biology

Ulmus elongata

Ulmus elongata 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 Ulmus elongata rather than just read about it. In short: Ulmus elongata, also known as the long raceme elm in the US, is a deciduous tree endemic to broadleaf forests in the eastern provinces of China. Description The tree grows to a height of < 30 m and trunk < 0.8 m d.b.h.

Key takeaways

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

Reference excerpt

Ulmus elongata, also known as the long raceme elm in the US, is a deciduous tree endemic to broadleaf forests in the eastern provinces of China.

Description The tree grows to a height of < 30 m and trunk < 0.8 m d.b.h. The bark is a brownish grey, and exfoliates in flakes. The coarse leaves are < 20 cm long, narrowly elliptic with an acuminate apex and borne on twigs that occasionally feature corky wings. The wind-pollinated apetalous flowers appear on the second-year twigs in February. The samarae are distinctively shuttle-shaped, < 25 mm in length, on stalks < 22 mm long, and appear in March.

Pests and diseases No information available.

Cultivation The species was virtually unknown in the West until it was introduced to the Morton Arboretum, Illinois, in the 1990s as part of an evaluation of Chinese elms for landscape use. [2]. Some of the seedlings raised at the Morton Arboretum were donated to the U S National Arboretum (USNA) in Washington, where two have prospered. The species is not known (2018) in Europe or Australasia. U. elongata is not known to be in commerce, and there are no known cultivars.

Accessions

North America United States National Arboretum, Washington, D.C., US. Two trees, germinated at the Morton Arboretum from seed sent from China. Acc. nos. 68995, 55393. Morton Arboretum, US. Two clonally propagated trees. Acc. no. 196-2011

References

Further reading Gao, J. G., G. D. Xu, and W. Q. Li. "Qiu z J, Liu P. Preliminary studies on photosynthetic characteristics of endangered plant Ulmus elongata seedlings." Ecology and Environment Sciences 20.1 (2011): 66–71. Jiang, Yan-sheng. "The Study on Natural Regeneration of Ulmus elongata [J]." Journal of Fujian Forestry Science and Technology 4 (2003). Lai, W. (2001). The Height Growth of Ulmus elongata Seedlings and Its Correlations with Climatic Factors. Journal of Fujian College of Forestry 2001-02. Lai, W. S. "Study on annual growth dynamics of one-year-old seedlings for Ulmus elongata." Journal of Nanjing Forestry University: Natural Science Edition 25.4 (2001): 57–60. Lai, W., G. Zou, and J. Zhang. "Influence of the different densities on the growth of Ulmus elongata seedlings, J." Fujian For. Sci. Technol 28.2 (2001): 74–80. Lai, W. S. "The study on cuttings propagation of Ulmus elongata." China Forestry Science and Technology 14.6 (2000): 32–33. Tian, Y., et al. "The studies on reproductive characteristics of Ulmus elongata." Journal of Hebei Forestry University 11.S1 (1996): 25–29. Zhang, J., Chen, Q., Lai, W. (1993). Studies on the Growth Rhythm of Ulmus elongata seedlings. Journal of Fujian Forestry Science and Technology 1993–03.

External links An introduction of Ulmus elongata (长序榆简介) efloras.org: U. elongata description efloras.org: U. elongata leaves, fruit and bark illustration Photographs labelled U. elongata on Plant Photo Bank of China, ppbc.iplant

Illustrations

Worked examples

Example 1 — a first encounter with Ulmus elongata

Start with the simplest possible case. Write down what Ulmus elongata 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 Ulmus elongata 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 Ulmus elongata 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 Ulmus elongata

In research: Ulmus elongata 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 Ulmus elongata 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: Ulmus elongata is common in secondary-school and first-year university syllabi. It links to neighbouring topics Elm species and varieties, Flora of China, IUCN Red List vulnerable species, so understanding it makes those chapters shorter.
In everyday life: Look for Ulmus elongata 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 Ulmus elongata in 20 minutes

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

Frequently asked questions

What is Ulmus elongata in simple terms?

Ulmus elongata, also known as the long raceme elm in the US, is a deciduous tree endemic to broadleaf forests in the eastern provinces of China. Description The tree grows to a height of < 30 m and trunk < 0.8 m d.b.h.

Why does Ulmus elongata 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 Ulmus elongata?

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 Ulmus elongata.