biology

Myrtillocactus schenckii

Myrtillocactus schenckii 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 Myrtillocactus schenckii rather than just read about it. In short: Myrtillocactus schenckii, also known as garambullo or vichishovo, is a species of cacti native to Oaxaca and Puebla, Mexico. Placed in the genus Myrtillocactus, it is a member of the large and diverse family Cactaceae.

Key takeaways

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

Reference excerpt

Myrtillocactus schenckii, also known as garambullo or vichishovo, is a species of cacti native to Oaxaca and Puebla, Mexico. Placed in the genus Myrtillocactus, it is a member of the large and diverse family Cactaceae.

Description Arborescent, erect cactus, up to 2–7 m (6 ft 7 in – 23 ft 0 in) tall. The main stem is short, with branches up to 10 cm (3.9 in) wide, shaped like a "chandelier", much branched near the base of the trunk, stems 6–12 cm (2.4–4.7 in) in diameter, with 6–8 ribs, bluish-green. Radial spines, whose length is from 0.5 to 1.2 cm (0.20 to 0.47 in) and from 0.5 to 0.8 mm (0.020 to 0.031 in) wide, ending in a point at the top, straight, rigid, black and greyish. Central spine between 1 and sometimes absent, between 1–5 cm (0.39–1.97 in) long and between 0.8 and 1 mm (0.031 and 0.039 in) wide, grayish or black in color and straight. Flowers, axillary, to 3.5 cm (1.4 in) wide and 3 cm (1.2 in) broad, yellowish-green to yellowish-white. Fruits, red, globose or ellipsiodal, 8–15 mm (0.31–0.59 in) in diameter, sometimes with a few weak spines. Juicy red to brown pulp. Asymmetric, oval seed 1.1 to 1.5 mm (0.043 to 0.059 in) long by 8 to 1.2 mm (0.315 to 0.047 in) wide, black in color and wrinkled in appearance.

Distribution and habitat This species has a distribution restricted to the states of Chiapas, Oaxaca and Puebla. Outside of Mexico, it has been registered in Guatemala. This species is characteristic of the xeric scrublands and transition areas with low deciduous forest. This species is characteristic of arid and semi-arid climate, they are generally found in gypsum and limestone soils, often with high salt content, as is the case in the Tehuacán-Cuicatlán valley. It is distributed in an altitudinal range of 1,300 to 2,000 m (4,300 to 6,600 ft). The places where the species is distributed, present a dry, arid, semi-warm climate, with a marked wet season in the summer, where the average annual rainfall is between 380 and 450 mm (15 and 18 in) and its average temperature throughout the year is of 21.2 °C (70.2 °F).

Taxonomy The first description as Cereus schenckii was published in 1909 by Joseph Anton Purpus. The specific epithet schenckii honors the German botanist Heinrich Schenck. Nathaniel Lord Britton and Joseph Nelson Rose placed the species in the genus Myrtillocactus in the same year

References

External links Media related to Myrtillocactus schenckii at Wikimedia Commons Data related to Myrtillocactus schenckii at Wikispecies

Illustrations

Worked examples

Example 1 — a first encounter with Myrtillocactus schenckii

Start with the simplest possible case. Write down what Myrtillocactus schenckii 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 Myrtillocactus schenckii 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 Myrtillocactus schenckii 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 Myrtillocactus schenckii

In research: Myrtillocactus schenckii 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 Myrtillocactus schenckii 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: Myrtillocactus schenckii is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cacti of Mexico, Drought-tolerant plants, Flora of Southern Mexico, so understanding it makes those chapters shorter.
In everyday life: Look for Myrtillocactus schenckii 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 Myrtillocactus schenckii in 20 minutes

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

Frequently asked questions

What is Myrtillocactus schenckii in simple terms?

Why does Myrtillocactus schenckii 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 Myrtillocactus schenckii?

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 Myrtillocactus schenckii.