biology

Gentianella amarella

Gentianella amarella 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 Gentianella amarella rather than just read about it. In short: Gentianella amarella, the autumn gentian, autumn dwarf gentian, or autumn felwort, is a short biennial plant flowering plant in the gentian family, Gentianaceae. It is found throughout Northern Europe, the western and northern United States, and Canada.

Key takeaways

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

Reference excerpt

Gentianella amarella, the autumn gentian, autumn dwarf gentian, or autumn felwort, is a short biennial plant flowering plant in the gentian family, Gentianaceae. It is found throughout Northern Europe, the western and northern United States, and Canada.

Description Gentianella amarella the autumn gentian, autumn dwarf gentian, or autumn felwort is a biennial herbaceous plant, which only produces a low leaf rosette with elliptical to lanceolate leaves in its first year. In the second year it usually grows a stem from 5 to 30 (3 to 50) centimeters long. The stem is straight or branched just above the base; at flowering time it is without leaves which distinguishes it from similar species.

Generative characteristics The flowering period is from July to early October, and the axils produce numerous flowers. The relatively small, hermaphrodite flowers are purplish bells (reddish-violet corolla) are trumpet-shaped between 12 and 22 mm long and have five petals with double perianth (calyx and corolla). The cup is much shorter than the crown tube. The five vestibules are upright and mostly somewhat unequal. The coronet is bearded. The ovary and the fruit are sedentary or rarely short-stalked. The number of chromosomes is 2n = 36.

Taxonomy and distribution Gentianella amarella was first published in 1753 under the name (basionym) Gentiana amarella by Carl Linnaeus. The new combination to Gentianella amarella was published in 1912 by Carl Julius Bernhard Börner. The epithet amarella means somewhat bitter. There are about five subspecies of Gentianella amarella:

Ecology Its habitat is in grass, often on lime-rich soil (in England typically on chalk). It grows on dry, sandy or calcareous soils, but also on wet peat or marl soils and thus thrives in bog meadows. It is growing in the molinion association.

References

External links

"Gentianella amarella agg". FloraWeb.de (in German). Distribution across the Northern hemisphere according to Eric Hultén Thomas Meyer: Kranzenzian Data sheet and identification key with photos Flora-de: Flora von Deutschland. Datenblatt Gentianella amarella in Montana Plant Life.

Illustrations

Worked examples

Example 1 — a first encounter with Gentianella amarella

Start with the simplest possible case. Write down what Gentianella amarella 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 Gentianella amarella 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 Gentianella amarella 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 Gentianella amarella

In research: Gentianella amarella 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 Gentianella amarella 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: Gentianella amarella is common in secondary-school and first-year university syllabi. It links to neighbouring topics Botanical taxa named by Carl Linnaeus, Gentianella, NatureServe secure species, so understanding it makes those chapters shorter.
In everyday life: Look for Gentianella amarella 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.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Gentianella amarella” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Gentianella amarella in 20 minutes

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

Frequently asked questions

What is Gentianella amarella in simple terms?

Why does Gentianella amarella 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 Gentianella amarella?

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 Gentianella amarella.