Crataegus in the northeastern and central United States and adjacent Canada
@article{Palmer2008CrataegusIT, title={Crataegus in the northeastern and central United States and adjacent Canada}, author={Ernest Jesse Palmer}, journal={Brittonia}, year={2008}, volume={5}, pages={471-490} }
In the preparation of a revised treatment of the genus Crcataegus in the northeastern United States and adjacent Canada, to be published soon, it has been found necessary to propose a new specific name to replace one invalidated by all earlier homonym and to change the status of a number of names from species to varieties or forms. And in treating the species under a broader concept than that of the original authors, many names are placed in synonymy. This more conservative treatment of the…
4 Citations
On the Origin of the Field Plants of the Northeastern United States
- Environmental ScienceThe American Naturalist
- 1983
Old fields have dominated studies of terrestrial plant succession in the eastern United States. In spite of the tremendous amount of work on old field succession, fundamental questions remain. One…
Cytological, morphological, ecological and phenological support for specific status of Crataegus suksdorfii (Rosaceae).
- Environmental Science
- 1990
Evidence is presented that the 20-stamen form of Crataegus suksdorfii is diploid whereas C. douglasii is tetraploid, and that the two differ substantially in morphology, ecology and phenology.
New alignments in North American Crataegus (Rosaceae)
- Biology
- 2011
New combinations are made for 30 southeastern USA Crataegus entities. The following varieties are designated: C. allegheniensis Beadle var. extraria, C. allegheniensis var. ignava, C. allegheniensis…
Polyploidy, reproductive biology, and Rosaceae: understanding evolution and making classifications
- BiologyPlant Systematics and Evolution
- 2007
It appears that hybridization, pseudogamous gametophytic apomixis, polyploidy, and self-compatibility are closely linked in Rosaceous genera Pyreae.