Crataegus delawarensis

Crataegus delawarensis

Possibly Extinct  (NatureServe)[1]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Rosales
Family: Rosaceae
Genus: Crataegus
Section: Crataegus sect. Coccineae
Series: Crataegus ser. Populneae
Species:
C. delawarensis
Binomial name
Crataegus delawarensis
Synonyms[2]
  • Crataegus pruinosa var. delawarensis (Sarg.) E.J.Palmer

Crataegus delawarensis, commonly known as the Delaware hawthorn[3] was a hawthorn species endemic to northern Delaware.[4] Crataegus delawarensis can be differentiated from other members of its series by its narrower leaf blades and yellow anthers.[4] It was a tree-like shrub that could grow up to 30 ft. in height.[3] There is only one known occurrence between Newport and New Castle, Delaware. Despite searches, Crataegus delawarensis has not been seen since 1903.[1] Due to its limited range and intermediate characteristics, Crataegus delawarensis is assumed to have been of hybrid orgin between Crataegus pruinosa and C. populnea.[5]

References

  1. ^ a b NatureServe. "Crataegus delawarensis". NatureServe Explorer. Arlington, Virginia. Retrieved 17 July 2025.
  2. ^ "Crataegus delawarensis". Plants of the World Online. Royal Botanic Gardens. Retrieved 17 July 2025.
  3. ^ a b "Hidden Treasures: Learn About Rare Plants in Delaware". Delaware.gov. Retrieved 17 July 2025.
  4. ^ a b Phipps, J.B. "Crataegus delawarensis". Flora of North America North of Mexico. New York, Oxford: Oxford University Press. p. 568. Retrieved 17 July 2025.
  5. ^ "Crataegus delawarensis". Flora of the Southeastern United States. Retrieved 17 July 2025.
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