Quercus canbyi
{{Short description|Species of tree}}
{{Speciesbox
| image = Quercus canbyi x Q. xalapensis in Hackfalls Arboretum (2).jpg
| image_caption = Quercus canbyi x Q. xalapensis hybrid in Hackfalls Arboretum
| status = LC
| status_system = IUCN3.1
| genus = Quercus
| display_parents = 2
| parent = Quercus sect. Lobatae
| species = canbyi
| authority = Trel.
| synonyms = {{species list
|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.{{cite web |title=Quercus canbyi Trel. {{!}} Plants of the World Online {{!}} Kew Science |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:215619-2 |website=Plants of the World Online |access-date=28 February 2023 |language=en}}
Description
Quercus canbyi is a semi-evergreen - evergreen tree,Harrison L. Flint {{google books|Q1_fAywb_bkC|Landscape Plants for Eastern North America: Exclusive of Florida and the Immediate Gulf Coast (1997)|page=533}} up to {{convert|40|-|50|ft|m|abbr=off}} tall in cultivation. Although, it can reach up to {{convert|80|ft|m|abbr=off}} in the wild in Mexico. It starts as a pyramidal form and then matures into an open irregular shape.{{cite web |title=Quercus canbyi (Chisos Oak, Graceful Oak, Oaks, Sierra Oak, Slender Oak) {{!}} North Carolina Extension Gardener Plant Toolbox |url=https://plants.ces.ncsu.edu/plants/quercus-canbyi/ |website=plants.ces.ncsu.edu |access-date=17 August 2022}} It can reach a spread of {{convert|30|-|40|ft|m|abbr=off}} wide.Howard Garrett {{google books|gHsqVTeFXPwC|Plants for Houston and the Gulf Coast (2010)|page=59}}
The dark, glossy green leaves are {{convert|6|-|8|in|cm|abbr=off}} long and have serrated edges. The petioles can have a reddish hue.{{cite web |title=Quercus canbyi (Canby Oak, Sierra Oak) |url=https://mswn.com/plants/quercus-canbyi-canby-oak/ |website=Mountain States Wholesale Nursery |access-date=17 August 2022}} It blooms in March and the acorns are then seen in August.{{cite web |title=Quercus canbyi - Trees and Shrubs Online |url=https://treesandshrubsonline.org/articles/quercus/quercus-canbyi/ |website=treesandshrubsonline.org |access-date=17 August 2022}}A. Michael Powell {{google books|dgm6yecY5D8C|Grasses of the Trans-Pecos and Adjacent Areas (1994)|page=94}}
It has been distinguished from Quercus graciliformis by its twig shape and by producing acorns biennially rather than annually;Jackie M. Poole, William R. Carr and Dana M. Price {{google books|pM-UVgc-BDkC|Rare Plants of Texas: A Field Guide (2007)|page=421}} however {{as of|2023|February|lc=yes}}, Plants of the World Online regards them as synonymous.
Taxonomy
Quercus canbyi was first described by William Trelease in 1924. It is placed in Quercus section Lobatae.{{Cite journal |last1=Denk |first1=Thomas |last2=Grimm |first2=Guido W. |last3=Manos |first3=Paul S. |last4=Deng |first4=Min |last5=Hipp |first5=Andrew L. |date=2017 |title=Appendix 2.1: An updated infrageneric classification of the oaks |website=figshare |doi=10.6084/m9.figshare.5547622.v1 |url=https://figshare.com/articles/dataset/Appendix_2_1_________An_updated_infrageneric_classification_of_the_oaks/5547622/1 |access-date=24 February 2023 |format=xls |name-list-style=amp }}
Distribution
Conservation
Quercus canbyi was assessed in 2016 for the IUCN Red List as "least concern". Quercus graciliformis, regarded as a synonym by Plants of the World Online, was assessed as "critically endangered" in 2016.{{cite iucn |author=Beckman, E. |date=2017 |title=Quercus graciliformis |volume=2017 |page=e.T30954A63729730 |doi=10.2305/IUCN.UK.2017-2.RLTS.T30954A63729730.en |access-date=16 November 2021}}
Cultivation
Quercus canbyi will tolerate most kinds of soils and is used in gardens to provide shade.Howard Garrett {{google books|YYpbPlltV_sC|Texas Gardening the Natural Way: The Complete Handbook (2010)|page=377}}
References
{{Reflist}}
{{Commons category-inline|Quercus canbyi}}
{{Taxonbar|from1=Q6323318|from2=Q3006265}}
Category:Trees of Northern America
Category:Flora of the Sierra Madre Oriental