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Quercus canbyi

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(Redirected from Quercus graciliformis)

Quercus canbyi
Quercus canbyi x Q. xalapensis hybrid in Hackfalls Arboretum
Scientific classification Edit this classification
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. canbyi
Binomial name
Quercus canbyi
Synonyms[2]
  • Quercus alamarensis C.H.Mull.
  • Quercus canbyi f. ascendens Trel.
  • Quercus canbyi f. attenuata C.H.Mull.
  • Quercus canbyi f. berlandieri Trel.
  • Quercus canbyi f. concolor Trel. & C.H.Müll.
  • Quercus canbyi f. karwinskii (Trel.) C.H.Mull.
  • Quercus canbyi f. pedunculata C.H.Mull.
  • Quercus canbyi f. setacea C.H.Mull.
  • Quercus canbyi f. subovatifolia C.H.Mull.
  • Quercus graciliformis C.H.Mull.
  • Quercus graciliformis f. parvilobata (C.H.Mull.) C.H.Mull.
  • Quercus graciliformis var. parvilobata C.H.Mull.
  • Quercus graciliramis C.H.Mull.
  • Quercus karwinskii Trel.

Quercus canbyi (Canby oak, Sierra oak), synonyms including Quercus graciliformis, is a North American species of oak tree.[2]

Description

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Quercus canbyi is a semi-evergreen - evergreen tree,[3] up to 40–50 feet (12–15 metres) tall in cultivation. Although, it can reach up to 80 feet (24 metres) in the wild in Mexico. It starts as a pyramidal form and then matures into an open irregular shape.[4] It can reach a spread of 30–40 feet (9.1–12.2 metres) wide.[5]

The dark, glossy green leaves are 6–8 inches (15–20 centimetres) long and have serrated edges. The petioles can have a reddish hue.[6] It blooms in March and the acorns are then seen in August.[7][8]

It has been distinguished from Quercus graciliformis by its twig shape and by producing acorns biennially rather than annually;[9] however as of February 2023, Plants of the World Online regards them as synonymous.[2]

Taxonomy

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Quercus canbyi was first described by William Trelease in 1924.[2] It is placed in Quercus section Lobatae.[10]

Distribution

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The species has been found only in Texas and in northeast Mexico.[2][11]

Conservation

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Quercus canbyi was assessed in 2016 for the IUCN Red List as "least concern".[1] Quercus graciliformis, regarded as a synonym by Plants of the World Online, was assessed as "critically endangered" in 2016.[12]

Cultivation

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Quercus canbyi will tolerate most kinds of soils and is used in gardens to provide shade.[13]

References

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  1. ^ a b Jerome, D.; Beckman, E. (2018). "Quercus canbyi". IUCN Red List of Threatened Species. 2018: e.T78809316A78809335. doi:10.2305/IUCN.UK.2018-2.RLTS.T78809316A78809335.en. Retrieved 17 August 2022.
  2. ^ a b c d e "Quercus canbyi Trel. | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 28 February 2023.
  3. ^ Harrison L. Flint Landscape Plants for Eastern North America: Exclusive of Florida and the Immediate Gulf Coast (1997), p. 533, at Google Books
  4. ^ "Quercus canbyi (Chisos Oak, Graceful Oak, Oaks, Sierra Oak, Slender Oak) | North Carolina Extension Gardener Plant Toolbox". plants.ces.ncsu.edu. Retrieved 17 August 2022.
  5. ^ Howard Garrett Plants for Houston and the Gulf Coast (2010), p. 59, at Google Books
  6. ^ "Quercus canbyi (Canby Oak, Sierra Oak)". Mountain States Wholesale Nursery. Retrieved 17 August 2022.
  7. ^ "Quercus canbyi - Trees and Shrubs Online". treesandshrubsonline.org. Retrieved 17 August 2022.
  8. ^ A. Michael Powell Grasses of the Trans-Pecos and Adjacent Areas (1994), p. 94, at Google Books
  9. ^ Jackie M. Poole, William R. Carr and Dana M. Price Rare Plants of Texas: A Field Guide (2007), p. 421, at Google Books
  10. ^ Denk, Thomas; Grimm, Guido W.; Manos, Paul S.; Deng, Min & Hipp, Andrew L. (2017). "Appendix 2.1: An updated infrageneric classification of the oaks" (xls). figshare. doi:10.6084/m9.figshare.5547622.v1. Retrieved 24 February 2023.
  11. ^ "SelecTree: A Tree Selection Guide". selectree.calpoly.edu. Retrieved 17 August 2022.
  12. ^ Beckman, E. (2017). "Quercus graciliformis". IUCN Red List of Threatened Species. 2017: e.T30954A63729730. doi:10.2305/IUCN.UK.2017-2.RLTS.T30954A63729730.en. Retrieved 16 November 2021.
  13. ^ Howard Garrett Texas Gardening the Natural Way: The Complete Handbook (2010), p. 377, at Google Books

Media related to Quercus canbyi at Wikimedia Commons