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Longan

tropical tree species that produces edible fruit

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionSep 15, 2026
Entity authorityQ193449
Source-derived summary

Longan (; Dimocarpus longan), also called lungan or dragon's eye, is a tropical tree species that produces edible fruit. It is one of the better-known tropical members of the soapberry family Sapindaceae, to which the lychee and rambutan also belong. The fruit of the longan is similar to lychee, but has a milder, and more subtle aroma and sweetness. The species is native to Southeast Asia and southern China. Today, China, Thailand, and Vietnam are the largest producers of longan fruit, together accounting for approximately 95% of global production.

Etymology

The word Longan is derived from simplified Chinese: 龙眼; traditional Chinese: 龍眼; pinyin: lóngyǎn; Cantonese Yale: lung4 ngaan5. The character 龙 means "dragon" while 眼 means "eye", so together 龙眼 literally means "dragon eye". It is named this way as the black seed within the fruit is said to resemble the eyeball of a Loong. In Vietnamese, it is often called nhãn, which is a Sino-Vietnamese word derived from the Chinese character 眼 (“eye”), but typically dropping the Loong ("dragon") part in everyday usage.

Description

Depending upon climate and soil type the tree may grow to over 30 metres (100 ft) in height, but it typically stands 9–12 m (30–40 ft) in height and the crown is round.

Editorial summary

“Longan” enters the record as tropical tree species that produces edible fruit. Crown Archives preserves that source wording while asking what Longan, tropical and tree can confirm, complicate or overturn.

Editorial reviewUseful for establishing the present vocabulary of the subject while preserving a route back to the evidence on which that vocabulary rests. The current 208-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The selected authority fields contribute no independent date. Its strongest next move is a source search built around Longan, tropical and tree.
Editorial analysis

Why this record matters

“Longan” is worth following because a concise public description often conceals a longer documentary argument. Here, Longan, tropical and tree provides the most credible route into that argument.

Evidence profile

Stable identifiers, scientific names and standards terminology offer the best bridge between this overview and specialist evidence. The source revision retrieved here is dated Sep 15, 2026. The linked authority identifier is Q193449. None of the 0 selected statements returned an explicit reference.

Critical limits

Current terminology should not be projected backward without checking the classification used when the underlying evidence was created. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

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Source & attribution

This entry incorporates text from Longan” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.