science

Selaginella kraussiana

Selaginella kraussiana 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 Selaginella kraussiana rather than just read about it. In short: Selaginella kraussiana is a species of vascular plant in the family Selaginellaceae. It is referred to by the common names Krauss' spikemoss, Krauss's clubmoss, or African clubmoss, and is found naturally in parts of Sub-Saharan Africa and in Macaronesia.

Key takeaways

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

Reference excerpt

Selaginella kraussiana is a species of vascular plant in the family Selaginellaceae. It is referred to by the common names Krauss' spikemoss, Krauss's clubmoss, or African clubmoss, and is found naturally in parts of Sub-Saharan Africa and in Macaronesia. It is sometimes given the misnomer of "peacock fern", due to its lacy leaf structure, despite having no relation to actual ferns; rather, it belongs to the very ancient lineage of plants known as the clubmosses.

Description Growing to just 5 cm (2.0 in) high, it is a low-growing, mat-forming evergreen perennial with primitive fern-like leaves, that spreads via rooting stems.

Distribution Its native distribution is the Macaronesia, and parts of south and east Africa. Its native distribution in the Azores was controversial up until 2005, when spores of this species were discovered in 6,000-year-old fossils on Pico. Since its introduction to Britain in 1878 it has spread slowly, and was first recorded in the wild in 1917 in west Cornwall (UK) and County Leitrim (Ireland), often as a greenhouse weed. Selaginella kraussiana is listed on the New Zealand National Pest Plant Accord since it is an invasive species. It is common in many parts of New Zealand and Australia where it forms dense mats in shaded areas.

Cultivation Selaginella kraussiana is cultivated for ornamental purposes. It requires a minimum temperature of 5 °C (41 °F), and in temperate regions is grown under glass as a houseplant. The species and the cultivar 'Brownii' have both gained the Royal Horticultural Society's Award of Garden Merit. Other cultivars include 'Aurea' and 'Gold Tips'. They prefer a sheltered spot, in full or partial shade. They require potting media that retains humidity while not staying overly wet, and drains quickly. An acidic to neutral pH (6.0–7.0) is preferable. In the winter, a cultivar often referred to as Selaginella kraussiana 'Frosty Fern' is sold as a house plant due to its white-tipped foliage; however, this is more often the taller-growing Selaginella martensii, not the shorter, creeping S. kraussiana.

References

External links Media related to Selaginella kraussiana at Wikimedia Commons Data related to Selaginella kraussiana at Wikispecies

Illustrations

Worked examples

Example 1 — a first encounter with Selaginella kraussiana

Start with the simplest possible case. Write down what Selaginella kraussiana 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 Selaginella kraussiana 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 Selaginella kraussiana 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 Selaginella kraussiana

In research: Selaginella kraussiana 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 Selaginella kraussiana 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: Selaginella kraussiana is common in secondary-school and first-year university syllabi. It links to neighbouring topics Flora of Africa, Flora of the Azores, Flora of the Canary Islands, so understanding it makes those chapters shorter.
In everyday life: Look for Selaginella kraussiana 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 Selaginella kraussiana in 20 minutes

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

Frequently asked questions

What is Selaginella kraussiana in simple terms?

Why does Selaginella kraussiana 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 Selaginella kraussiana?

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 Selaginella kraussiana.