The Gymnosperms

@article{Chamberlain2008TheG,
  title={The Gymnosperms},
  author={Charles Joseph Chamberlain},
  journal={The Botanical Review},
  year={2008},
  volume={1},
  pages={183-209}
}
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Complex reproductive secretions occur in all extant gymnosperm lineages: a proteomic survey of gymnosperm pollination drops
TLDR
It is demonstrated that all extant gymnosperm groups produce complex reproductive secretions containing proteins, an ancient trait that likely contributed to the evolutionary success of seed plants.
Best in the company of nearby males: female success in the threatened cycad, Zamia portoricensis
TLDR
The possible mate-finding Allee effect indicates that pollinator movement among plants may be limited for this mutually dependent plant-pollinator interaction, and being close to male plants is a matter of chance.

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