| 词条 | Quercus lyrata |
| 释义 |
| name = Overcup oak | image = Quercus lyrata (TVA).jpg | status = LC | status_system = IUCN3.1 | status_ref = [1] | genus = Quercus | display_parents = 2 | parent = Quercus sect. Quercus | species = lyrata | authority = Walter | range_map = Quercus lyrata range map 1.png | synonyms_ref = [2] | synonyms =
}}Quercus lyrata, the overcup oak, is an oak in the white oak group (Quercus sect. Quercus). It is native to lowland wetlands in the eastern and south-central United States, in all the coastal states from New Jersey to Texas, inland as far as Oklahoma, Missouri, and Illinois. There are historical reports of it growing in Iowa, but the species appears to have been extirpated there.[3] DescriptionQuercus lyrata is a medium-sized deciduous tree, growing to {{convert|20|m|ft|abbr=off|sp=us}} tall, with a trunk up to {{convert|80|cm|in|0|abbr=on}} in diameter, or rarely to {{convert|140|cm|in|0|abbr=on}}. The leaves are {{convert|10|–|16|cm|in|frac=4|abbr=on}} long, or rarely to {{convert|20|cm|in|frac=4|abbr=on}}, and {{convert|5|–|10|cm|in|0|abbr=on}} broad, deeply lobed, often somewhat lyre-shaped (lyrate), dark green above, paler and often finely hairy beneath. The flowers are catkins, produced in the spring and maturing in about 6–7 months into acorns {{convert|2.5|–|5|cm|in|frac=8|abbr=on}} long and {{convert|2|–|4|cm|in|frac=4|abbr=on}} broad, largely enclosed by the cupule (acorn cup).[4] The common name comes from the acorns being largely enclosed in the cup; the scientific name comes from the lyrate (lyre-shaped) leaves. The wood is valuable, similar to that of other white oaks, and used for the same purposes. References1. ^{{cite web | url = http://www.iucnredlist.org/details/194190/0 | title = Quercus lyrata | date = 2017 | website = iucnredlist.org | publisher = iucnredlist | access-date = 4 November 2017 | quote = data}} 2. ^{{ThePlantList |id=kew-173795 |taxon=Quercus lyrata |authority=Walter}} 3. ^{{BONAP |genus=Quercus |species=lyrata |date=2014}} 4. ^{{eFloras|1|233501057|Quercus lyrata |first=Kevin C. |last=Nixon |volume=3}} External links
5 : Quercus|Trees of the Eastern United States|Trees of the Southeastern United States|Plants described in 1788|Flora of Arkansas |
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