kingdom. In the UK, it has been widely introduced to old gravel pits, reservoirs, ornamental ponds, and lakes.

Cultivation It is cultivated in small ponds, in very shallow, or in deep water. It is susceptible to Phytophthora rot.

References

Illustrations

Worked examples

Example 1 — a first encounter with Nymphaea × laydekeri

Start with the simplest possible case. Write down what Nymphaea × laydekeri 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 Nymphaea × laydekeri 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 Nymphaea × laydekeri 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 Nymphaea × laydekeri

In research: Nymphaea × laydekeri 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 Nymphaea × laydekeri 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: Nymphaea × laydekeri is common in secondary-school and first-year university syllabi. It links to neighbouring topics Interspecific plant hybrids, Nymphaea, Plants described in 1891, so understanding it makes those chapters shorter.
In everyday life: Look for Nymphaea × laydekeri 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 Nymphaea × laydekeri in 20 minutes

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

Frequently asked questions

What is Nymphaea × laydekeri in simple terms?

Nymphaea × laydekeri is an artificial waterlily hybrid of Nymphaea alba, Nymphaea tetragona, and possibly Nymphaea mexicana, which has been naturalised in Sweden and the United Kingdom. Description Vegetative characteristics Nymphaea × laydekeri is an aquatic, perennial, rhizomatous herb with branc…

Why does Nymphaea × laydekeri 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 Nymphaea × laydekeri?

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 Nymphaea × laydekeri.