science

Hemerocallis citrina

Hemerocallis citrina 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 Hemerocallis citrina rather than just read about it. In short: Hemerocallis citrina, commonly known as citron daylily and long yellow daylily, is a species of herbaceous perennial plant in the family Asphodelaceae. Description Hemerocallis citrina can reach a height of 90–120 centimetres (35–47 in).

Key takeaways

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

Reference excerpt

Hemerocallis citrina, commonly known as citron daylily and long yellow daylily, is a species of herbaceous perennial plant in the family Asphodelaceae.

Description Hemerocallis citrina can reach a height of 90–120 centimetres (35–47 in). It has bright green, linear arching leaves about 40 cm long. Flowers are lemon yellow, trumpet-shaped, showy and very fragrant, about 15 centimetres (5.9 in) in diameter. They bloom from June to July. Long yellow day lily is cultivated in Asia for its edible flowers.

Distribution and habitat This species is native to East Asia and China. It grows in forest margins, grassy fields and slopes, at an elevation of 0–2,000 metres (0–6,562 ft) above sea level.

Culinary uses The tubers, inflorescences, buds and flowers can all be cooked and eaten. Dried or fresh flowers, sometimes called "gum jum" or "golden needles" (Chinese: 金針; pinyin: jīnzhēn; Jyutping: gam1 zam1) or as huánghuācài (黃花菜, lit. 'yellow flower vegetable') are used in Chinese cuisine for dishes including hot and sour soup, daylily soup (金針花湯), Buddha's delight, and moo shu pork. In Burmese, dried daylily flowers are called pangyauk (ပန်းခြောက်; lit. 'dried flower'), and feature in several soups and Burmese salads, including kya zan hinga.

Toxicity Consuming its raw or undercooked non-dried flowers may cause unwellness. Symptoms include vomiting, abdominal pain and diarrhea.

References

External links

Missouri Botanical Garden Archived 2010-08-09 at the Wayback Machine Tropicos The Plant List "Hemerocallis citrina". Plants for a Future. Flora of China Editorial Committee. 2000. Flora of China (Flagellariaceae through Marantaceae). 24: 1–431. In C. Y. Wu, P. H. Raven & D. Y. Hong Fl. China. Science Press & Missouri Botanical Garden Press, Beijing & St. Louis.

Illustrations

Worked examples

Example 1 — a first encounter with Hemerocallis citrina

Start with the simplest possible case. Write down what Hemerocallis citrina 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 Hemerocallis citrina 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 Hemerocallis citrina 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 Hemerocallis citrina

In research: Hemerocallis citrina 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 Hemerocallis citrina 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: Hemerocallis citrina is common in secondary-school and first-year university syllabi. It links to neighbouring topics Chinese condiments, Chinese soups, Edible plants, so understanding it makes those chapters shorter.
In everyday life: Look for Hemerocallis citrina 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 Hemerocallis citrina in 20 minutes

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

Frequently asked questions

What is Hemerocallis citrina in simple terms?

Hemerocallis citrina, commonly known as citron daylily and long yellow daylily, is a species of herbaceous perennial plant in the family Asphodelaceae. Description Hemerocallis citrina can reach a height of 90–120 centimetres (35–47 in).

Why does Hemerocallis citrina 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 Hemerocallis citrina?

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 Hemerocallis citrina.