biology

Psilocybe weraroa

Psilocybe weraroa 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 Psilocybe weraroa rather than just read about it. In short: Psilocybe weraroa, formerly Weraroa novae-zelandiae, is a secotioid fungus in the family Hymenogastraceae. It is endemic to New Zealand, where it grows in native forests from rotting wood and woody debris.

Key takeaways

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

Reference excerpt

Psilocybe weraroa, formerly Weraroa novae-zelandiae, is a secotioid fungus in the family Hymenogastraceae. It is endemic to New Zealand, where it grows in native forests from rotting wood and woody debris. Despite its pouch-like form this species is closely related to Psilocybe cyanescens and Psilocybe subaeruginosa. As a bluing member of the genus Psilocybe it contains the psychoactive compounds psilocin and psilocybin. It has been cultivated commercially by Rua Bioscience with a view to researching potential medical applications, bringing together Rongoā Māori with the recent interest in Western medicine in the medical applications of psilocin and psilocybin.

Taxonomy and naming The species was first described in the literature in 1924 by the New Zealand-based mycologist Gordon Heriot Cunningham, under the name Secotium novae-zelandiae. Rolf Singer transferred it to the genus Weraroa in 1958. Phylogenetic analysis by Moncalvo (2002) and Bridge et al. (2008) has demonstrated the close relationship between Weraroa novae-zelandiae and the hallucinogenic blue-staining group of Psilocybe, particularly Psilocybe subaeruginosa. Phylogenetic analysis published by Borovička and colleagues (2011) showed this species is very close to Psilocybe cyanescens. Given this and the apparently distant relation with other species of Weraroa Borovička et al. (2011) suggested renaming the species Psilocybe weraroa. Weraroa has since been adopted as the common name for this species in te reo Māori.

Etymology The species epithet weraroa is taken from the former generic name, which refers to the type locality. The binomial Psilocybe novae-zelandiae could not be used, as it had been applied to another species in 1978 by Gastón Guzmán and Egon Horak (now Deconica novae-zelandiae).

Description Pileus (Peridium) 3–5 cm (1.2–2.0 in) long by 1.5–3 cm (0.59–1.18 in) wide, roundish, ovate (wider at the base and tapering towards the end, egg-shaped) or elongated and elliptic (tapered at the base and apex with a swollen mid-section), base decurrent (extending down the stem below the insertion) or rounded and blunt, margin folded and often torn, light brown when young, becoming french-grey or pale blue-grey, sometimes pallid green in age, longitudinally fibrillose causing a finely striated appearance, becoming smooth, polished, glabrous, tacky and leathery in age, slowly bruising blue or greenish when injured, drying yellow to dingy brown. Stipe up to 40 mm (1.6 in) long by 6 mm (0.24 in) in diameter, slender, equal in width, whitish to french-grey, bruising blue or greenish with damage, yellowish-brown at the base, initially fibrillose but becoming smooth, polished and cartilaginous in age excluding at the base, hollow, flesh yellow-orange, thickening at the internal apex. Gleba sepia-brown to chocolate-brown, cellular, coarsely shaped, often elongated, laterally compressed, sparse, chambered and gill-like. Spores 11–15(17) x 5–8 μm in size, smooth, sepia-coloured to purple-brown, elliptic-ovate or elliptical in shape, rounded at one end with a thin epispore.

Habitat and distribution The species is endemic to New Zealand, and is fairly abundant in the early winter and spring months in lowland mixed rainforest near Wellington and Auckland. The mushroom can be difficult to see, often buried under leaves or eaten by slugs, and it is sometimes hard to find mature specimens that are not partially eaten. The species is typically found on decaying wood buried in forest leaf litter (either solitary or crowded), often on the rotting branches of māhoe (Melicytus ramiflorus). It has also been found fruiting on rotted cabbage trees (Cordyline australis) and associated with decaying tree-fern fronds, native to the forests of New Zealand.

Similar species

Clavogaster virescens is similar in appearance and habitat, but the gleba form a reddish brown chambered mass enclosed inside a sack-like structure within the peridium. The stem is stout, smooth and slippery rather than fibrous, off-white to yellow, enlarged at the top where it often smoothly transitions into the pouch, and tapering towards a yellower base. The fungus does not have a bluing reaction; it is naturally blue to greenish blue, and has no psychoactive properties.

Ecology A hypothesis for the species' development of pouches is that it evolved as a strategy to be eaten by the flightless extinct moa, disguising the fruitbodies of the fungus as fallen berries, in order for the spores to be disbursed into new areas.

Gallery

References

Illustrations

Worked examples

Example 1 — a first encounter with Psilocybe weraroa

Start with the simplest possible case. Write down what Psilocybe weraroa 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 Psilocybe weraroa 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 Psilocybe weraroa 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 Psilocybe weraroa

In research: Psilocybe weraroa 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 Psilocybe weraroa 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: Psilocybe weraroa is common in secondary-school and first-year university syllabi. It links to neighbouring topics Endemic biota of New Zealand, Entheogens, Fungi described in 1924, so understanding it makes those chapters shorter.
In everyday life: Look for Psilocybe weraroa 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 “Psilocybe weraroa” →

Affiliate

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

How to study Psilocybe weraroa in 20 minutes

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

Frequently asked questions

What is Psilocybe weraroa in simple terms?

Why does Psilocybe weraroa 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 Psilocybe weraroa?

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 Psilocybe weraroa.