biology

Halogeton

Halogeton 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 Halogeton rather than just read about it. In short: Halogeton is a plant genus of the family Amaranthaceae. The genus name, Halogeton, derives from the Greek words for "salt" and for "neighbor." Description The genus Halogeton includes both annual and perennial species.

Key takeaways

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

Reference excerpt

Halogeton is a plant genus of the family Amaranthaceae. The genus name, Halogeton, derives from the Greek words for "salt" and for "neighbor."

Description The genus Halogeton includes both annual and perennial species. The leaves are fleshy cylindrical, terminating in a persistent or caducous bristle. There are three to several flowers in the axil of each floral leaf. The perianth segments are membranous. The stamens are fixed on a papillose staminodial disk. In fruit, the tepals develop five wings.

Distribution and habitat The annual species grow in temperate salines and ruderal places, while the perennials are found in warm and hot deserts. They are tolerant of fairly saline soils.

Uses Halogeton sativus was cultivated for the enormous 18th Century barilla industry in Spain that produced soda ash. The species was considered to be a "saltwort" plant.

Weeds Halogeton glomeratus is considered a noxious weed in most regions of the United States; a particular difficulty with H. glomeratus is that it is poisonous to sheep, and possibly to cattle, due to the high concentration of sodium oxalate in the dry plant. The common names for H. glomeratus include halogeton (the same as the genus), barilla, and saltlover.

Ecology Halogeton species are used as food plants by the larvae of some Lepidoptera species including The Nutmeg and the Coleophora case-bearers C. klimeschiella and C. parthenica.

Systematics The genus Halogeton was published in 1829 by Carl Anton von Meyer (in Ledeb., Icon. Pl. Fl. Ross. 1: 10), with the type species Halogeton glomeratus (M. Bieb.) C.A.Mey. Synonyms are Agathophora (Fenzl) Bunge and Micropeplis Bunge. The genus includes about 5 species:

Halogeton alopecuroides (Delile) Moq. Halogeton arachnoideus Moq. Halogeton glomeratus (M. Bieb.) C. A. Mey. Halogeton sativus (L.) Moq., Synonym Salsola sativa L. Halogeton tibeticus Bunge (Bunge 1862; Botschantzev 1977).

References

Hossein Akhani, Gerald Edwards, Eric H. Roalson:Diversification Of The Old World Salsoleae S.L. (Chenopodiaceae): Molecular Phylogenetic Analysis Of Nuclear And Chloroplast Data Sets And A Revised Classification In: International Journal of Plant Sciences, 168(6), p. 942 and 945-946, 2007. (chapters Description, Habitat, Systematics)

Illustrations

Worked examples

Example 1 — a first encounter with Halogeton

Start with the simplest possible case. Write down what Halogeton 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 Halogeton 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 Halogeton 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 Halogeton

In research: Halogeton 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 Halogeton 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: Halogeton is common in secondary-school and first-year university syllabi. It links to neighbouring topics Amaranthaceae, Amaranthaceae genera, Barilla plants, so understanding it makes those chapters shorter.
In everyday life: Look for Halogeton 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 Halogeton in 20 minutes

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

Frequently asked questions

What is Halogeton in simple terms?

Halogeton is a plant genus of the family Amaranthaceae. The genus name, Halogeton, derives from the Greek words for "salt" and for "neighbor." Description The genus Halogeton includes both annual and perennial species.

Why does Halogeton 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 Halogeton?

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 Halogeton.