biology

Ulmus lamellosa

Ulmus lamellosa 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 lamellosa rather than just read about it. In short: Ulmus lamellosa, commonly called the Hebei elm, is a small deciduous tree native to four Chinese provinces, Hebei, Henan, Nei Mongol, and Shanxi, to the west and south of Beijing. Description A slow growing tree rarely exceeding 10 m in height, U. lamellosa is often multi-stemmed, its upright branches forming a rounded crown, but occasionally forms a single, slender trunk < 20 cm d.b.h.

Key takeaways

Ulmus lamellosa 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 lamellosa to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Ulmus lamellosa from memory before moving on to harder problems.

Reference excerpt

Ulmus lamellosa, commonly called the Hebei elm, is a small deciduous tree native to four Chinese provinces, Hebei, Henan, Nei Mongol, and Shanxi, to the west and south of Beijing.

Description A slow growing tree rarely exceeding 10 m in height, U. lamellosa is often multi-stemmed, its upright branches forming a rounded crown, but occasionally forms a single, slender trunk < 20 cm d.b.h. Considered closely related to the Large-fruited Elm U. macrocarpa, it is distinguishable from that species by its mottled, flaking bark and smaller leaves. The leaves, on 3–8 mm petioles, are obovate, < 10 cm long by 5.5 cm wide, caudate at the apex, with simply to doubly serrate margins, and densely pubescent when young; the leaves turn a rich gold in autumn. The perfect wind-pollinated apetalous flowers are produced on second-year shoots in March–April; the large < 35 mm diameter samarae appear from April to May.

Pests and diseases In the trials at the Morton Arboretum, Illinois, U. lamellosa was found to have a good resistance to Dutch elm disease. The species was also found to be among the least suitable elms for feeding and reproduction by the Japanese beetle Popillia japonica in the United States.

Cultivation Rare in cultivation beyond China, it is one of a number of Chinese species which were assessed for their horticultural merit at the Morton Arboretum, where it was adjudged suitable for planting in parks and gardens, but found to be typically intolerant of wet soils. Although known to propagate satisfactorily, U. lamellosa is only very rarely found in commerce in Europe and the United States; there are no known cultivars.

Accessions North America Brenton Arboretum, US. No accession details available. Denver Botanic Gardens US. No details available Holden Arboretum US. Acc. no. 96–178, provenance unrecorded Morton Arboretum US. Acc. nos. 317–90, 51–95, 655–2006, (listed as syn. U. taihangshanensis): 446–2007. University of British Columbia Botanical Garden, Vancouver, British Columbia, Canada. Acc. no. 022715-0334-1983. United States National Arboretum, Washington, D.C., US. Acc. nos. 68993, 68994, 76228. Also, listed under syn. U. taihangshanensis: 76237, 76245, 68981. Europe Botanical Garden Kerkrade [4], Kerkrade, Netherlands. One large tree; accession 1983BG03409 height 9,40 m, planted 1985, seed from hortus botanicus Pekinensis. Calderstones Park, Liverpool, UK. 3 mature trees by Menlove Avenue wall. Grange Farm Arboretum, Lincolnshire, UK. Acc. no. 702. RBG Edinburgh, Benmore, UK. Acc. no. 19951216. Wild collected in Yunnan province, China by Sino-Scottish Expedition. Royal Horticultural Society gardens, Wisley, UK. Bed WA 0201; (planted 1998, the tree appeared to have succumbed to the drought of summer 2006, and all top growth had died save a few suckers at the base). Strona Arboretum, University of Life Sciences, Warsaw, Poland. Wijdemeren City Council, Netherlands. Five trees planted 2018 Zodde, Oud-Loosdrecht and Berestein Cemetery, 's-Graveland. View: https://wijdemeren.cobra360.nl/index.php?@iepen

References

Further reading Ru, W.; Bi, R.; Zhang, F.; Zhang, J. (2007). "Population Structure and Pattern of Endangered Ulmus lamellosa in Shanxi". Chinese Journal of Applied & Environmental Biology. 1: 2007.

External links efloras.org: U. lamellosa description efloras.org: U. lamellosa fruit, new leaves and bark illustration (figures 1 to 3) Photographs labelled U. lamellosa on Plant Photo Bank of China, ppbc.iplant

Illustrations

Worked examples

Example 1 — a first encounter with Ulmus lamellosa

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

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

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

Frequently asked questions

What is Ulmus lamellosa in simple terms?

Ulmus lamellosa, commonly called the Hebei elm, is a small deciduous tree native to four Chinese provinces, Hebei, Henan, Nei Mongol, and Shanxi, to the west and south of Beijing. Description A slow growing tree rarely exceeding 10 m in height, U. lamellosa is often multi-stemmed, its upright branc…

Why does Ulmus lamellosa 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 lamellosa?

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 lamellosa.