Chisos Mountains Oak vs Common corncockle

Quercus tardifolia compared with Agrostemma githago

Key Differences

• Chisos Mountains Oak is Data Deficient while Common corncockle is Critically Endangered.

Taxonomic Classification

Rank	Chisos Mountains Oak	Common corncockle
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order	Fagales (Beeches & Oaks)	Caryophyllales (Caryophyllales)
Family	Fagaceae (Beech Family)	Caryophyllaceae
Genus	Quercus (Oaks)	Agrostemma
Species	Quercus tardifolia	Agrostemma githago

Evolutionary Relationship

Chisos Mountains Oak and Common corncockle share a common ancestor at the Class level: Magnoliopsida. (Dicots)

Conservation Status

Chisos Mountains Oak

DD — Data Deficient

Common corncockle

CR — Critically Endangered

Physical Characteristics

Attribute	Chisos Mountains Oak	Common corncockle
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Chisos Mountains Oak

Habitat

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

Common corncockle

Habitat

Found across multiple habitat types including montane grasslands and shrublands, tropical and subtropical moist broadleaf forests, and temperate coniferous forests, among 13 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Lesotho), Asia (7 countries), Europe (24 countries), North America (Canada, Mexico, United States), Oceania and the Pacific (Australia), and South America (Brazil, Chile). Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Chisos Mountains Oak

The Chisos Mountains Oak (Quercus tardifolia) is a rare deciduous oak endemic to the Chisos Mountains of Big Bend National Park in Trans-Pecos Texas, USA. Belonging to the red oak group (section Lobatae) within the family Fagaceae, it is one of the most geographically restricted oaks in North America, known from only a very small area within the high-elevation woodland zones of the park. The species grows at elevations roughly between 1,800 and 2,400 metres, where it occurs in mixed woodland communities alongside other oaks, junipers, and pines. Like other red oaks, its acorns require two years to mature, and the leaves typically display the deep sinuses and bristle-tipped lobes characteristic of the section. The IUCN currently classifies Quercus tardifolia as Data Deficient, reflecting uncertainty about its precise population size, the extent of hybridisation with related oak species, and the degree to which apparent stands represent genetically distinct individuals versus hybrids. Climate change poses a significant long-term threat to this mountain-island endemic, as rising temperatures could compress or eliminate the cooler, moister habitat on which it depends. Conservation efforts focus on accurate taxonomic assessment, population monitoring within Big Bend National Park, and seed banking to preserve genetic diversity.

Common corncockle

<em>Agrostemma githago</em>, commonly known as common corncockle, is an annual flowering plant in the family Caryophyllaceae. Once a widespread weed of cereal crops across Europe, Asia, and beyond, this species is now Critically Endangered on the IUCN Red List due to the dramatic decline caused by modern agricultural practices, particularly improved grain cleaning and herbicide use. Corncockle is a tall, slender plant covered in silky white hairs, bearing large, solitary pink to purple flowers with distinctive dark veining. Its seeds contain toxic saponin compounds called githagins, which historically contaminated grain supplies. The species now survives primarily in wildflower conservation areas, seed banks, and traditional farmland conservation schemes. It typically grows in open, disturbed arable soils with full sun exposure. Biological traits of this species remain poorly documented in the scientific literature.