Quercus obtusata

Quercus obtusata
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Fagales
Family:	Fagaceae
Genus:	Quercus
Subgenus:	Quercus subg. Quercus
Section:	Quercus sect. Quercus
Species:	Q. obtusata
Binomial name
	Quercus obtusata; Bonpl.
Synonyms
	List Quercus alvarezensis Trel. ; Quercus atriglans E.F.Warb. ; Quercus crenatifolia Trel. ; Quercus hartwegii Benth. ; Quercus hartwegii f. glabrata Trel. ; Quercus obtusata var. hartwegii (Benth.) A.DC. ; Quercus obtusata var. pandurata (Bonpl.) A.DC. ; Quercus pandurata Bonpl. ; Quercus pandurata var. hartwegii (Benth.) Wenz. ; Quercus panduriformis Trel. ; Quercus panduriformis f. colimensis Trel. ; Quercus panduriformis f. rubrinervis Trel. ; Quercus spicata Bonpl. ;

Quercus obtusata is an oak in the white oak group (Quercus sect. Quercus) endemic to Mexico, with a distribution ranging from San Luis Potosí and Nayarit south to Oaxaca, from 620 to 2800 MSL^[2]^[3]

Quercus obtusata is a tree up to 20 meters tall with a trunk sometimes more than 60 cm in diameter. Leaves are thick and leathery, up to 22 cm long, widely egg-shaped with 3-9 pairs of shallow rounded lobes or undulations.^[3]^[4]^[5]

Resembles Q. potosina which has smaller leaves (3-10 x 2-6 cm); resembles too Q. rugosa, this one has a convex leaf strongly coriaceous, a revolute margin, the epidermis bullate; at least, one can differentiate Q. obtusata from Q. laeta which has foliar underside glaucous, without masses of glandular secretions, none or rare glandular trichomes, a leaf more oblong than oboval with a margin sometimes entire. [1]

References[]

^ "Quercus obtusata Bonpl.". World Checklist of Selected Plant Families (WCSP). Royal Botanic Gardens, Kew – via The Plant List.
^ McVaugh, R. 1974. Flora Novo-Galiciana: Fagaceae. Contributions from the University of Michigan Herbarium 12(1,3): 1–93
^ ^a ^b Romero Rangel, S., E. C. Rojas Zenteno & M. L. Aguilar Enríquez. 2002. El género Quercus (Fagaceae) en el estado de México. Annals of the Missouri Botanical Garden 89(4): 551–593 in Spanish, with line drawings of each species
^ Bonpland, Aimé Jacques Alexandre. 1809. Plantae Aequinoctiales 2: 26-27 diagnosis in Latin, description and commentary in French
^ Bonpland, Aimé Jacques Alexandre. 1809. Plantae Aequinoctiales 2: plate 76 drawing of Quercus obtusata

External links[]

photo of herbarium specimen at Missouri Botanical Garden, collected in México State in 1934

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[1] "Quercus obtusata Bonpl.". World Checklist of Selected Plant Families (WCSP). Royal Botanic Gardens, Kew – via The Plant List.

[2] McVaugh, R. 1974. Flora Novo-Galiciana: Fagaceae. Contributions from the University of Michigan Herbarium 12(1,3): 1–93

[evangelina-3] Romero Rangel, S., E. C. Rojas Zenteno & M. L. Aguilar Enríquez. 2002. El género Quercus (Fagaceae) en el estado de México. Annals of the Missouri Botanical Garden 89(4): 551–593 in Spanish, with line drawings of each species

[4] Bonpland, Aimé Jacques Alexandre. 1809. Plantae Aequinoctiales 2: 26-27 diagnosis in Latin, description and commentary in French

[5] Bonpland, Aimé Jacques Alexandre. 1809. Plantae Aequinoctiales 2: plate 76 drawing of Quercus obtusata

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