Geum × catlingii
Geum × catlingii, or Catling's avens, is a plant in the rose family, Rosaceae. It is known from eastern Canada, where it arises from natural hybridization between the native G. canadense Jacq. and the introduced G. urbanum L.[1][2] It is named after Paul M. Catling, the botanist who first observed the hybrid.
Geum ×catlingii (centre), with parents G. canadense (top right), and G. urbanum (bottom centre)
| Catling's avens | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Rosales |
| Family: | Rosaceae |
| Genus: | Geum |
| Species: | G. × catlingii |
| Binomial name | |
| Geum × catlingii J.-P. Bernard & R. Gauthier | |
Description
Geum ×catlingii is a hybrid taxon, and as such exhibits variable morphology. However, several characters in combination help distinguish it from other Geum species:[1]
- Hybrid vigor - hybrids tend to be larger than parents
- Petals are creamy-yellow - intermediate between dark yellow (G. urbanum) and white (G. canadense).
- Intermediate stem bract size
- Highly sterile ovaries
It has been noted to bloom throughout the summer, after other species have shed their petals.[3]
References
- Bernard, J.-P.; Gauthier, R. (1986). "Observations sur le Geum urbanum L. dans la région de Québec et description de deux hybrides" (PDF). Naturaliste Canadien. 113 (4): 317–324.
- Brouillet, L.; Coursol, F.; Meades, S.J.; Favreau, M.; Anions, M.; Bélisle, P.; Desmet, P. (2010). "VASCAN, the Database of Vascular Plants of Canada". Retrieved 2018-01-12.
- Rothfels, C.J. (2005). "Significant 2004 Hamilton Study Area Plant Records from the Royal Botanical Gardens Herbarium (HAM)" (PDF). The Wood Duck. 58 (9): 219–223.
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