biology

Lecanorchis

Lecanorchis 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 Lecanorchis rather than just read about it. In short: Lecanorchis is a genus of orchids (family Orchidaceae) belonging to the subfamily Vanilloideae. The scientific name is derived from the Greek words lekane (basin) and orchis (orchid).

Key takeaways

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

Reference excerpt

Lecanorchis is a genus of orchids (family Orchidaceae) belonging to the subfamily Vanilloideae. The scientific name is derived from the Greek words lekane (basin) and orchis (orchid). They occur in mountain forest of the Himalayas, China, Japan, Korea, Southeast Asia, and New Guinea at altitudes of 300–1,500 metres (980–4,920 ft). They are terrestrial, leafless myco-heterotrophs (formerly called saprophytes). They produce numerous, long, thick, horizontal roots under a short rhizome. The erect, dark, branched or unbranched stems are thin and brittle. They bear few to many dull brown, purple, yellow or green flowers with a somewhat brighter lip. The lip is about of equal length to the sepals and is covered with dense, yellow hair. Characteristics for this species are:

A calyculus, a cup-like structure formed from a group of small bracts, is present. The erect gynostemium (the fused stamen and pistil) is elongate. Lecanorchis is related to Clematepistephium and Eriaxis, both endemic to New Caledonia.

Species Species accepted as of June 2014:

Lecanorchis amethystea Y.Sawa, Fukunaga & S.Sawa (2006) (Japan, Taiwan) Lecanorchis betongensis Suddee & H.A.Pedersen (2011) (Thailand) Lecanorchis bicarinata Schltr. (1922) (New Guinea) Lecanorchis brachycarpa Ohwi. (1938) (Ryukyu Islands and Taiwan) Lecanorchis ciliolata J.J.Sm. (1929) (New Guinea) Lecanorchis flavicans Fukuy. (1942) (Ryukyu Islands)(Status : threatened) Lecanorchis japonica Blume (1856) (Japan, Korea, Taiwan, Fujian, Hunan) Lecanorchis javanica Blume (1856) (Java, Taiwan, Thailand, Vietnam, Malaysia, Philippines, New Guinea) Lecanorchis latens T.P.Lin & W.M.Lin (2011) (Taiwan) Lecanorchis kiusiana Tuyama (1955) (Korea, Japan) Lecanorchis malaccensis Ridl. (1893) (Thailand, Vietnam, Borneo, Malaysia, Sumatra) Lecanorchis multiflora J.J.Sm. (1918) (Thailand, Yunnan, Borneo, Malaysia, Sumatra, Java) Lecanorchis neglecta Schltr. (1911) (New Guinea) Lecanorchis nigricans Honda (1931) (Japan, Taiwan, Fujian, Thailand, Ryukyu Islands) Lecanorchis seidenfadenii Szlach. & Mytnik (2000) (Malaysia) Lecanorchis sikkimensis N.Pearce & P.J.Cribb (1999) (Sikkim, Bhutan) Lecanorchis subpelorica T.C.Hsu & S.W.Chung, (2010) (Taiwan) Lecanorchis suginoana (Tuyama) Seriz. (2005) Lecanorchis thalassica T.P.Lin (1987) (Taiwan) Lecanorchis vietnamica Aver. (2005), Vietnam Lecanorchis virella T.Hashim. (1989) (Japan, Taiwan) A new species, Lecanorchis tabugawaensis was described in 2016.

References

Blume, C. L. von (1856) Museum Botanicum 2: 188. Pridgeon, A.M., Cribb, P.J., Chase, M.C. & Rasmussen, F.N. (2003) Genera Orchidacearum 3: 316 ff. Oxford University Press. Orchid Research Newsletter 47 (January 2006) - Royal Botanical Gardens, Kew. Dariusz L. Szlachetko & Joanna Mytnik - Lecanorchis seidenfadeni (Orchidaceae, Vanilloideae), a new orchid species from Malaya; An.Bot.Fennici 37;227-230 (on line : [1])

External links Data related to Lecanorchis at Wikispecies

Illustrations

Worked examples

Example 1 — a first encounter with Lecanorchis

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

In research: Lecanorchis 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 Lecanorchis 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: Lecanorchis is common in secondary-school and first-year university syllabi. It links to neighbouring topics Myco-heterotrophic orchids, Vanilleae, Vanilloideae genera, so understanding it makes those chapters shorter.
In everyday life: Look for Lecanorchis 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 Lecanorchis in 20 minutes

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

Frequently asked questions

What is Lecanorchis in simple terms?

Lecanorchis is a genus of orchids (family Orchidaceae) belonging to the subfamily Vanilloideae. The scientific name is derived from the Greek words lekane (basin) and orchis (orchid).

Why does Lecanorchis 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 Lecanorchis?

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 Lecanorchis.