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Crataegus ×notha Sargent (pro sp.). Mongrel Hawthorn. Phen: Apr; Sep-Oct. Hab: Gravelly hills in oak woodlands. Dist: Endemic to Hempstead County, AR; no collections since 1921 suggest this entity may be extinct.

Origin/Endemic status: Endemic

Taxonomy Comments: Originally described as an assumed interserial hybrid of C. marshallii Eggleston and a member of series Molles, possibly the locally sympatric C. brachyphylla Sargent.

Synonymy ⓘ: = Phipps, O’Kennon, & Lance (2003); = n/a – FNA9

Links to other floras: = n/a - FNA9

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