biology

Quercus wislizeni

Quercus wislizeni 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 Quercus wislizeni rather than just read about it. In short: Quercus wislizeni, known by the common name interior live oak, is an evergreen oak, highly variable and often shrubby, found in western North America. Description It is a large shrub or tree growing to 22 metres (72 feet) tall, although where it is common in the low-elevation Sierra Nevada foothills it seldom exceeds 10 m (33 ft).

Key takeaways

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

Reference excerpt

Quercus wislizeni, known by the common name interior live oak, is an evergreen oak, highly variable and often shrubby, found in western North America.

Description It is a large shrub or tree growing to 22 metres (72 feet) tall, although where it is common in the low-elevation Sierra Nevada foothills it seldom exceeds 10 m (33 ft). The dark-green leaves—appearing grayish from a distance—are usually small, 2–7 centimetres (1–3 inches) long, thick, and often spiny-toothed at higher elevations, particularly on young trees. The male flowers are on catkins, the female flowers in groups of 2–4 in leaf axils. The acorns are 1–2 cm (1⁄2–1 in) long, and mature the second season (about 18 months) after flowering. Specimens can live for up to 200 years.

Taxonomy

Although originally published by Alphonse Pyramus de Candolle as "wislizeni", some sources mistakenly spelled the specific epithet "wislizenii". Correct spelling is with one "I", per ICN article 60C.2. Friedrich Adolph Wislizenus's specimen was thought by de Candolle to have been collected in Chihuahua, Mexico. German-born American botanist Georg Engelmann later corrected the location to the American fork of the Sacramento River near Auburn, California. California physician and botanist (and one of the founding fathers of the California Academy of Sciences) Albert Kellogg described an oak in an 1855 publication as Quercus arcoglandis (spur acorn oak), apparently the same species as Q. wislizeni. This clearly predates French-Swiss botanist de Candolle's 1864 name, and if confirmed to be this same taxon would have priority. Currently there are two recognized varieties of interior live oak:

Q. wislizeni A. DC. var. wislizeni (1864) Q. wislizeni A. DC. var. frutescens Engelm (1878). This is an invalid taxon. Engelmann's Q. wislizeni var. frutescens description is virtually identical to de Candolle's Q. wislizeni, while Engelmann's Q. wislizeni description most closely matches Kellogg's Q. morehus.

Etymology It was named for its collector, Friedrich Adolph Wislizenus (1810–1889).

Distribution and habitat Q. wislizeni is found in many areas of California in the United States continuing south into northern Baja California in Mexico. It generally occurs in foothills, being most abundant in the lower elevations of the Sierra Nevada, but also widespread in the Pacific Coast Ranges—where since 1980 it has been known as a separate species Quercus parvula—and the San Gabriel Mountains.

Ecology The interior live oak is a red oak (section Lobatae) in the California Floristic Province (series Agrifoliae). Q. wislizeni hybridizes with California black oak (Q. kelloggii) (= Quercus × morehus, Abram's oak). All California red oaks show evidence of introgression and/or hybridization with one another. A common alliant tree is gray pine (Pinus sabiniana). Deer browse the tree's foliage.

Uses Humans use the wood as a fuel source. The acorns are edible.

References

Bibliography Nixon, Kevin C. (1997). "Quercus wislizeni". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). Vol. 3. New York and Oxford: Oxford University Press – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA. Rosatti, Thomas J.; Tucker, John M. (2014). "Quercus parvula". In Jepson Flora Project (ed.). Jepson eFlora. The Jepson Herbarium, University of California, Berkeley. Rosatti, Thomas J.; Tucker, John M. (2014). "Quercus wislizeni". In Jepson Flora Project (ed.). Jepson eFlora. The Jepson Herbarium, University of California, Berkeley.

External links

C. Michael Hogan (2008) California Buckeye: Aesculus californica, GlobalTwitcher.com, N. Stromberg ed.

Illustrations

Worked examples

Example 1 — a first encounter with Quercus wislizeni

Start with the simplest possible case. Write down what Quercus wislizeni 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 Quercus wislizeni 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 Quercus wislizeni 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 Quercus wislizeni

In research: Quercus wislizeni 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 Quercus wislizeni 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: Quercus wislizeni is common in secondary-school and first-year university syllabi. It links to neighbouring topics Drought-tolerant trees, Flora of California, Garden plants of North America, so understanding it makes those chapters shorter.
In everyday life: Look for Quercus wislizeni 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 “Quercus wislizeni” →

Affiliate

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

How to study Quercus wislizeni in 20 minutes

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

Frequently asked questions

What is Quercus wislizeni in simple terms?

Quercus wislizeni, known by the common name interior live oak, is an evergreen oak, highly variable and often shrubby, found in western North America. Description It is a large shrub or tree growing to 22 metres (72 feet) tall, although where it is common in the low-elevation Sierra Nevada foothill…

Why does Quercus wislizeni 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 Quercus wislizeni?

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 Quercus wislizeni.