biology

Penstemon procerus

Penstemon procerus 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 Penstemon procerus rather than just read about it. In short: Penstemon procerus is a species of penstemon known by the common name littleflower penstemon. It is native to western North America from Alaska to California to Colorado, as far east in Canada as Manitoba, where it grows in mountain habitat such as meadows, often in alpine climates.

Key takeaways

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

Reference excerpt

Penstemon procerus is a species of penstemon known by the common name littleflower penstemon. It is native to western North America from Alaska to California to Colorado, as far east in Canada as Manitoba, where it grows in mountain habitat such as meadows, often in alpine climates. This herbaceous perennial forms mats of herbage with some erect stems reaching about 40 centimeters in maximum height. There are several varieties which vary in morphology, some more decumbent than others, some of which are known commonly as pincushion penstemons for their matted forms. In general, the leaves are lance-shaped to oval, plentiful around the base of the plant with smaller ones arranged in opposite pairs along the stem. The inflorescence is made up of one or more clusters of tubular flowers with lipped, lobed mouths. Each flower is no more than one centimeter in length and is purple to blue in color, often with a white throat. The outside of the flower is generally hairless, while the inside may be lined with white or yellowish hairs.

Description Littleflower penstemons have a wide range of heights when mature, typically 3 to 40 centimeters (1–16 in), but occasionally as tall as 70 cm (28 in). Its stems can be hairless or be more or less covered in backwards pointing stiff hairs, but are never glaucous. The flowering stems can either grow straight upwards or lean outwards from the base of the plant before growing upwards, occasionally they may grow along the ground. The non-flowering stems are often numerous enough for form a mat at the base of the plant. Plants can have both basal leaves, springing directly from the base of the plant, and leaves attached to the stems, but in some plants the basal leaves are not well developed. They might have a somewhat leathery texture and can have rough backwards pointing hairs, be simply hairy, or hairless. Basal leaves and the ones lowest on the stems range from 0.9 to 9 cm long, only occasionally reaching 11.5 cm.

Taxonomy Penstemon procerus was given its scientific name in 1829 by Robert Graham, crediting the work of David Douglas. It is part of the genus Penstemon which is classified in the family Plantaginaceae. It has six accepted varieties.

Penstemon procerus var. aberransNative to Utah. Penstemon procerus var. brachyanthusNative to Oregon and northwestern California. Penstemon procerus var. formosusNative to Oregon, California, and western Nevada. Penstemon procerus var. modestusNative to Nevada. Penstemon procerus var. procerusWidespread from Alaska to Colorado. Penstemon procerus var. tolmieiNative to eastern central British Columbia and eastern Washington. Penstemon procerus has 29 synonyms of the species or one of its subspecies.

Names The specific epithet, procerus, is Botanical Latin meaning "tall", however the alpine forms of the species are quite short. It is frequently called by the common names littleflower penstemon or little flower penstemon. It is similarly known as the small-flowered penstemon, small-flowered beardtongue, and little blue penstemon. It is also known as tall penstemon, pincushion penstemon, and slender blue penstemon.

Cultivation In cultivation in the UK the cultivar 'Roy Davidson' has won the Royal Horticultural Society's Award of Garden Merit. It copes with a range of situations, but requires a well-drained medium in full or partial sun.

References

Citations

Sources Books

Web sources

External links Jepson Manual Treatment Photo gallery

Illustrations

Worked examples

Example 1 — a first encounter with Penstemon procerus

Start with the simplest possible case. Write down what Penstemon procerus 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 Penstemon procerus 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 Penstemon procerus 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 Penstemon procerus

In research: Penstemon procerus 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 Penstemon procerus 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: Penstemon procerus is common in secondary-school and first-year university syllabi. It links to neighbouring topics Flora of Idaho, NatureServe secure species, Penstemon, so understanding it makes those chapters shorter.
In everyday life: Look for Penstemon procerus 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 Penstemon procerus in 20 minutes

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

Frequently asked questions

What is Penstemon procerus in simple terms?

Why does Penstemon procerus 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 Penstemon procerus?

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 Penstemon procerus.