Ostrya chisosensis

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.[3]

Big Bend hop-hornbeam

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[1][2]
  • Ostrya knowltonii subsp. chisosensis (Correll) A.E. Murray
  • Ostrya knowltonii var. chisosensis (Correll) A.E. Murray

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.[3][4][5][6]

References
  1. Tropicos
  2. The Plant List
  3. Flora of North America vol 3
  4. Correll, Donovan Stewart. 1965. Some additions and corrections to the flora of Texas. Wrightia 3(7): 126-140.
  5. Murray, Albert Edward. 1983. Kalmia 13: 10.
  6. 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.
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