Chisos Red Oak vs Common Oak

Quercus gravesii compared with Quercus robur

Taxonomic Classification

Rank	Chisos Red Oak	Common Oak
Kingdom same	Plantae (植物)	Plantae (植物)
Phylum same	Magnoliophyta (木兰植物门)	Magnoliophyta (木兰植物门)
Class same	Magnoliopsida (木兰纲)	Magnoliopsida (木兰纲)
Order same	Fagales (壳斗目)	Fagales (壳斗目)
Family same	Fagaceae (Beech Family)	Fagaceae (Beech Family)
Genus same	Quercus (Oaks)	Quercus (Oaks)
Species	Quercus gravesii	Quercus robur

Evolutionary Relationship

Chisos Red Oak and Common Oak share a common ancestor at the Genus level: Quercus. (Oaks)

Conservation Status

Chisos Red Oak

LC — Least Concern

Common Oak

LC — Least Concern

Trend: Stable →

Physical Characteristics

Attribute	Chisos Red Oak	Common Oak
Diet	—	Autotroph
Average Lifespan	—	1000 years
Average Length	—	25.0 m
Average Weight	—	—

Habitat & Geographic Range

Chisos Red Oak

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Common Oak

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Widely distributed across Africa (Lesotho, South Africa), Asia (Armenia, India), Europe (8 countries), North America (Canada, United States), Oceania and the Pacific (Australia, New Zealand), and South America (4 countries).

Chisos Red Oak

The Chisos Red Oak (Quercus gravesii) is a medium-sized deciduous oak native to the mountain ranges of the Trans-Pecos region of Texas and extending into adjacent areas of northeastern Mexico, including the Sierra Madre Oriental foothills. It belongs to the red oak group (section Lobatae) within the family Fagaceae, characterised by leaves with lobes ending in bristle tips and acorns that take two seasons to ripen. Quercus gravesii typically grows on rocky slopes and canyon walls at mid to high elevations, forming part of diverse Madrean woodland and pinyon-juniper communities alongside other oaks, junipers, and conifers. Its foliage turns red and orange in autumn, providing a striking display in the typically muted desert mountain landscape. The species is an important component of its ecosystem, providing food and habitat for numerous birds and mammals; acorns are consumed by jays, woodpeckers, deer, and small rodents. Hypnotic hybridisation with related oak species is documented in areas of sympatry. The IUCN classifies Chisos Red Oak as Least Concern, with populations considered stable across its range. It is well represented within protected areas including Big Bend National Park and the Davis Mountains. Threats are limited but include drought stress exacerbated by climate change and browsing pressure from white-tailed deer.

Common Oak

英国栎（Quercus robur）是欧洲最重要、分布最广的落叶乔木之一，寿命可逾千年，高达40米，所支撑的生物多样性超过欧洲任何其他树种，超过2300种昆虫、真菌、地衣、苔藓和鸟类直接依赖成熟栎树为生。分布于欧洲全境至西亚的温带森林，其坚硬耐久的木材在历史上是造船、建筑和制桶的基础材料。