biology

List of Symphyotrichum species

List of Symphyotrichum species 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 List of Symphyotrichum species rather than just read about it. In short: Symphyotrichum is a genus of flowering plants in the tribe Astereae which includes the commonly cultivated New York aster (S. novi-belgii) and New England aster (S. novae-angliae). Its species are widespread in the Americas, including as far north as subarctic North America to as far south as Chile, Argentina, and the Falkland Islands.

Key takeaways

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

Reference excerpt

Symphyotrichum is a genus of flowering plants in the tribe Astereae which includes the commonly cultivated New York aster (S. novi-belgii) and New England aster (S. novae-angliae). Its species are widespread in the Americas, including as far north as subarctic North America to as far south as Chile, Argentina, and the Falkland Islands. One species has a native range extending into eastern Eurasia. Most of the species in the genus are perennials. The flower heads have white, pink, purple, or blue ray florets surrounding white to yellow disk florets. The disk floret corollas become pink, purple, or brown after pollination. The three species in section Conyzopsis have reduced or absent ray florets. Symphyotrichum is the type genus of subtribe Symphyotrichinae. There are 98 species in the genus, some with varieties, and thirteen named hybrids. The genus is split into five subgenera: Chapmaniana, Astropolium, Virgulus, Ascendentes, and Symphyotrichum. Most of the species had been classified within the genus Aster until it was confirmed to be polyphyletic. The American asters now are separated into monophyletic genera based on multiple phylogenetic studies.

Conventions

Conservation status codes follow the NatureServe conservation (NS) rounded global status scheme. Hybrids have a column for parents in place of conservation status. Not listed (NL) is not a NatureServe category but is used here to represent those left out of global status rankings up to G5 (including GNA and GNR) and those not in NatureServe. Type species for each clade are in a separate table.

Classification

Classification of Symphyotrichum

Classification within Symphyotrichum Most of the species had been classified within the genus Aster until it was confirmed to be polyphyletic – as previously defined, the genus Aster contained groups of species with different most recent ancestors. The American asters were then separated into several genera based on morphological characteristics and phylogenetic studies. Within Symphyotrichum, S. novae-angliae and S. turbinellum are monotypic within sections. S. novae-angliae is classified in the subgenus Virgulus. In 1994, it was placed in section Grandiflori, subsection Polyligulae. In 2002, it was segregated within its own section Polyliguli. The list follows the 2002 circumscription of section Polyliguli for the species. S. turbinellum is classified in the subgenus Symphyotrichum. It has been placed within its own section Turbinelli. It was previously placed in section Symphyotrichum, subsection Turbinelli. The list follows the more recent circumscription of section Turbinelli for the species.

Species list

Subgenus Chapmaniana

Subgenus Astropolium

Subgenus Virgulus Subgenus Virgulus (Raf.) G.L.Nesom

Section Ericoidei

Section Patentes Section Patentes (Torr. & A.Gray) G.L.Nesom

Subsection Brachyphylli

Subsection Patentes

Section Grandiflori Section Grandiflori (Torr. & A.Gray) G.L.Nesom

Subsection Mexicanae

Subsection Grandiflori

Section Polyliguli

Section Concolores

Subgenus Virgulus named hybrids

Subgenus Ascendentes This subgenus contains two allopolyploid species derived from the historic hybridization of plants from the subgenera Symphyotrichum and Virgulus.

Subgenus Symphyotrichum

Section Conyzopsis The three species in section Conyzopsis have reduced or absent ray florets.

Section Occidentales

Section Turbinelli

Section Symphyotrichum

Subsection Dumosi

Subsection Heterophylli Subsection Heterophylli (Nees) Semple

Series Concinni

Series Cordifolii

Subsection Porteriani

Subsection Symphyotrichum

Series Punicei

Series Symphyotrichum

Subgenus Symphyotrichum named hybrids

Notes

Citations

References

Illustrations

Worked examples

Example 1 — a first encounter with List of Symphyotrichum species

Start with the simplest possible case. Write down what List of Symphyotrichum species 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 List of Symphyotrichum species 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 List of Symphyotrichum species 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 List of Symphyotrichum species

In research: List of Symphyotrichum species 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 List of Symphyotrichum species 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: List of Symphyotrichum species is common in secondary-school and first-year university syllabi. It links to neighbouring topics Lists of plant species, Symphyotrichum, so understanding it makes those chapters shorter.
In everyday life: Look for List of Symphyotrichum species 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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Frequently asked questions

What is List of Symphyotrichum species in simple terms?

Why does List of Symphyotrichum species 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 List of Symphyotrichum species?

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 List of Symphyotrichum species.