Gynostemium structure and relationships of theCorallorhizinae (Orchidaceae: Epidendroideae)

@article{Freudenstein2004GynostemiumSA,
  title={Gynostemium structure and relationships of theCorallorhizinae (Orchidaceae: Epidendroideae)},
  author={John V Freudenstein},
  journal={Plant Systematics and Evolution},
  year={2004},
  volume={193},
  pages={1-19}
}
  • J. Freudenstein
  • Published 1 March 1994
  • Biology
  • Plant Systematics and Evolution
Several types of pollinium stalk are present in theCorallorhizinae. Govenia has a cellular epidermal pollinium stalk, whileTipularia has a unique stipe that results from prolongation and detachment of the rostellum.Dactylostalix andEphippianthus have no stipe, but do have a detachable viscidium.Aplectrum, Corallorhiza, Cremastra, andOreorchis have hamuli. Cladistic analysis of morphological characters suggests that these four genera form a “core”Corallorhizinae, and are sister group to a clade… 
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Abstract Cremastra malipoensis G. W. Hu, a new rare species of Orchidaceae, is described and illustrated, and a taxonomic key to the species of the genus is provided. It occurs in southeastern
The structure and function of orchid pollinaria
TLDR
Pollinaria ensure that large pollen loads are deposited on the stigma, thus enabling the fertilization of the large numbers of ovules in the flowers of Orchidaceae, and ensure efficient removal from the anther, minimal pollen wastage during transit, and a high probability of deposition on conspecific stigmas.
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