science

Limnanthes douglasii

Limnanthes douglasii 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 Limnanthes douglasii rather than just read about it. In short: Limnanthes douglasii is a species of annual flowering plant in the family Limnanthaceae (meadowfoam) commonly known as Douglas' meadowfoam or poached egg plant. It is native to California and Oregon, where it grows in wet, grassy habitat, such as vernal pools and spring meadows.

Key takeaways

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

Reference excerpt

Limnanthes douglasii is a species of annual flowering plant in the family Limnanthaceae (meadowfoam) commonly known as Douglas' meadowfoam or poached egg plant. It is native to California and Oregon, where it grows in wet, grassy habitat, such as vernal pools and spring meadows. It can grow in poorly drained clay soils. The plant was collected by the Scottish explorer and botanist David Douglas, who worked on the west coast of America in the 1820s. The plant usually bears white flowers with yellow centers, hence the name "poached egg plant", but flower color can vary across subspecies. It is a popular ornamental plant. It attracts hoverflies and is pollinated by bees. It is self-seeding, even in a lawn. This plant has gained the Royal Horticultural Society's Award of Garden Merit. There are six subspecies:

L. douglasii subsp. douglasii R. Br., is native to the coastal mountains and valleys of southwestern Oregon south to the San Francisco Bay Area L. douglasii subsp. nivea (C.T. Mason) C.T. Mason, with mostly white flowers, grows in the coastal mountains of northern California L. douglasii subsp. ornduffii (E. G. Buxton), with 4 petals instead of 5, is endemic to California's San Mateo County L. douglasii subsp. rosea (Benth.) C.T. Mason, found in California's Central Valley and adjacent hills, often has pink veining on its petals L. douglasii subsp. sulphurea (C.T. Mason) C.T. Mason, is a rare yellow-petaled subspecies endemic to the Bay Area L. douglasii subsp. striata (Jeps.) Morin, has recently been subsumed into this species; it occurs in the Klamath range and the north and central Sierra Nevada The exact amount of subspecies had been disputed, with some arguing that there are four subspecies of Limnanthes douglasii, though existing species are highly polymorphic.

Species interactions Andrena pulverea (syn. limnanthii) is a species of mining bee that specializes in pollinating the flowers of L. douglasii subsp. rosea.

Gallery

References

External links Jepson Manual Treatment CalPhotos

Illustrations

Worked examples

Example 1 — a first encounter with Limnanthes douglasii

Start with the simplest possible case. Write down what Limnanthes douglasii 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 Limnanthes douglasii 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 Limnanthes douglasii 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 Limnanthes douglasii

In research: Limnanthes douglasii 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 Limnanthes douglasii 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: Limnanthes douglasii is common in secondary-school and first-year university syllabi. It links to neighbouring topics Annual plants, Brassicales stubs, Flora of California, so understanding it makes those chapters shorter.
In everyday life: Look for Limnanthes douglasii 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.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Limnanthes douglasii” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Limnanthes douglasii in 20 minutes

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

Frequently asked questions

What is Limnanthes douglasii in simple terms?

Why does Limnanthes douglasii 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 Limnanthes douglasii?

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 Limnanthes douglasii.