Quercus hemisphaerica

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Quercus hemisphaerica
Quercus hemisphaerica.gif
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fagales
Family: Fagaceae
Genus: Quercus
Subgenus: Quercus subg. Quercus
Section: Quercus sect. Lobatae
Species:
Q. hemisphaerica
Binomial name
Quercus hemisphaerica
Laureloakmap.PNG
Synonyms [2]
List
  • Dryopsila maritima(Michx.) Raf.
  • Quercus geminata f. maritima(Michx.) Trel.
  • Quercus hemisphaerica var. maritima(Michx.) C.H.Mull.
  • Quercus laurifolia var. maritima(Michx.) A.E.Murray
  • Quercus laurifolia subsp. maritima(Michx.) A.E.Murray
  • Quercus maritimaRaf.
  • Quercus maritima(Michx.) Willd.
  • Quercus nigra f. hemisphaerica(Bartram ex Willd.) Trel.
  • Quercus phellos var. maritimaMichx.
  • Quercus virens var. maritima(Michx.) Chapm.
  • Quercus virginiana var. maritima(Michx.) Sarg.

Quercus hemisphaerica (sand laurel oak, laurel oak, Darlington oak, laurel-leaf oak) is a species of oak native to the southeastern and south-central United States. It is in the red oak section of Quercus sect. Lobatae. It is often confused with and closely related to Quercus laurifolia (swamp laurel oak), from which it differs in several key characteristics.

Contents

Description

Quercus hemisphaerica is a medium-sized evergreen to semi-evergreen tree which can grow as tall as 35 meters (115 feet) with a trunk diameter of 1.5 m (5 ft), although it is more commonly around 18–20 m (59–66 ft) tall. The leaves are entire, without teeth except one apical awn (rarely with a few teeth near the apex), mostly elliptical or narrowly ovate, and 3–12 centimeters (1+184+34 inches) long by 1–4 cm (381+58 in) wide. The petiole is very short, ranging from 1–5 millimeters (116316 in) long, and the leaf base is obtuse to rounded. The acorns are hemispheric in shape and 9 to 16.5 mm (38 to 58 in) by 9 to 16.5 mm (38 to 58 in). The acorns take 18 months to mature and are a fourth to a third covered by a saucer- to bowl-shaped cap. [3]

Similar species

Q. hemisphaerica resembles Quercus laurifolia (swamp laurel oak). They can be distinguished using these criteria.

Distribution and habitat

The tree can be found from Texas to Delaware. [4]

It grows in somewhat xeric sandy soils, on sand hills, and sometimes on hillsides.

Ecology

There is at least one known hybrid involving Q. hemisphaerica which is with Q. laevis (Q. × mellichampii Trel.).

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References

  1. Wenzell , K.; Kenny, L. (2015). "Quercus hemisphaerica". IUCN Red List of Threatened Species . 2015: e.T194137A2302375. doi: 10.2305/IUCN.UK.2015-4.RLTS.T194137A2302375.en . Retrieved 12 November 2021.
  2. The Plant List, Quercus hemisphaerica Bartram ex Willd.
  3. Flora of North America: Laurel Oak
  4. Biota of North America Program 2014 county distribution map