science

Phlox carolina

Phlox carolina is a science 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 Phlox carolina rather than just read about it. In short: Phlox carolina, the thickleaf phlox, is a species of flowering plant in the family Polemoniaceae. It is an herbaceous perennial growing to 1.2 m (4 ft) tall by 45 cm (18 in) wide, with leaves to 13 cm (5 in) long, and purple or pink flowers in summer.

Key takeaways

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

Reference excerpt

Phlox carolina, the thickleaf phlox, is a species of flowering plant in the family Polemoniaceae. It is an herbaceous perennial growing to 1.2 m (4 ft) tall by 45 cm (18 in) wide, with leaves to 13 cm (5 in) long, and purple or pink flowers in summer. The specific epithet carolina refers to its native habitat in the eastern United States. It grows in woodland edges and openings. Flowers attract bees, hummingbirds, and butterflies. It is the parent of numerous garden cultivars, of which 'Bill Baker' (pink) and 'Miss Lingard' (pure white) have gained the Royal Horticultural Society's Award of Garden Merit.

Description Phlox carolina grows from 1 to 5 feet tall, typically 2 to 3 feet tall, and 1 to 2 feet wide at maturity. It is a herbaceous perennial. Phlox carolina flowers from May to late June, flowering indeterminately throughout the season. The flowers are less than one inch in length and are pink, purple, or white. They are located in bunches or a dome shape at the top of the plant. The inflorescence of Phlox carolina is panicle-shaped with a fragrant scent. The leaf type of Phlox carolina is simple with an opposite arrangement, an entire margin, and a lanceolate to ovate shape. They are 1 to 4 inches long. The stem is red and is pubescently haired. The fruit is capsule-shaped and fully matured in summer.

Taxonomy Phlox carolina belongs to the order Ericales (rhododendrons), the family Polemoniaceae (Jacob's-ladder or phlox family), and the phlox group Ovatae. It was described and named by several individuals before being included in Carl Linnaeus's second edition of Species Plantarum. It was named and described many times due to taxonomic confusion. Phlox carolina was also historically used as a catch-all name for undescribed species of phlox. Some databases include Phlox carolina as a subspecies of Phlox glaberrima, or vice versa as the two species are similar. Previous names for Phlox carolina include Phlox caroliniana, Phlox altissima, Phlox triflora, Phlox suffruticosa, and Phlox heterophylla. These names are now either a different species of Phlox or a subspecies or variation of Phlox carolina. Phlox carolina can be confused with similar-looking relatives such as Phlox paniculata, Phlox maculata, and Phlox glaberrima. The Phlox genus has lots of variation in phenotypes and tends to hybridize quickly, therefore gene sequencing often has to be used to identify which species a phlox is. This confusion is referred to as the "P. glaberrima complex". Plant geneticists use the ITS spacer of ribosomal and chloroplast DNA to differentiate P. carolina from other closely related Phlox species to resolve the complex.

Distribution and habitat Phlox carolina is native to the southeastern United States from Florida to Indiana west to east and from North Carolina to Texas north to south. It tends to grow in open forested areas, forest edges, roadsides, and clearings. It can also be found in gardens as an ornamental plant. Phlox carolina grow in moist habitats and can grow in loam, clay, sand, or high-nutrient soil. It thrives in soil pH below 6.8. It is heat tolerant and grows in full sun or partial shade. Phlox carolina grows in hardiness zones 5a to 9b. Phlox carolina is considered to be critically imperiled in West Virginia.

Uses Phlox carolina is often used as an ornamental plant in gardens, and it serves as a pollinator plant that attracts bees, hummingbirds, and butterflies. It serves as a food source for small mammals such as Cottontail Rabbits. Phlox carolina is often used as a reference in gene studies to count the differing number of chromosome that differing species contain. Phlox carolina has 14 diploid chromosomes. Phlox carolina is also used as a Tall Phlox for studies on mechanical aspects of hybridization success in relation to height, as taller phlox species have longer pollen tubes and larger pollen grains than short phlox species.

Cultivars As a popular ornamental flowering plant, Phlox carolina has many cultivars such as "Minnie Pearl" with white flowers, "Kim" with pink flowers, "Gypsy Love," which is shorter than the others with pink flowers, and "Magnificence," which is taller than the others with purple-pink flowers. The most common cultivar is known as the "Miss Lingard," as known as wedding phlox, with white flowers and is a popular floral arrangement used for weddings.

Common diseases Phlox carolina is susceptible to black root rot from Berkeleyomyces (root rot fungi), Phytophthora blight and root rot caused by phytophthora (water molds). Other fungi diseases include Cotton root rot caused by Phymatotrichum omnivorum. Phlox carolina can suffer from leaf spots caused by a number of different fungi aliments including Septoria divaricata, stem blight caused by members of Pyrenochaeta, and wilts caused by Verticillium albo-atrum. Phlox carolina tends to be more resistant to powdery mildew than other phlox, especially in wild populations. Like most plants, Phlox carolina is susceptible to plant galls, specifically crown galls caused by Agrobacterium tumefaciens. Phlox carolina is susceptible to several insect pest such as, the four-lined plant bug, Phlox plant bug, Lopidea plant bug, the oriental beetle, and spider mites.

References

Illustrations

Worked examples

Example 1 — a first encounter with Phlox carolina

Start with the simplest possible case. Write down what Phlox carolina claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 Phlox carolina 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 Phlox carolina 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 Phlox carolina

In research: Phlox carolina appears in science 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 Phlox carolina 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: Phlox carolina is common in secondary-school and first-year university syllabi. It links to neighbouring topics Botanical taxa named by Carl Linnaeus, Flora of Northern America, Flora of the United States, so understanding it makes those chapters shorter.
In everyday life: Look for Phlox carolina 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 Phlox carolina in 20 minutes

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

Frequently asked questions

What is Phlox carolina in simple terms?

Why does Phlox carolina matter?

Because it connects several science 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 Phlox carolina?

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 Phlox carolina.