biology

Thymus (plant)

Thymus (plant) 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 Thymus (plant) rather than just read about it. In short: The genus Thymus ( TY-məs; thymes) contains about 350 species of aromatic perennial herbaceous plants and subshrubs in the family Lamiaceae. It is native to the Mediterranean area of Europe, North Africa and Turkey.

Key takeaways

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

Reference excerpt

The genus Thymus ( TY-məs; thymes) contains about 350 species of aromatic perennial herbaceous plants and subshrubs in the family Lamiaceae. It is native to the Mediterranean area of Europe, North Africa and Turkey. Several members of the genus are cultivated as culinary herbs or ornamentals, when they are also called thyme after its best-known species, Thymus vulgaris or common thyme.

Description

The plants grow up to 40 centimetres (16 in) tall. The stems tend to be narrow or even wiry. The leaves are evergreen in most species, arranged in opposite pairs, oval, entire, and small, 4–20 millimetres (1⁄8–3⁄4 in) long, and usually aromatic. Thyme flowers are in dense terminal heads with an uneven calyx, with the upper lip three-lobed, and are yellow, white, or purple.

Classification A considerable amount of confusion has existed in the naming of thymes. Many nurseries use common names rather than binomial names, which can lead to mix-ups. For example golden thyme, lemon thyme, and creeping thyme are all common names for more than one cultivar. Some confusion remains over the naming and taxonomy of some species, and Margaret Easter (who holds the NCCPG National Plant Collection of thymes in the UK) has compiled a list of synonyms for cultivated species and cultivars. The most common classification is that used by Jalas, in eight sections:

Micantes: Iberian Peninsula, Madeira and the Azores, includes T. caespititius Mastichina: Iberian Peninsula, includes T. mastichina Piperella: Monotypic section confined to the vicinity of Valencia, Spain Teucrioides: Balkan Peninsula Pseudothymbra: Iberian Peninsula and north Africa, includes T. cephalotos, T. longiflorus and T. membranaceus Thymus: Western Mediterranean region, includes T. camphoratus, T. carnosus, T. hyemalis, T. vulgaris and T. zygis Hyphodromi: Throughout the Mediterranean region, includes T. cilicicus and T. comptus Serpyllum: The largest section, throughout whole region, apart from Madeira and Azores, includes T. comosus, T. doerfleri, T. herba-barona, T. longicaulis, T. pannonicus, T. praecox, T. pulegioides, T. quinquecostatus, T. richardii, T. serpyllum, T. sibthorpii and T. thracicus

Selected species

Distribution and habitat The genus is native to temperate regions in Europe, North Africa and Asia. Thymus is particularly concentrated in Iran, attributed to the country's diverse climate and location both in terms of geography and topography. Thymus quinquecostatus Celak is present in Korea.

Ecology Thymus species are used as food plants by the larvae of some butterfly and moth insect species, including Chionodes distinctella and the Coleophora case-bearers C. lixella, C. niveicostella, C. serpylletorum, and C. struella (the last three feeding exclusively on Thymus).

Cultivation Thymus is cultivated for its fragrant leaves and used as a culinary herb in Mediterranean cooking. Mrs Margaret Easter was appointed International Cultivar Registration Authority for the genus in 2007.

Uses

Thyme is packed with phytonutrients, vitamins and minerals. Thyme species such as T. fedtschenkoi, T. pubescens, and T. transcaucasicus have large amounts of the essential oils thymol and carvacrol. These Thymus species are used for herbal tea, spice, and medicine. The therapeutic effect of thyme is largely attributed to these essential oils belonging to the terpenoids family. Thyme is considered amongst the most consequential medicinal plants due to its substantial amount of bioactive compounds. Thyme has been used to treat diabetes, cold and chest infections, and coughs. In conventional Korean medicine, T. quinquecostatus Celak has been used to treat cancer, hepatic disease, and constipation.

References

Sources Easter M. Thymus University of Melbourne: Thymus

External links World Checklist

Illustrations

Worked examples

Example 1 — a first encounter with Thymus (plant)

Start with the simplest possible case. Write down what Thymus (plant) 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 Thymus (plant) 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 Thymus (plant) 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 Thymus (plant)

In research: Thymus (plant) 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 Thymus (plant) 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: Thymus (plant) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Botanical taxa named by Carl Linnaeus, Lamiaceae genera, Subshrubs, so understanding it makes those chapters shorter.
In everyday life: Look for Thymus (plant) 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 Thymus (plant) in 20 minutes

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

Frequently asked questions

What is Thymus (plant) in simple terms?

Why does Thymus (plant) 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 Thymus (plant)?

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 Thymus (plant).