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]

gollark: Ah yes, a natural 19.
gollark: ++roll d20
gollark: Okay, fine, rerunning.
gollark: Too bad.
gollark: ++roll d20

References
  1. 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.
  2. 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.
  3. 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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