Author | Ashe | |
Distribution | Of uncertain occurrence in the state, though Weakley (2018) indicates it of rare presence in the Mountains, and Lance’s (2014) range map shows the southern edge of the range seeming to clip the northwestern corner of the state. Lance also states it as being "rare" in NC (on page 74) in his book. Sadly, the county map below must remain unpopulated until the editors can locate specific counties of occurrence.
NatureServe Explorer shows the range to include NY west to IA and south to NC and TN. This is a taxon of apparent hybrid origin and thus it is poorly known and not well studied.
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Abundance | If it occurs in the state at all, it is assumed to be very rare and limited to the northern Mountains. It probably should be at least Watch List, if not Significantly Rare, but currently it has no state status; the website editors suggest W3 -- rare but poorly documented. This website has tentatively assigned a state rank of S1?, though in reality and to be conservative the rank possibly should be SR (State Reported). | |
Habitat | Weakley (2018) states: “Upland forests, pastures, brushy hillsides”. | |
Phenology | Blooms in May, and fruits in September and October. | |
Identification | This is a large shrub or small tree, to about 15-20 feet tall. It is presumed to be of hybrid origin between C. crus-galli and probably C. punctata; the characters seem to be intermediate between these. The leaves are obovate to elliptic and only scarcely serrated on the margins. This taxon will need to be keyed out very carefully, and thus refer to Weakley (2018) for details on its separation from other hawthorns. | |
Taxonomic Comments | Interestingly, Lance (2014) names this taxon as Crataegus x disperma, as this is often the way that presumed hybrids are written and named. Weakley (2018) and NatureServe show it as C. disperma, though acknowledging it as of hybrid origin. However, in 2022, Weakley returned the taxon back to putative hybrid status, as Crataegus x disperma. This taxon was not mentioned in RAB (1968).
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Other Common Name(s) | Two-seed Hawthorn (which is the literal translation of the scientific name) | |
State Rank | HYB | |
Global Rank | G4G5 | |
State Status | [W3] | |
US Status | | |
USACE-agcp | | |
USACE-emp | | |