science

Tectariaceae

Tectariaceae 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 Tectariaceae rather than just read about it. In short: Tectariaceae is a family of leptosporangiate ferns in the order Polypodiales. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), the family is placed in the suborder Polypodiineae.

Key takeaways

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

Reference excerpt

Tectariaceae is a family of leptosporangiate ferns in the order Polypodiales. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), the family is placed in the suborder Polypodiineae. Alternatively, it may be treated as the subfamily Tectarioideae of a very broadly defined family Polypodiaceae sensu lato. The family comprises seven genera, of which Tectaria is by far the largest.

Taxonomy In 1990, Karl U. Kramer and coauthors treated Pleocnemia and 7 of the currently recognized genera as a subfamily of Dryopteridaceae. Two other genera, Arthropteris and Psammiosorus, along with Oleandra, constituted Kramer's Oleandraceae. It is now known that Kramer's version of Dryopteridaceae is polyphyletic. Arthropteris (including Psammiosorus) lies within Tectariaceae and Tectariaceae is sister to a clade consisting of Oleandraceae, Davalliaceae, and Polypodiaceae. In 2006, in a revision of fern classification, Tectariaceae was an accepted family. In 2007, a molecular phylogenetic study of Dryopteridaceae included Pleocnemia and showed that it belongs in Dryopteridaceae. Also in 2007, Dracoglossum was named as a new genus. It has since been removed to Lomariopsidaceae.

Phylogeny In 2016, a cladistic analysis of Tectariaceae separated two new genera, Draconopteris and Malaifilix, from Tectaria sensu stricto.

Genera As of November 2019, the Checklist of Ferns and Lycophytes of the World accepted the following genera. Polydictyum was separated from Tectaria after the publication of PPG I in 2016.

Arthropteris J.Sm. Draconopteris Li Bing Zhang & Liang Zhang Hypoderris R.Br. Malaifilix Li Bing Zhang & Schuettp. Polydictyum C.Presl Pteridrys C.Chr. & Ching Tectaria Cav. Triplophyllum Holttum

References

External links 400 leptosporangiates A classification for extant ferns

Illustrations

Worked examples

Example 1 — a first encounter with Tectariaceae

Start with the simplest possible case. Write down what Tectariaceae 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 Tectariaceae 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 Tectariaceae 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 Tectariaceae

In research: Tectariaceae 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 Tectariaceae 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: Tectariaceae is common in secondary-school and first-year university syllabi. It links to neighbouring topics Fern families, Tectariaceae, so understanding it makes those chapters shorter.
In everyday life: Look for Tectariaceae 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 Tectariaceae in 20 minutes

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

Frequently asked questions

What is Tectariaceae in simple terms?

Tectariaceae is a family of leptosporangiate ferns in the order Polypodiales. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), the family is placed in the suborder Polypodiineae.

Why does Tectariaceae 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 Tectariaceae?

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 Tectariaceae.