biology

Hygrophorus marzuolus

Hygrophorus marzuolus 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 Hygrophorus marzuolus rather than just read about it. In short: Hygrophorus marzuolus, commonly known as the March mushroom, is a species of fungus in the family Hygrophoraceae. It is known from Asia, Europe, and North America, where it grows on the ground in mixed forests at high elevations.

Key takeaways

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

Reference excerpt

Hygrophorus marzuolus, commonly known as the March mushroom, is a species of fungus in the family Hygrophoraceae. It is known from Asia, Europe, and North America, where it grows on the ground in mixed forests at high elevations.

Taxonomy The species was originally described by Elias Magnus Fries in 1821 as Agaricus marzuolus, and transferred to Hygrophorus in 1893 by Giacomo Bresadola. It is commonly known as the "March mushroom".

Description The fruit bodies have caps that are broadly convex, measuring 2.5–11 cm (1.0–4.3 in) in diameter. Their surfaces are smooth and sticky, with a pale greyish-brown center and darker brown to blackish-grey margin. The distantly spaced, broad gills have an adnate to adnexed attachment to the stipe, and two tiers of intervening lamellulae (short gills). The gills are initially white before turning gray to bluish-gray in age. The whitish stipe measures 3–10 cm (1.2–3.9 in) long by 1–2.5 cm (0.4–1.0 in) thick, and is either equal in width throughout or tapers slightly towards the base. The stipe is smooth except for a few tufts of hairs near the top. Immediately underneath the cap cuticle, the flesh of the cap is water-soaked; elsewhere in the cap, it is gray-tinted with a sheen, while in the stipe it is dull white. It lacks any appreciable odor or taste. It is considered edible in Europe, where it is prized in some regions. The thin-walled, elliptical spores measure 6.5–8.5 by 4.5–5 μm. The basidia (spore-bearing cells) are narrowly club-shaped, four-spored, and measure 42–55 by 5.4–8.1 μm.

Habitat and distribution Hygrophorus marzuolus is a mycorrhizal fungus. Associations have been noted with the trees Abies alba, and sometimes with Picea excelsa and Pinus sylvestris. Fruit bodies grow singly to scattered or sometimes in clusters on the forest floor in duff or in moss. It fruits under conifers, often fir and Engelmann spruce, typically at high elevations. A snowbank mushroom, it is associated with melting snow, and fruiting is initiated under snowbanks. The fungus has been recorded from the mountains of Idaho, Montana, Oregon, Washington, northern Arizona, and northern California. The European distribution extends from the French Pyrenees to the region of Prague. In Asia, it has been reported from Pakistan.

Illustrations

Worked examples

Example 1 — a first encounter with Hygrophorus marzuolus

Start with the simplest possible case. Write down what Hygrophorus marzuolus 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 Hygrophorus marzuolus 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 Hygrophorus marzuolus 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 Hygrophorus marzuolus

In research: Hygrophorus marzuolus 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 Hygrophorus marzuolus 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: Hygrophorus marzuolus is common in secondary-school and first-year university syllabi. It links to neighbouring topics Edible fungi, Fungi described in 1821, Fungi of Asia, so understanding it makes those chapters shorter.
In everyday life: Look for Hygrophorus marzuolus 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 Hygrophorus marzuolus in 20 minutes

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

Frequently asked questions

What is Hygrophorus marzuolus in simple terms?

Why does Hygrophorus marzuolus 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 Hygrophorus marzuolus?

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 Hygrophorus marzuolus.