Breeding systems of northeastern North American Spiranthes (Orchidaceae)

@article{Catling1982BreedingSO,
  title={Breeding systems of northeastern North American Spiranthes (Orchidaceae)},
  author={Paul M. Catling},
  journal={Botany},
  year={1982},
  volume={60},
  pages={3017-3039}
}
Breeding systems in northeastern North American Spiranthes orchids were studied to provide background information for taxonomic and evolutionary interpretations. Pollination experiments revealed that Spiranthes casei var. casei, S. cernua var. cernua, S. magnicamporum (southwestern Ontario), and S. ochroleuca (southern Nova Scotia) are agamospermic, while S. lacera var. lacera, S. lacera var. gracilis, S. laciniata, S. magnicamporum (Illinois), S. ochroleuca (Pennsylvania, New York), S… 
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