Project 2523: T. A. Dickinson, B. X. Yan, S. Han, M. Zarrei. 2021. Niche Shifts, Hybridization, Polyploidy and Geographic Parthenogenesis in Western North American Hawthorns (Crataegus subg. Sanguineae, Rosaceae). Agronomy. 11 (11):2133.
Viewing Crataegus macracantha Lodd. ex Loud. (tetraploid) containing 6 media.

Crataegus subg. Americanae El Gazzar sect. Macracanthae Loudon ser. Macracanthae (Loudon) Rehder; Crataegus macracantha individuals shown to be tetraploid by flow cytometry (Talent & Dickinson 2005).

Folio Media

M430617
Crataegus macracantha Lodd. ex L...
Entire leaf
M430618
Crataegus macracantha Lodd. ex L...
Entire leaf
M430619
Crataegus macracantha Lodd. ex L...
Entire leaf
M430659
Crataegus macracantha Lodd. ex L...
Entire leaf
M430660
Crataegus macracantha Lodd. ex L...
Entire leaf
M430661
Crataegus macracantha Lodd. ex L...
Entire leaf