biology

Pinus devoniana

Pinus devoniana 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 Pinus devoniana rather than just read about it. In short: Pinus devoniana (synonym Pinus michoacana) is a species of conifer in the family Pinaceae. It is found in more than 15 states of Mexico - from S.

Key takeaways

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

Reference excerpt

Pinus devoniana (synonym Pinus michoacana) is a species of conifer in the family Pinaceae. It is found in more than 15 states of Mexico - from S. Sinaloa to Chiapas - and Guatemala in montane, relatively open pine or pine-oak forests at altitudes from 900 to 2,500 m (3,000 to 8,200 ft). Pinus devoniana, which is locally called "pino blanco", "pino lacio" or "pino prieto", is a tree of medium size, which can grow 20–30 m (66–98 ft) tall, with a dbh to 80–100 cm (31–39 in). It has curved foliage twigs and very long needles, typically from 25–40 cm (9.8–15.7 in), though Mirov cites needles up to 50 cm (20 in) long, in fascicles of 5. The cones, which grow solitary or in whorls of 2-4 on thick, short peduncles, leaving a few scales on the branch when falling, are usually large and often curved, 15–35 cm (5.9–13.8 in) long and 8–15 cm (3.1–5.9 in) wide when open. Pinus devoniana is closely related to Pinus montezumae (the Montezuma pine). These species are sometimes difficult to distinguish, while hybrids probably occur. The cones are especially variable. Overall, both foliage and cones are larger in Pinus devoniana.

References

Literature and sources

Dallimore, W. and Bruce Jackson – A handbook of Coniferae. Edward Arnold Publishers, London 1923, 2nd ed. 1931, 3rd ed. 1948, reprinted 1954 Farjon, Aljos – Pines; drawings and descriptions of the genus Pinus. Brill/Backhuys, Leiden 1984 Farjon, Aljos, Jorge A. Perez de la Rosa & Brian T. Styles (ill. Rosemary Wise) – A field guide to the Pines of Mexico and Central America. Royal Botanic Gardens, Kew, in association with the Oxford Forestry Institute, Oxford 1997 Farjon, Aljos and Brian T. Styles – Pinus (Pinaceae); monograph 75 of Flora Neotropica. New York Botanical Gardens, New York 1997 Farjon, Aljos – World checklist and bibliography of Conifers. Second edition. Royal Botanic Gardens, Kew 2001 Kent, Adolphus H. – Veitch's Manual of the Coniferae. James Veitch & Sons, Chelsea 1900. Lanyon, Joyce W. - A card key to Pinus based on needle anatomy. Min. for Conservation, Sydney, New South Wales, Australia 1966

Illustrations

Worked examples

Example 1 — a first encounter with Pinus devoniana

Start with the simplest possible case. Write down what Pinus devoniana 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 Pinus devoniana 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 Pinus devoniana 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 Pinus devoniana

In research: Pinus devoniana 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 Pinus devoniana 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: Pinus devoniana is common in secondary-school and first-year university syllabi. It links to neighbouring topics Flora of the Sierra Madre Occidental, IUCN Red List least concern species, Least concern plants, so understanding it makes those chapters shorter.
In everyday life: Look for Pinus devoniana 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 Pinus devoniana in 20 minutes

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

Frequently asked questions

What is Pinus devoniana in simple terms?

Pinus devoniana (synonym Pinus michoacana) is a species of conifer in the family Pinaceae. It is found in more than 15 states of Mexico - from S.

Why does Pinus devoniana 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 Pinus devoniana?

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 Pinus devoniana.