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 douglasii Lindley (allopolyploid) containing 15 media.

Crataegus subg. Sanguineae Ufimov sect. Douglasianae (Rehder) C.K. Schneid. ser. Douglasianae Rehder; Crataegus douglasii individuals shown to be predominantly tetraploid by flow cytometry (Talent & Dickinson 2005).

Folio Media

M430623
Crataegus douglasii Lindl.
Entire leaf
M430624
Crataegus douglasii Lindl.
Entire leaf
M430625
Crataegus douglasii Lindl.
Entire leaf
M430626
Crataegus douglasii Lindl.
Entire leaf
M430627
Crataegus douglasii Lindl.
Entire leaf
M430628
Crataegus douglasii Lindl.
Entire leaf
M430629
Crataegus douglasii Lindl.
Entire leaf
M430630
Crataegus douglasii Lindl.
Entire leaf
M430631
Crataegus douglasii Lindl.
Entire leaf
M430632
Crataegus douglasii Lindl.
Entire leaf
M430633
Crataegus douglasii Lindl.
Entire leaf
M430634
Crataegus douglasii Lindl.
Entire leaf
M430656
Crataegus douglasii Lindl.
Entire leaf
M430657
Crataegus douglasii Lindl.
Entire leaf
M430658
Crataegus douglasii Lindl.
Entire leaf