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Quercus tardifolia, the Chisos Mountains oak or lateleaf oak, is a rare North American species of oak. It has been found in the Chisos Mountains inside Big Bend National Park in Texas, and in the nearby Sierra del Carmen across the Río Grande in northern Coahuila.[2][3]

Quercus tardifolia
Conservation status
Data Deficient  (IUCN 3.1)[1]
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. Lobatae
Species:	Q. tardifolia
Binomial name
Quercus tardifolia C.H.Muller

Quercus tardifolia is an evergreen tree with gray bark and reddish-brown twigs. The leaves are flat, up to 10 centimetres (4 inches) long, green on the upper surface and with woolly hairs on the underside, with a few shallow lobes.[3]

Conservation

This species was thought to be extinct, however in May 25, 2022 a remaining specimen was found.[4]

Etymology

The common name Chisos Mountains oak refers to the Chisos Mountains range where the species was discovered.

References

External links

• Wildscreen Arkive, Chisos Mountains oak (Quercus tardifolia) — photo of herbarium specimen.
• Conabio Naturalista, Quercus tardifolia — photo of live specimen.

На других языках

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[de] Quercus tardifolia

Quercus tardifolia (englische Trivialnamen: Chisos Mountains oak oder Lateleaf oak) ist eine extrem seltene Pflanzenart aus der Gattung der Eichen innerhalb der Familie der Buchengewächse (Fagaceae). Mit nur einem bekannten wildlebenden Exemplar gehört sie zu den seltensten Bäumen der Welt.

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- [en] Quercus tardifolia

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