| Big Bend hop-hornbeam | |
|---|---|
| Conservation status | |
 Critically Endangered (IUCN 3.1) | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fagales |
| Family: | Betulaceae |
| Genus: | Ostrya |
| Species: | O. chisosensis |
| Binomial name | |
| Ostrya chisosensis Correll | |
| Synonyms | |
| |
Ostrya chisosensis, common name Big Bend hop-hornbeam or Chisos hop-hornbeam, is a plant species endemic to Texas. It is known only from the Chisos Mountains inside Big Bend National Park, in Brewster County, although related populations in northern Chihuahua have not been studied in detail and may be the same species. It grows along streambanks and on the walls of canyons.
Ostrya chisosensis is a tree up to 12 m tall. Bark splits into narrow vertical strips. Leaves broadly elliptic to lanceolate, lacking glandular hairs. Staminate (male) catkins are 3.5–5 cm long.
References
- Tropicos
- The Plant List
- ^ Flora of North America vol 3
- Correll, Donovan Stewart. 1965. Some additions and corrections to the flora of Texas. Wrightia 3(7): 126-140.
- Murray, Albert Edward. 1983. Kalmia 13: 10.
- Correll, D. S. & M. C. Johnston. 1970. Manual of the Vascular Plants of Texas i–xv, 1–1881. The University of Texas at Dallas, Richardson.