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.

Specimen: Crataegus suksdorfii (diploid) (Sarg.) Kruschke (ROM/TRT00001806:TRT)
View: Entire leaf
View: Entire leaf
Abstract
In Crataegus series Douglasianae vein density and other architectural features of foliage leaves vary in manners suggesting different degrees of adaptation to xeric conditions, notably the risk of xylem cavitation and embolism. We document variation in leaf venation in sexual diploids and allopolyploids in which gametophytic self-incompatibility, pseudogamous gametophytic apomixis, and hybridization have apparently also played roles in determining the extents of the geographic ranges of these taxa.Read the article »
Article DOI: 10.3390/agronomy11112133
Project DOI: 10.7934/P2523, http://dx.doi.org/10.7934/P2523
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MorphoBank Project 2523
MorphoBank Project 2523
- Creation Date:
27 August 2016 - Publication Date:
11 October 2021 - Project views: 18720
Authors' Institutions
- University of Toronto
- Royal Ontario Museum
- The Hospital for Sick Children, Toronto
Members
member name | taxa ![]() |
specimens ![]() |
media ![]() |
Tim Dickinson Project Administrator | 0 | 0 | 0 |
Madeleine Milne Full membership ![]() | 0 | 0 | 0 |
Susan Yan Observer ![]() | 5 | 17 | 51 |
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Project views 
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Total project views | 18720 | |
Project overview | 619 | |
Bibliography | 986 | |
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Taxon list | 483 | |
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Specimen list | 3087 | |
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Folio views | 1452 | Folio list (315 views); Crataegus suksdorfii (Sarg.) Kruschke (diploid ) (242 views); Crataegus suksdorfii (Sarg.) Kruschke (allopolyploid ) (239 views); Crataegus douglasii Lindley (allopolyploid) (224 views); Crataegus chrysocarpa Ashe (tetraploid) (212 views); Crataegus macracantha Lodd. ex Loud. (tetraploid) (220 views); |
Project downloads 
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 38 | |
Project downloads | 37 | |
Document downloads | 1 | Leaf venation in Pacific Northwest hawthorns (P2523) (1 download); |