biology

Pitcairnia subg. Pepinia

Pitcairnia subg. Pepinia 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 Pitcairnia subg. Pepinia rather than just read about it. In short: Pitcairnia subg. Pepinia is a subgenus of plants in the family Bromeliaceae.

Key takeaways

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

Reference excerpt

Pitcairnia subg. Pepinia is a subgenus of plants in the family Bromeliaceae. It has at times been treated as the separate genus Pepinia, but is now included again in the genus Pitcairnia. The name is for Pierre Denis Pépin, French member of the Imperial and Central Society of Agriculture (c.1802-1876).

Taxonomy Pepinia was established as a genus in 1870 by Adolphe-Théodore Brongniart in a publication by Édouard André. Pepinia was reduced to a subgenus of Pitcairnia in 1881 by John Gilbert Baker, but elevated again to a genus in 1988, largely on the basis of the morphology of its seeds. The use of morphological characters to differentiate Pepinia from Pitcairnia was rejected in 1999; a view later confirmed by multiple molecular studies.

Selected species Species that have been placed in Pepinia and are now placed in Pitcairnia subg. Pepinia include:

Pepinia agavifolia (L.B.Sm.) G.S.Varad. & Gilmartin = Pitcairnia agavifolia Pepinia alborubra (Baker) G.S.Varad. & Gilmartin = Pitcairnia alborubra Pepinia alexanderi H.Luther = Pitcairnia alexanderi Pepinia amblyosperma (L.B.Sm.) G.S.Varad. & Gilmartin = Pitcairnia amblyosperma Pepinia aphelandriflora (Lemaire) André = Pitcairnia aphelandriflora Pepinia armata (Maury) G.S.Varad. & Gilmartin = Pitcairnia armata Pepinia beachiae (J. Utley & Burt-Utley) H.Luther = Pitcairnia beachiae Pepinia bulbosa (L.B.Sm.) G.S.Varad. & Gilmartin = Pitcairnia bulbosa Pepinia caricifolia (Martius ex Schultes f.) G.S.Varad. & Gilmartin = Pitcairnia caricifolia Pepinia carnososepala (Rauh & E. Gross) H.Luther = Pitcairnia carnososepala Pepinia corallina (Linden & André) G.S.Varad. & Gilmartin = Pitcairnia corallina Pepinia ctenophylla (L.B.Sm.) G.S.Varad. & Gilmartin = Pitcairnia ctenophylla Pepinia cuatrecasasiana (L.B.Sm.) G.S.Varad. & Gilmartin = Pitcairnia cuatrecasasiana Pepinia epiphytica (L.B.Sm.) G.S.Varad. & Gilmartin = Pitcairnia epiphytica Pepinia filispina (L.B.Sm.) G.S.Varad. & Gilmartin = Pitcairnia filispina Pepinia fulgens H.Luther = Pitcairnia harrylutheri Pepinia harlingii (L.B.Sm.) G.S.Varad. & Gilmartin = Pitcairnia harlingii Pepinia hooveri H.Luther = Pitcairnia hooveri Pepinia juncoides (L.B.Sm.) G.S.Varad. & Gilmartin = Pitcairnia juncoides Pepinia kunhardtiana (L.B.Sm.) G.S.Varad. & Gilmartin = Pitcairnia kunhardtiana Pepinia leopoldii W.Till & S.Till = Pitcairnia leopoldii Pepinia maguirei (L.B.Sm.) G.S.Varad. & Gilmartin = Pitcairnia maguirei Pepinia patentiflora (L.B.Sm.) G.S.Varad. & Gilmartin = Pitcairnia patentiflora Pepinia pruinosa Kunth = Pitcairnia pruinosa Pepinia punicea (Scheidweiler) Brongniart ex André = Pitcairnia punicea Pepinia rubiginosa (Baker) G.S.Varad. & Gilmartin = Pitcairnia rubiginosa Pepinia sanguinea H.Luther = Pitcairnia sanguinea Pepinia turbinella (L.B.Sm.) G.S.Varad. & Gilmartin = Pitcairnia turbinella Pepinia uaupensis (Baker) G.S.Varad. & Gilmartin = Pitcairnia uaupensis Pepinia verrucosa E. Gross = Pitcairnia elvirae

References

External links BSI Genera Gallery photos

Illustrations

Worked examples

Example 1 — a first encounter with Pitcairnia subg. Pepinia

Start with the simplest possible case. Write down what Pitcairnia subg. Pepinia 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 Pitcairnia subg. Pepinia 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 Pitcairnia subg. Pepinia 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 Pitcairnia subg. Pepinia

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

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

Frequently asked questions

What is Pitcairnia subg. Pepinia in simple terms?

Pitcairnia subg. Pepinia is a subgenus of plants in the family Bromeliaceae.

Why does Pitcairnia subg. Pepinia 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 Pitcairnia subg. Pepinia?

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 Pitcairnia subg. Pepinia.