science

Zephyrantheae

Zephyrantheae 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 Zephyrantheae rather than just read about it. In short: Zephyrantheae Salisb. is a now obsolete tribe within the American clade of family Amaryllidaceae (subfamily Amaryllidoideae), containing five genera (Habranthus, Pyrolirion, Rhodophiala, Sprekelia, Zephyranthes). Description corona absent, stem leafless, ovules many, perianth tube present, flowers solitary or paired.

Key takeaways

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

Reference excerpt

Zephyrantheae Salisb. is a now obsolete tribe within the American clade of family Amaryllidaceae (subfamily Amaryllidoideae), containing five genera (Habranthus, Pyrolirion, Rhodophiala, Sprekelia, Zephyranthes).

Description corona absent, stem leafless, ovules many, perianth tube present, flowers solitary or paired.

Taxonomy Richard Anthony Salisbury in his original description in 1866, defined the Zephyrantheae as an 'Order' with two sections and a number of subgroups, such as Omphalissa. The composition has varied, given the considerable rearrangements of the Amaryllidaceae that have taken place. For instance Hickey and Clive (1997) describe the Zephyrantheae as being one of ten tribes by which the Amaryllidaceae are divided, allocating Zephyranthes and Sternbergia to this tribe, while Traub (1952) included Habranthus. Other genera that have been placed in this tribe include Cooperia, Haylockia, Apodolirion, and Gethyllis. In his 1963 monograph on Amaryllidaceae, Traub lists six species, Rhodophiala, Haylockia, Pyrolirion, Zephyranthes, Habranthus and Sprekelia. Meerow et al. (1999) provides an account (Table 1) of the subsequent rearrangement of Traub's genera, and of the modern molecular based phylogeny (see also Taxonomy of Amaryllidoideae).

References

Bibliography

Worked examples

Example 1 — a first encounter with Zephyrantheae

Start with the simplest possible case. Write down what Zephyrantheae 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 Zephyrantheae 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 Zephyrantheae 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 Zephyrantheae

In research: Zephyrantheae 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 Zephyrantheae 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: Zephyrantheae is common in secondary-school and first-year university syllabi. It links to neighbouring topics Amaryllidaceae stubs, Amaryllidoideae, Historically recognized angiosperm taxa, so understanding it makes those chapters shorter.
In everyday life: Look for Zephyrantheae 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 Zephyrantheae in 20 minutes

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

Frequently asked questions

What is Zephyrantheae in simple terms?

Why does Zephyrantheae 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 Zephyrantheae?

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 Zephyrantheae.